MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'Magma' source. Mon, 06 Feb 2012 03:25:56 +0100 http://www.medworm.com/index.php?rid=5646439&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22286777%26dopt%3DAbstract CONCLUSION: We describe here a successful strategy to minimize spectral pattern changes in mouse Gbm samples using a FMW irradiation system. PMID: 22286777 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5646439 Sun, 29 Jan 2012 05:00:00 +0100 5646439 http://www.medworm.com/index.php?rid=5612012&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22246289%26dopt%3DAbstract CONCLUSION: We have shown that in healthy volunteers, ASL parameters are repeatable over a short and long period. This supports the overall aim of using ASL in the clinic to assess longitudinal renal perfusion changes in patients. PMID: 22246289 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5612012 Fri, 13 Jan 2012 05:00:00 +0100 5612012 http://www.medworm.com/index.php?rid=5612011&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22246290%26dopt%3DAbstract CONCLUSION: The most significant potential advantage of AIRASL is its high SNR, which takes advantage of the qualities of 3.0 T. This sequence can be easily applied in the clinical setting and will enable ASL to become more relevant for clinical application. PMID: 22246290 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5612011 Fri, 13 Jan 2012 05:00:00 +0100 5612011 http://www.medworm.com/index.php?rid=5588476&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22231782%26dopt%3DAbstract CONCLUSIONS: Randomly encoded VEASL provides data that allows for blind detection of source vessels. This method simplifies the VEASL prescription process and allows for efficient detection of atypical or collateral circulation. PMID: 22231782 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5588476 Tue, 10 Jan 2012 05:00:00 +0100 5588476 http://www.medworm.com/index.php?rid=5571710&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22219020%26dopt%3DAbstract Authors: Turner R, Streicher M Abstract The Larmor frequency of water protons has reliably linear temperature dependence. Since this frequency shift is easily measurable using relatively simple MRI techniques, a remarkable opportunity arises for uniquely non-invasive and accurate temperature evaluation, deep within any water-containing object. Major applications are appearing in the field of image-guided surgery. The cutting-edge papers collected in this Special Issue demonstrate both the versatility and the power of MRI thermometry. PMID: 22219020 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5571710 Fri, 06 Jan 2012 05:00:00 +0100 5571710 http://www.medworm.com/index.php?rid=5556781&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22203428%26dopt%3DAbstract CONCLUSIONS: The MT effect associated with the Q2TIPS pulse train has a significant effect on tissue signal. It is recommended that MT effects are characterised and both background suppression and Q2TIPS schemes are accordingly optimised to reduce the effects of MT on accuracy and precision of CBF estimation. PMID: 22203428 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5556781 Wed, 28 Dec 2011 05:00:00 +0100 5556781 http://www.medworm.com/index.php?rid=5556782&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22200964%26dopt%3DAbstract CONCLUSION: Despite decreased B1 efficiency, sufficient labeling efficiency can be achieved for whole-brain pCASL at 7 T with high-permittivity pads. However, image quality is still limited compared with 3 T, probably due to imaging instabilities, and further research is needed to elucidate this. PMID: 22200964 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5556782 Tue, 27 Dec 2011 05:00:00 +0100 5556782 http://www.medworm.com/index.php?rid=5521393&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22167383%26dopt%3DAbstract CONCLUSION: Using a validated FLASH sequence, one can reduce slice resolution to 75% and allow asymmetric echo without sacrificing precision, in order to reduce the total acquisition time. However, in longitudinal studies, the scanner and the specific sequence implementation should be kept constant between baseline and follow-up, in order to avoid systematic off-sets in the measurements. PMID: 22167383 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5521393 Wed, 14 Dec 2011 05:00:00 +0100 5521393 http://www.medworm.com/index.php?rid=5502412&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22120687%26dopt%3DAbstract CONCLUSION: dreMR imaging has been extended by a method to quantify contrast agent concentrations and improved for field-cycling with finite ramp times. Robust localization of contrast agents using dreMR imaging has been performed in a sample where conventional imaging delivers inconclusive results. PMID: 22120687 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5502412 Sun, 27 Nov 2011 05:00:00 +0100 5502412 http://www.medworm.com/index.php?rid=5502426&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22113517%26dopt%3DAbstract CONCLUSIONS: The CHARMED model was used to understand whether and where DKI contrast can be explained in terms of the underlying axonal geometry. This work demonstrates that the information contained in DKI overlaps with the information extracted by CHARMED in areas of higher intra-voxel directional coherence. PMID: 22113517 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5502426 Thu, 24 Nov 2011 05:00:00 +0100 5502426 http://www.medworm.com/index.php?rid=5502425&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22113518%26dopt%3DAbstract CONCLUSION: pASL is a suitable method for examining rapid, dynamic effects of opioid administration on brain physiology. PMID: 22113518 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5502425 Thu, 24 Nov 2011 05:00:00 +0100 5502425 http://www.medworm.com/index.php?rid=5502424&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22113519%26dopt%3DAbstract CONCLUSION: This study presents the accurate diffusion parameters by the use of very large b-values along with Rician noise correction and multi-component data analysis. The experimental results are consistent with the theoretical predictions used to estimate the exchange time of diffusing water molecules for a model of human brain tissue. PMID: 22113519 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5502424 Thu, 24 Nov 2011 05:00:00 +0100 5502424 http://www.medworm.com/index.php?rid=5430706&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22086306%26dopt%3DAbstract CONCLUSION : The feasibility of computationally intensive exploratory analyses allows broader access to the tools for discovery science. PMID: 22086306 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5430706 Wed, 16 Nov 2011 05:00:00 +0100 5430706 http://www.medworm.com/index.php?rid=5430705&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22086307%26dopt%3DAbstract CONCLUSIONS: Our results indicate that training causes a decrease of the three eigenvalues and ADC, which we hypothesize is due to an increase of density of myofilaments in the intracellular space, and deformation of the cell induced by enlargement of extracellular components. PMID: 22086307 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5430705 Wed, 16 Nov 2011 05:00:00 +0100 5430705 http://www.medworm.com/index.php?rid=5430709&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22071580%26dopt%3DAbstract CONCLUSION: This study reported blood T (1) and T (2) measurements at 11.7 T for the first time. These blood relaxation data could have implications in numerous functional and physiological MRI studies at 11.7 T. PMID: 22071580 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5430709 Thu, 10 Nov 2011 05:00:00 +0100 5430709 http://www.medworm.com/index.php?rid=5430708&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22071581%26dopt%3DAbstract CONCLUSION: The collagen orientation in nasal cartilage can influence T(2) and T(1ρ) MRI of cartilage. Without Gd, T(1ρ) was sensitive to the proteoglycan content and its sensitivity was nearly constant regardless of fibril orientation. In comparison, the T(2) sensitivity to proteoglycan was dependant upon fibril orientation, i.e., more sensitive at 55° than 0°. When Gd ions were present, both T(2) and T(1ρ) became insensitive to the proteoglycan content. PMID: 22071581 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5430708 Thu, 10 Nov 2011 05:00:00 +0100 5430708 http://www.medworm.com/index.php?rid=5430707&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22071582%26dopt%3DAbstract CONCLUSION: It is believed that the proposed phase error correction scheme can improve the EPI performance in high field MRIs with higher magnetic field inhomogeneities. PMID: 22071582 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5430707 Thu, 10 Nov 2011 05:00:00 +0100 5430707 http://www.medworm.com/index.php?rid=5364800&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22042538%26dopt%3DAbstract CONCLUSIONS: Experimental studies in small rodents requiring high spatial resolution can be performed by using a clinical 3 T scanner with appropriate dedicated coils. PMID: 22042538 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5364800 Sat, 22 Oct 2011 04:00:00 +0100 5364800 http://www.medworm.com/index.php?rid=5354038&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22009130%26dopt%3DAbstract CONCLUSION: A region of interest analysis revealed that the lateralization of amygdala responses depended on the PE polarity thus representing a pure method artifact. Alternating PE with multi-echo EPI reduced the artifact. Lateralized fMRI activation in areas with magnetic field inhomogeneities need to be interpreted with caution. PMID: 22009130 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5354038 Wed, 19 Oct 2011 04:00:00 +0100 5354038 http://www.medworm.com/index.php?rid=5354037&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D22009131%26dopt%3DAbstract CONCLUSION: Successful background suppression over a broad range of tissues is achievable. Values for optimal pulse timing in both pulsed and continuous ASL studies are reported to facilitate sequence design with different labeling parameters. PMID: 22009131 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5354037 Wed, 19 Oct 2011 04:00:00 +0100 5354037 http://www.medworm.com/index.php?rid=5322091&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21998883%26dopt%3DAbstract Authors: PMID: 21998883 [PubMed - indexed for MEDLINE] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5322091 Sat, 01 Oct 2011 04:00:00 +0100 5322091 http://www.medworm.com/index.php?rid=5236378&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21928061%26dopt%3DAbstract CONCLUSION : Our automatic method provides reliable morphometric evaluation of the SV. Measures of distances between relevant points allow a precise evaluation of each cusp of the SV. This robust evaluation can be helpful in the follow-up of patients with aortic root diseases. PMID: 21928061 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5236378 Sun, 18 Sep 2011 04:00:00 +0100 5236378 http://www.medworm.com/index.php?rid=5236372&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21928062%26dopt%3DAbstract CONCLUSION: This work introduces a novel method for the determination of the total circulating blood volume using magnetic resonance contrast agents as tracers. PMID: 21928062 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5236372 Sun, 18 Sep 2011 04:00:00 +0100 5236372 http://www.medworm.com/index.php?rid=5236385&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21922191%26dopt%3DAbstract CONCLUSION: Parallel transmission can become an important tool to control and manage the local SAR in the human body. The practical use of local SAR constraints is feasible with consistent results for a variety of body models. PMID: 21922191 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5236385 Fri, 16 Sep 2011 04:00:00 +0100 5236385 http://www.medworm.com/index.php?rid=5223855&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21909791%26dopt%3DAbstract CONCLUSION: The use of in vivo MRS in breast cancer diagnosis and treatment monitoring should bring supplementary information to the standard MR imaging protocol. With the currently observed low choline detection rate, this is not the case, and technological challenges related to choline detection have to be resolved. PMID: 21909791 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5223855 Sat, 10 Sep 2011 04:00:00 +0100 5223855 http://www.medworm.com/index.php?rid=5207649&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21892733%26dopt%3DAbstract CONCLUSION: This tool permits one to find exposure level for specific worker walking path and speed; it can be used as assessment tool in any MRI centre and for workers safety education. It is valid for any kind of commercial scanner because it requires only the knowledge of the MR scanner room map with isogauss lines. PMID: 21892733 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5207649 Sun, 04 Sep 2011 04:00:00 +0100 5207649 http://www.medworm.com/index.php?rid=5207634&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21892734%26dopt%3DAbstract CONCLUSION: The short-TR approach allows for an improved SNR efficiency of lipids and for fast T2 relaxometry of hepatic water and fat, with a detailed coverage of the T2 relaxation decay curve, within a single breath-hold experiment. PMID: 21892734 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5207634 Sun, 04 Sep 2011 04:00:00 +0100 5207634 http://www.medworm.com/index.php?rid=5207633&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21898135%26dopt%3DAbstract CONCLUSION: By implementing on-line the post processing algorithm, PRFS MRT may be used as a safety tool for non-invasive and accurate monitoring of near-zero temperatures during MR-guided clinical cryotherapy. PMID: 21898135 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5207633 Sun, 04 Sep 2011 04:00:00 +0100 5207633 http://www.medworm.com/index.php?rid=5169371&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21863374%26dopt%3DAbstract CONCLUSION: Both FEAST and LL-ASL provide transit time information in clinically acceptable scan times. Bipolar gradients can be used to tailor transit time estimates for different experimental and clinical situations. PMID: 21863374 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5169371 Tue, 23 Aug 2011 23:00:00 +0100 5169371 http://www.medworm.com/index.php?rid=5127047&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21833790%26dopt%3DAbstract CONCLUSION: Combination of partial k-space sampling and parallel image acquisition allows for further acceleration of data acquisition as compared to each method alone. Image reconstruction from undersampled data sets using the AI_SENSE algorithm was found to considerably reduce reconstruction errors and artifacts observed for HM_SENSE reconstruction caused by errors in phase estimation. PMID: 21833790 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5127047 Wed, 10 Aug 2011 23:00:00 +0100 5127047 http://www.medworm.com/index.php?rid=5127049&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21814756%26dopt%3DAbstract CONCLUSION: The proposed EPI-PSF-based distortion correction improves correction of EPI and accelerates PSF reference data acquisition and computation. PMID: 21814756 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5127049 Wed, 03 Aug 2011 23:00:00 +0100 5127049 http://www.medworm.com/index.php?rid=5127048&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21814757%26dopt%3DAbstract CONCLUSION: Compared to a conventional surface coil, the stripline coil is easy to manufacture, requires shorter set-up times and shows reduced dielectric interaction with conductive samples. PMID: 21814757 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5127048 Wed, 03 Aug 2011 23:00:00 +0100 5127048 http://www.medworm.com/index.php?rid=5078921&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21800192%26dopt%3DAbstract CONCLUSION: Ultrafast thermometry via phase or frequency monitoring along single columns was demonstrated. With a temporal resolution around 50 ms, it may be possible to monitor focal heating produced by short ultrasound pulses. PMID: 21800192 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5078921 Thu, 28 Jul 2011 23:00:00 +0100 5078921 http://www.medworm.com/index.php?rid=5078922&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21786163%26dopt%3DAbstract CONCLUSION: ASL perfusion imaging provides lung perfusion assessment in young CF patients. This non-invasive functional imaging technique is worth being evaluated in the clinical monitoring of CF patients. PMID: 21786163 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5078922 Sat, 23 Jul 2011 23:00:00 +0100 5078922 http://www.medworm.com/index.php?rid=5029633&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21755466%26dopt%3DAbstract CONCLUSION: The findings in this work indicate that both translations and rotations in the vicinity of an MR system should be taken into account, and that a single regulatory action level might not be sufficient. PMID: 21755466 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5029633 Wed, 13 Jul 2011 23:00:00 +0100 5029633 http://www.medworm.com/index.php?rid=5029634&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21744232%26dopt%3DAbstract CONCLUSION: Significant correlation was found between the results of histology and 1H MRS measurement of liver fat content. The method is suitable for non-invasive repetitive examination of liver fat in liver-transplants patients between protocol biopsies and for the screening of steatosis in other liver diseases. PMID: 21744232 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=5029634 Sat, 09 Jul 2011 23:00:00 +0100 5029634 http://www.medworm.com/index.php?rid=4984958&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21710328%26dopt%3DAbstract CONCLUSION: The evaluation of cluster reproducibility could improve our knowledge of IED-related BOLD response. Moreover, it could enhance the reliability of cEEG-fMRI to identify the irritative zone in focal epileptic patients. PMID: 21710328 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4984958 Mon, 27 Jun 2011 23:00:00 +0100 4984958 http://www.medworm.com/index.php?rid=4932322&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21671093%26dopt%3DAbstract CONCLUSION: Infarct thinning and-to a lesser extent-IE reduction, contribute to infarct shrinkage in the time course of infarct healing. Infarct thinning may occur without infarct expansion. PMID: 21671093 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4932322 Mon, 13 Jun 2011 23:00:00 +0100 4932322 http://www.medworm.com/index.php?rid=4932323&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21656191%26dopt%3DAbstract CONCLUSION : We found that coagulation size correlated positively with temperature. There was a clear trend towards the correlation of time over 44°C and ablation depth. Maximum temperatures did not significantly correlate with coagulation size. Laser ablation of lung tumors using the IHLP (isolated human lung perfusion) model represents a possible method for evaluating ex vivo the interrelationships of temperature, time of temperature exposure, and resulting coagulation. PMID: 21656191 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4932323 Wed, 08 Jun 2011 23:00:00 +0100 4932323 http://www.medworm.com/index.php?rid=4885579&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21630094%26dopt%3DAbstract CONCLUSIONS: Correlating ADC and FA with proteoglycan and collagen content suggests that diffusion is dominated by different depth-dependent mechanisms within cartilage. Knowledge of the spatial distribution of the DTI parameters and their variation contributes to form a database for future analysis of defective cartilage. PMID: 21630094 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4885579 Tue, 31 May 2011 23:00:00 +0100 4885579 http://www.medworm.com/index.php?rid=4885587&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21626278%26dopt%3DAbstract CONCLUSION: Phase-based AIFs are a feasible alternative to magnitude AIFs, but sources of errors exist, making quantification difficult, especially of the AIF tail. Improvement of the technique is feasible and also required for the phase-based AIF approach to reach its full potential. PMID: 21626278 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4885587 Sat, 28 May 2011 23:00:00 +0100 4885587 http://www.medworm.com/index.php?rid=4885601&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21614599%26dopt%3DAbstract CONCLUSION: Some consistent metabolic changes, observable by (1)H NMR spectroscopy, occurred in amniotic fluid during prenatal stress caused by hyperthermia and LPS-induced inflammation and had an impact on the gestation outcome. PMID: 21614599 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4885601 Wed, 25 May 2011 23:00:00 +0100 4885601 http://www.medworm.com/index.php?rid=4885603&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21607733%26dopt%3DAbstract CONCLUSION: The magnetic nanoparticles for drug delivery can be detected using positive contrast. Combining imaging sequences, i.e., negative contrast and susceptibility methods, increased imaging specificity of large magnetic particles and enabled their follow-up for theranostic applications. PMID: 21607733 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4885603 Mon, 23 May 2011 23:00:00 +0100 4885603 http://www.medworm.com/index.php?rid=4885609&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21594585%26dopt%3DAbstract CONCLUSION: These results suggest that measurement of aBV is a potential tool for non-invasive assessment of blood volume in intracranial tumours. PMID: 21594585 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4885609 Wed, 18 May 2011 23:00:00 +0100 4885609 http://www.medworm.com/index.php?rid=4833991&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21573877%26dopt%3DAbstract CONCLUSION: Clear contraction-related perfusion changes of the masseter muscle could be assessed in high spatial and temporal resolution by means of ASL. In contrast, no significant T2 changes were measured. ASL imaging could serve as supplementing tool for studying masticatory function and dysfunction. PMID: 21573877 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4833991 Sat, 14 May 2011 23:00:00 +0100 4833991 http://www.medworm.com/index.php?rid=4833992&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21567161%26dopt%3DAbstract CONCLUSION: It was demonstrated that values for the different DCE-MRI vascular (permeability) parameters are highly dependent on the contrast agent used. Due to their potential to better differentiate tumor from muscle tissue, higher molecular weight contrast agents show promise when evaluating tumors using DCE-MRI. PMID: 21567161 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4833992 Thu, 12 May 2011 23:00:00 +0100 4833992 http://www.medworm.com/index.php?rid=4833993&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21544680%26dopt%3DAbstract CONCLUSION: This is the first study to perform quantitative 7T MRI assessment of trabecular bone micro-architecture of the wrist. This method could be utilized to study perturbations in bone structure in subjects with osteoporosis or other bone disorders. PMID: 21544680 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4833993 Wed, 04 May 2011 23:00:00 +0100 4833993 http://www.medworm.com/index.php?rid=4781187&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21538142%26dopt%3DAbstract Authors: Chong DG, Kreis R, Bolliger CS, Boesch C, Slotboom J PMID: 21538142 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4781187 Mon, 02 May 2011 23:00:00 +0100 4781187 http://www.medworm.com/index.php?rid=4781188&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21509590%26dopt%3DAbstract CONCLUSION: More precise mapping and correction of pixel shifts and blurring is accomplished with the proposed improvements. Errors in the shift map that are caused by PSF-ghost artifacts in the multi-shot PSF acquisition, e.g., from small motion during the reference scan, do not affect the improved shift estimation method. PMID: 21509590 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4781188 Wed, 20 Apr 2011 23:00:00 +0100 4781188 http://www.medworm.com/index.php?rid=4781189&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21484477%26dopt%3DAbstract CONCLUSION: It is concluded that the impact of heat-induced susceptibility changes of fat during thermal therapy in the breast may not be neglected. PMID: 21484477 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4781189 Mon, 11 Apr 2011 23:00:00 +0100 4781189 http://www.medworm.com/index.php?rid=4781190&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21479876%26dopt%3DAbstract CONCLUSION: Air susceptibility changes associated with oxygen concentration changes greatly affect PRF MR thermometry measurements. Air temperature changes can also affect these measurements, but to a smaller degree. For uncalibrated MR thermometry, air susceptibility changes may be a significant source of error. PMID: 21479876 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4781190 Sat, 09 Apr 2011 23:00:00 +0100 4781190 http://www.medworm.com/index.php?rid=4677244&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21442433%26dopt%3DAbstract CONCLUSION: Using IP/OP-imaging with optimized parameters and post-processing, a sensitive and reliable detection of small fat/water fractions larger than 1% is possible in emulsions. PMID: 21442433 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4677244 Sun, 27 Mar 2011 00:00:00 +0100 4677244 http://www.medworm.com/index.php?rid=4677243&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21442434%26dopt%3DAbstract CONCLUSION: The results present a comprehensive analysis of the effects of different scan parameters on temperature noise, potentially benefiting the selection of scan parameters for clinical MRI thermometry. PMID: 21442434 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4677243 Sun, 27 Mar 2011 00:00:00 +0100 4677243 http://www.medworm.com/index.php?rid=4677245&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21424575%26dopt%3DAbstract CONCLUSION: 2D-Fitting offers the possibility to determine the MMBL based on a range of complementary experimental spectra not relying on smoothness criteria or global assumptions on T(1). Since 2DJ-IR includes information from spectra with different inversion and echo times, it is expected to be more robust in cases with more variable data quality and overlap with lipid resonances. PMID: 21424575 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4677245 Sun, 20 Mar 2011 00:00:00 +0100 4677245 http://www.medworm.com/index.php?rid=4615844&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21404113%26dopt%3DAbstract CONCLUSIONS: Decreased R2 in the left caudate and bilateral FWM may help in the diagnostic process and disqualifies these regions as internal controls in ALS studies. The PLIC is not a reliable diagnostic marker of ALS. PMID: 21404113 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4615844 Tue, 15 Mar 2011 00:00:00 +0100 4615844 http://www.medworm.com/index.php?rid=4555371&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21373916%26dopt%3DAbstract CONCLUSION: A novel velocity navigator with Kalman filter postprocessing in real time significantly improves the temperature accuracy over non-triggered acquisitions and suggests being comparable to a breath-held acquisition. The proposed technique might be clinically applied for monitoring of thermal ablations in abdominal organs. PMID: 21373916 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4555371 Fri, 04 Mar 2011 00:00:00 +0100 4555371 http://www.medworm.com/index.php?rid=4501330&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21331647%26dopt%3DAbstract CONCLUSION: This study demonstrates that MR microscopy can be applied at low cost on animal MR imaging systems, which are in widespread use. The successful imaging of living glioma cells indicates that the technique promises to be a useful tool in biomedical research. PMID: 21331647 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4501330 Fri, 18 Feb 2011 00:00:00 +0100 4501330 http://www.medworm.com/index.php?rid=4378806&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21249420%26dopt%3DAbstract CONCLUSION: These results encourage the use of existing classifiers based on 1.5T datasets for diagnosis with 3T (1)H SV-MRS. The large 1.5T databases compiled throughout many years and the prediction models based on 1.5T acquisitions can therefore continue to be used with data from the new 3T instruments. PMID: 21249420 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378806 Thu, 20 Jan 2011 00:00:00 +0100 4378806 http://www.medworm.com/index.php?rid=4378807&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21246250%26dopt%3DAbstract CONCLUSION: It is feasible to increase the temporal resolution at high field strength by reducing the SAR with either alternating presaturation-pulses or decreased flip angle of these pulses. PMID: 21246250 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378807 Wed, 19 Jan 2011 00:00:00 +0100 4378807 http://www.medworm.com/index.php?rid=4378809&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21221706%26dopt%3DAbstract Authors: Chang G, Wang L, Liang G, Babb JS, Saha PK, Regatte RR High-resolution magnetic resonance imaging (MRI) of trabecular bone combined with quantitative image analysis represents a powerful technique to gain insight into trabecular bone micro-architectural derangements in osteoporosis and osteoarthritis. The increased signal-to-noise ratio of ultra high-field MR (≥7 Tesla) permits images to be obtained with higher resolution and/or decreased scan time compared to scanning at 1.5/3T. In this small feasibility study, we show high measurement precision for subregional trabecular bone micro-architectural analysis performed on 7T knee MR images. The results provide further support for the use of trabecular bone measures as biomarkers in clinical studies of bone disorders. PMID: ... Magma journals http://www.medworm.com/rss/comments.php?id=4378809 Sun, 09 Jan 2011 00:00:00 +0100 4378809 http://www.medworm.com/index.php?rid=4378808&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21221707%26dopt%3DAbstract CONCLUSION: CRLB provide a golden standard to construct 95% confidence intervals, which can be used to perform protocol optimization and to test the statistical significance of K (trans)-changes in treatment evaluation. PMID: 21221707 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378808 Sat, 08 Jan 2011 00:00:00 +0100 4378808 http://www.medworm.com/index.php?rid=4378812&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21213015%26dopt%3DAbstract CONCLUSION: The method developed can accelerate and improve the accuracy of kidney volumetry in preclinical treatment trials for ADPKD. PMID: 21213015 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378812 Fri, 07 Jan 2011 00:00:00 +0100 4378812 http://www.medworm.com/index.php?rid=4378811&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21213016%26dopt%3DAbstract CONCLUSION: Our results demonstrate that the image quality of the method presented in this paper is comparable to that of an established model-based strategy when optimization of the model parameter is carried out and yields superior results to non-optimized model parameters. However, no random sampling pattern showed superior performance when compared to conventional Cartesian subsampling for the considered reconstruction strategy. PMID: 21213016 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378811 Fri, 07 Jan 2011 00:00:00 +0100 4378811 http://www.medworm.com/index.php?rid=4378810&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21213017%26dopt%3DAbstract CONCLUSION: Only high-caloric/high-fat diet combined with low physical activity led to nearly unchanged IMCL/Cr3 ratios in the evening when compared to corresponding measurements in the morning. In contrast, low-caloric/low-fat diet and especially fasting led to increasingly depleted IMCL stores in the evening. This depletion seems to be further emphasized by increased physical activity. An interesting aspect is the marked reduction of IMCL/Cr3 after 12 h of fasting, since a dramatic increase in IMCL has been reported after starvation over several days. Results of this study imply that highly standardized conditions regarding diet and physical activity are necessary for a proper assessment of IMCL data in metabolic studies. PMID: 21213017 [PubMed - as supplied by publisher] (Source: M... Magma journals http://www.medworm.com/rss/comments.php?id=4378810 Fri, 07 Jan 2011 00:00:00 +0100 4378810 http://www.medworm.com/index.php?rid=4378813&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21210181%26dopt%3DAbstract CONCLUSION: Localised shimming can result in large regions of unsuppressed water, which can lead to spurious echo artifacts in the spectrum. To help overcome these problems globally optimised shims can be used during WS. PMID: 21210181 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378813 Thu, 06 Jan 2011 00:00:00 +0100 4378813 http://www.medworm.com/index.php?rid=4378814&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21203797%26dopt%3DAbstract CONCLUSION: Though the study contained a small number of subjects and no significant difference was found, the Bayesian hierarchical model provided estimates of variability from known sources in the study and confidence intervals for all estimated parameters. We believe the BHM provides a straightforward and thorough interrogation of the imaging data at the level of voxels, patients or sites in this multicenter clinical study. PMID: 21203797 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378814 Tue, 04 Jan 2011 00:00:00 +0100 4378814 http://www.medworm.com/index.php?rid=4378815&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21165670%26dopt%3DAbstract CONCLUSION: These results suggest that at least part of the cortical reorganization observed during very simple tasks in the earliest stage of MS occurs whether or not the efferent pathways are intact. PMID: 21165670 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4378815 Fri, 17 Dec 2010 00:00:00 +0100 4378815 http://www.medworm.com/index.php?rid=4289594&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21136136%26dopt%3DAbstract Authors: Moser E, Ranjeva JP PMID: 21136136 [PubMed - in process] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4289594 Wed, 01 Dec 2010 00:00:00 +0100 4289594 http://www.medworm.com/index.php?rid=4177672&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D21076991%26dopt%3DAbstract Authors: Lowe MJ In this review article, I discuss initial and recent studies of the assessment of functional connectivity in the human brain using low-frequency BOLD fluctuations in the resting state. By putting the studies in their historical context, the goal is to give the reader an appreciation of the evolution of the field and the pivotal events and studies that have led to the widespread acceptance of the method as a neuroscience tool for investigating functional connectivity in the human brain. PMID: 21076991 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4177672 Tue, 16 Nov 2010 00:00:00 +0100 4177672 http://www.medworm.com/index.php?rid=4120059&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20972883%26dopt%3DAbstract Authors: Margulies DS, Böttger J, Long X, Lv Y, Kelly C, Schäfer A, Goldhahn D, Abbushi A, Milham MP, Lohmann G, Villringer A Analytic tools for addressing spontaneous brain activity, as acquired with fMRI during the "resting-state," have grown dramatically over the past decade. Along with each new technique, novel hypotheses about the functional organization of the brain are also available to researchers. We review six prominent categories of resting-state fMRI data analysis: seed-based functional connectivity, independent component analysis, clustering, pattern classification, graph theory, and two "local" methods. In surveying these methods, we address their underlying assumptions, methodologies, and novel applications. PMID: 20972883 [PubMed - as supplied by publisher] (Sourc... Magma journals http://www.medworm.com/rss/comments.php?id=4120059 Sat, 23 Oct 2010 23:00:00 +0100 4120059 http://www.medworm.com/index.php?rid=4023224&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20878537%26dopt%3DAbstract CONCLUSION: This work demonstrates that in an MRI experiment, the achievable precision of localization of object boundaries is not limited to the nominal resolution and can surpass it by an order of magnitude. Zero-filling is a simple and effective method of reaching it. PMID: 20878537 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4023224 Tue, 28 Sep 2010 23:00:00 +0100 4023224 http://www.medworm.com/index.php?rid=4002647&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20865296%26dopt%3DAbstract CONCLUSION: ADC measurements show promise as a highly specific tool for the discrimination of normal lymph nodes from lymphomatous lymph nodes, but appear to be of no utility in differentiating indolent from aggressive lymphomas. PMID: 20865296 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4002647 Thu, 23 Sep 2010 23:00:00 +0100 4002647 http://www.medworm.com/index.php?rid=4002648&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20862514%26dopt%3DAbstract CONCLUSION: According to the results of this work, we have demonstrated the feasibility and accuracy of accelerated high-resolution 3D ToF MRA in mice suitable for detailed depiction of mouse supra-aortic vessels and amenable to non-invasive quantification of small atherosclerotic lesions. PMID: 20862514 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=4002648 Wed, 22 Sep 2010 23:00:00 +0100 4002648 http://www.medworm.com/index.php?rid=3877695&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20706770%26dopt%3DAbstract CONCLUSION : In this study, we demonstrate the implementation of quantitative in vivo (1)H-MRS spectroscopy in migraine patients. Despite rigorous quantification, no spectroscopic abnormalities could be found in patients with migraine without aura. PMID: 20706770 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3877695 Thu, 12 Aug 2010 23:00:00 +0100 3877695 http://www.medworm.com/index.php?rid=3849162&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20694502%26dopt%3DAbstract CONCLUSION: AIR allows a good reconstruction of the dynamic stage of the image series thus leading to better dynamic effects analysis. PMID: 20694502 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3849162 Fri, 06 Aug 2010 23:00:00 +0100 3849162 http://www.medworm.com/index.php?rid=3849163&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20694501%26dopt%3DAbstract CONCLUSION: The results suggest that distortion-free echo planar imaging of moving objects may be feasible if prospective motion correction is combined with a field inhomogeneity estimation approach. PMID: 20694501 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3849163 Thu, 05 Aug 2010 23:00:00 +0100 3849163 http://www.medworm.com/index.php?rid=3772965&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20632069%26dopt%3DAbstract CONCLUSION: This technique improves the SNR of GE-WE images, while reducing acquisition time. PMID: 20632069 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3772965 Wed, 14 Jul 2010 23:00:00 +0100 3772965 http://www.medworm.com/index.php?rid=3772964&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20632070%26dopt%3DAbstract CONCLUSION: Direct quantification of mitral regurgitation with CMR compares well with indirect methods for patients with low heart rate variability, involves fewer calculations and is quick. All CMR measurements that use velocity mapping may be inaccurate, however, in patients with highly irregular rhythms and should be avoided in these patients. PMID: 20632070 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3772964 Wed, 14 Jul 2010 23:00:00 +0100 3772964 http://www.medworm.com/index.php?rid=3754854&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20625794%26dopt%3DAbstract CONCLUSION : 7T can improve spatial specificity of connectivity maps and facilitate measurement of connectivity in areas of lower intrinsic network correlation. PMID: 20625794 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3754854 Mon, 12 Jul 2010 23:00:00 +0100 3754854 http://www.medworm.com/index.php?rid=3699796&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20577778%26dopt%3DAbstract CONCLUSIONS: The presented experimental setup can be used to simulate oxygen consumption by somatic cells in vivo and for validating computational biophysical models of hypoxia, as measured with (19)F MRI oximetry. PMID: 20577778 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3699796 Thu, 24 Jun 2010 23:00:00 +0100 3699796 http://www.medworm.com/index.php?rid=3667151&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20549297%26dopt%3DAbstract CONCLUSION: The spectral pattern of mobile lipids changes reversibly with temperature. HRMAS demonstrated potential for automated brain tumor biopsy classification. No advantage was obtained when acquiring spectra at 37 degrees C with respect to 0 degrees C in most of the conditions used for the discrimination addressed. PMID: 20549297 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3667151 Sat, 12 Jun 2010 23:00:00 +0100 3667151 http://www.medworm.com/index.php?rid=3632643&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20521082%26dopt%3DAbstract CONCLUSION: Our results show that both approaches provide an adequate way of group ICA obtaining a comparable number of RSNs differing mainly in calculation times. PMID: 20521082 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3632643 Wed, 02 Jun 2010 23:00:00 +0100 3632643 http://www.medworm.com/index.php?rid=3622332&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20512521%26dopt%3DAbstract CONCLUSION: The proposed method is a comprehensive approach for the design of data-driven filters that can be easily adapted to specific needs. PMID: 20512521 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3622332 Fri, 28 May 2010 23:00:00 +0100 3622332 http://www.medworm.com/index.php?rid=3595485&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20495846%26dopt%3DAbstract CONCLUSION: The use of a deflectable catheter with a ferromagnetic tip to target the blood vessels and localize the position of device provides a novel method to use the MR system to image the anatomy and steer an interventional device which helps to increase the precision and speed of endovascular procedures. PMID: 20495846 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3595485 Thu, 20 May 2010 23:00:00 +0100 3595485 http://www.medworm.com/index.php?rid=3589149&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20490606%26dopt%3DAbstract CONCLUSION: The new method addresses the problem of susceptibility-induced signal loss, without compromising temporal resolution. It can be used for event-related functional experiments without requiring additional subject-specific calibration or calculation time. PMID: 20490606 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3589149 Thu, 20 May 2010 23:00:00 +0100 3589149 http://www.medworm.com/index.php?rid=3577687&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20473549%26dopt%3DAbstract CONCLUSIONS: Increased sleep pressure is reflected in reduced fc of main DMN and ACN nodes during rest. Results have implications for understanding perceptual and cognitive changes after sleep deprivation and are relevant to clinical studies on conditions in which increased sleep propensity is present. PMID: 20473549 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3577687 Fri, 14 May 2010 23:00:00 +0100 3577687 http://www.medworm.com/index.php?rid=3568193&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20464444%26dopt%3DAbstract CONCLUSION: This study shows that an MPP absorber, when properly designed, is effective in reducing the acoustic noise in MRI scanners. And, when designing an MPP absorber for MRI scanners, the air gap depth should be carefully considered. PMID: 20464444 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3568193 Wed, 12 May 2010 23:00:00 +0100 3568193 http://www.medworm.com/index.php?rid=3519924&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20424884%26dopt%3DAbstract CONCLUSION: The demonstrated dependence of the MWF on the two-pool parameters considerably impairs the applicability of the proposed method. PMID: 20424884 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3519924 Tue, 27 Apr 2010 23:00:00 +0100 3519924 http://www.medworm.com/index.php?rid=3519923&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20424885%26dopt%3DAbstract CONCLUSIONS: When the ASL perfusion maps showed moderate-to-high SNRs, wavelet-domain filtering was superior to Gaussian smoothing in the vicinity of borders between gray and white matter, while Gaussian smoothing was a better choice for larger homogeneous areas, irrespective of SNR. PMID: 20424885 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3519923 Tue, 27 Apr 2010 23:00:00 +0100 3519923 http://www.medworm.com/index.php?rid=3472199&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20386954%26dopt%3DAbstract CONCLUSIONS: The effect of intratracheal administration of LPS in mice was investigated by MRI and histology. A good correlation was observed between GRE-MRI and histological findings. MR images obtained with UTE sequences appear to be more sensitive to the presence of lesions than those obtained by standard GRE acquisitions. PMID: 20386954 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3472199 Mon, 12 Apr 2010 23:00:00 +0100 3472199 http://www.medworm.com/index.php?rid=3454751&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20376530%26dopt%3DAbstract CONCLUSION: The parameters of the biexponential and diffusional kurtosis models are more sensitive than the exponential model to Delta and delta; however, observed effects are too small to account for the discrepancies found in literature. PMID: 20376530 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3454751 Wed, 07 Apr 2010 23:00:00 +0100 3454751 http://www.medworm.com/index.php?rid=3433227&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20358254%26dopt%3DAbstract Authors: Le Fur Y, Nicoli F, Guye M, Confort-Gouny S, Cozzone PJ, Kober F PMID: 20358254 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3433227 Wed, 31 Mar 2010 23:00:00 +0100 3433227 http://www.medworm.com/index.php?rid=3425382&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20352289%26dopt%3DAbstract CONCLUSION: The computation times of GPU-TV show that interactive elimination of undersampling artifacts is possible even for large volume data sets, in particular allowing the interactive determination of the regularization parameter. Results from phantom measurements and in vivo angiography data sets show that 3D TV, together with the proposed sampling trajectory, leads to pronounced improvements in image quality. However, while artifact removal was very efficient for angiography data sets in this work, it cannot be expected that the proposed method of TV post-processing will work for arbitrary types of scans. PMID: 20352289 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3425382 Mon, 29 Mar 2010 23:00:00 +0100 3425382 http://www.medworm.com/index.php?rid=3425383&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20349109%26dopt%3DAbstract Authors: Guye M, Bettus G, Bartolomei F, Cozzone PJ Graph theoretical analysis of structural and functional connectivity MRI data (ie. diffusion tractography or cortical volume correlation and resting-state or task-related (effective) fMRI, respectively) has provided new measures of human brain organization in vivo. The most striking discovery is that the whole-brain network exhibits "small-world" properties shared with many other complex systems (social, technological, information, biological). This topology allows a high efficiency at different spatial and temporal scale with a very low wiring and energy cost. Its modular organization also allows for a high level of adaptation. In addition, degree distribution of brain networks demonstrates highly connected hubs that are crucial for ... Magma journals http://www.medworm.com/rss/comments.php?id=3425383 Sat, 27 Mar 2010 00:00:00 +0100 3425383 http://www.medworm.com/index.php?rid=3378872&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229085%26dopt%3DAbstract CONCLUSION: LLE is promising for fMRI data analysis and has potential advantages compared with PCA in terms of its ability to find non-linear relationships. PMID: 20229085 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3378872 Sat, 13 Mar 2010 00:00:00 +0100 3378872 http://www.medworm.com/index.php?rid=3378871&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229086%26dopt%3DAbstract CONCLUSIONS: The proposed signal model produced more accurate predictions of myocardial signal compared to existing models and can be used for the optimization of pulse sequences and protocols. PMID: 20229086 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3378871 Sat, 13 Mar 2010 00:00:00 +0100 3378871 http://www.medworm.com/index.php?rid=3378870&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229087%26dopt%3DAbstract CONCLUSION: The anterior commissure may play a more important role in interhemispheric communication than currently presumed by conveying axons from a wider territory, and the fibre field similarity maps give a novel approach to quantifying and visualising characteristics of fibre tracts. PMID: 20229087 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3378870 Sat, 13 Mar 2010 00:00:00 +0100 3378870 http://www.medworm.com/index.php?rid=3378869&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229088%26dopt%3DAbstract CONCLUSIONS: Flow velocities and wall shear stress were successfully measured in this mouse model of stable and unstable plaque. The presented tools can be used to provide valuable insights in the pathogenesis of atherosclerosis. PMID: 20229088 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3378869 Sat, 13 Mar 2010 00:00:00 +0100 3378869 http://www.medworm.com/index.php?rid=3289100&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20169464%26dopt%3DAbstract CONCLUSION: The study confirms that conscious sedation induces LFF increase, but demonstrates that this effect is mediated by increased head motion. Hence, caution in design and interpretation is recommended for studies comparing subjects or conditions differently predisposing to head motion. PMID: 20169464 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3289100 Fri, 19 Feb 2010 00:00:00 +0100 3289100 http://www.medworm.com/index.php?rid=3289099&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20169465%26dopt%3DAbstract CONCLUSIONS: These PD-related asymmetry ratios might be the result of counteracting changes in both intact and affected striatum and allowed us to diagnose PD lesions. As lateralization is known to occur also in PD patients and might be expected in transgenic PD models as well, we propose that MR-derived asymmetry ratios in the striatum might be a useful tool for in vivo phenotyping of animal models of PD. PMID: 20169465 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3289099 Fri, 19 Feb 2010 00:00:00 +0100 3289099 http://www.medworm.com/index.php?rid=3282809&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20162320%26dopt%3DAbstract CONCLUSION: The task-modulation of dynamic FNC provided findings and differences between the two groups that are consistent with the existing hypothesis that schizophrenia patients show less segregated motor, sensory, cognitive functions and less segregated default mode network activity when engaged with a task. Dynamic FNC, based on sICA, provided additional results which are different than, but complementary to, those of static FNC. For example, it revealed dynamic changes in default mode network connectivities with other regions which were significantly different in schizophrenia in terms of task-modulation, findings which were not possible to discover by static FNC. PMID: 20162320 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3282809 Wed, 17 Feb 2010 00:00:00 +0100 3282809 http://www.medworm.com/index.php?rid=3236148&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20119748%26dopt%3DAbstract CONCLUSION: The proposed diffusion simulation-based tracking method used the whole tensor information of a neighborhood of voxels and is, therefore, able to handle problematic tracking situations better than established methods. PMID: 20119748 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3236148 Sat, 30 Jan 2010 00:00:00 +0100 3236148 http://www.medworm.com/index.php?rid=3217145&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20101434%26dopt%3DAbstract Authors: Rosenkranz K, Lemieux L The brain's activity can be measured in numerous complementary ways, including electroencephalography (EEG) and functional magnetic resonance imaging (fMRI). The simultaneous acquisition of EEG and fMRI was originally developed to make the localization of the generators of often subtle pathological activity commonly observed in EEG recordings of patients with epilepsy more sensitive and spatially accurate by mapping their hemodynamic correlates. Now, the value of the information provided by simultaneous EEG-fMRI is being evaluated in a clinical context, while in parallel, more sophisticated data analysis techniques, e.g. with electrical source imaging or dynamic causal modeling, have begun to be applied to increase the technique's sensitivity and allow ... Magma journals http://www.medworm.com/rss/comments.php?id=3217145 Tue, 26 Jan 2010 00:00:00 +0100 3217145 http://www.medworm.com/index.php?rid=3168133&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20066469%26dopt%3DAbstract CONCLUSION: These results show that macroscopic vascular abnormalities are part of the pathological alterations developed by APP(SweLon)/PS1(M146L) mouse models of AD. PMID: 20066469 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3168133 Tue, 12 Jan 2010 00:00:00 +0100 3168133 http://www.medworm.com/index.php?rid=3111975&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20024667%26dopt%3DAbstract CONCLUSION: Wavelet encoding is suitable for small FOV imaging in dynamic MRI studies. PMID: 20024667 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3111975 Sat, 19 Dec 2009 00:00:00 +0100 3111975 http://www.medworm.com/index.php?rid=3111974&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20024668%26dopt%3DAbstract CONCLUSION: Using the simulation framework and metrics described the interaction of different spatial encoding approaches could be investigated. Regular sub-sampling provided optimal reconstruction, independent of whether the spatial encoding was achieved by gradients only or a combination of gradient and RF. PMID: 20024668 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3111974 Sat, 19 Dec 2009 00:00:00 +0100 3111974 http://www.medworm.com/index.php?rid=3102215&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20012152%26dopt%3DAbstract Authors: Kickler N, van der Zwaag W, Mekle R, Kober T, Marques JP, Krueger G, Gruetter R INTRODUCTION: Eddy currents induced by switching of magnetic field gradients can lead to distortions in short echo-time spectroscopy or diffusion weighted imaging. In small bore magnets, such as human head-only systems, minimization of eddy current effects is more demanding because of the proximity of the gradient coil to conducting structures. METHODS: In the present study, the eddy current behavior achievable on a recently installed 7 tesla-68 cm bore head-only magnet was characterized. RESULTS: Residual effects after compensation were shown to be on the same order of magnitude as those measured on two whole body systems (3 and 4.7 T), while using two to three fold increased gradient slewrates. ... Magma journals http://www.medworm.com/rss/comments.php?id=3102215 Wed, 09 Dec 2009 00:00:00 +0100 3102215 http://www.medworm.com/index.php?rid=3060326&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19960361%26dopt%3DAbstract Authors: Knutsson L, Ståhlberg F, Wirestam R Absolute quantification of cerebral blood flow, cerebral blood volume and mean transit time is desirable in the determination of tissue viability thresholds and tissue at risk in acute ischaemic stroke, as well as in cases where a global reduction in cerebral blood flow is expected, for example, in patients with dementia or depressive disorders. Absolute values are also useful when comparing sequential examinations of tissue perfusion parameters, for example, in the monitoring and follow-up of various kinds of therapy. Regardless of the method employed, a number of assumptions and approximations must be made to obtain absolute measures of perfusion. Furthermore, the different stages of data acquisition and processing are associated with... Magma journals http://www.medworm.com/rss/comments.php?id=3060326 Fri, 04 Dec 2009 00:00:00 +0100 3060326 http://www.medworm.com/index.php?rid=3045612&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19946791%26dopt%3DAbstract CONCLUSIONS: Measurement of all relevant T (1) values of acute thrombi and normal blood achieved accurate and reproducible results in vivo. Fast T (1) quantification of the thrombus can provide information about tissue characteristics such as thrombus resolution. Such a quantitative MRI technique may be valuable in studying the factors that influence natural resolution and in evaluating treatment effects that enhance this process. PMID: 19946791 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3045612 Sat, 28 Nov 2009 00:00:00 +0100 3045612 http://www.medworm.com/index.php?rid=3013370&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19924456%26dopt%3DAbstract CONCLUSION: The results presented demonstrate the feasibility of high-resolution dental MRI to three-dimensionally visualize and quantify carious lesions, including approximal and occult caries lesions, and measure the minimum distance to the dental pulp. PMID: 19924456 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3013370 Thu, 19 Nov 2009 00:00:00 +0100 3013370 http://www.medworm.com/index.php?rid=3005931&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19921294%26dopt%3DAbstract CONCLUSION: It is possible to detect PUFAs in prostate tissues using our NMR-based spectroscopic approach. PMID: 19921294 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=3005931 Tue, 17 Nov 2009 00:00:00 +0100 3005931 http://www.medworm.com/index.php?rid=2940253&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19859754%26dopt%3DAbstract CONCLUSION: These methods are effective for coupled and uncoupled modal analysis of MRI scanner systems and can be used for quiet MRI design or sound absorber design for existing MRI systems. PMID: 19859754 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2940253 Tue, 27 Oct 2009 00:00:00 +0100 2940253 http://www.medworm.com/index.php?rid=2857908&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19779748%26dopt%3DAbstract Authors: PMID: 19779748 [PubMed - in process] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2857908 Wed, 30 Sep 2009 23:00:00 +0100 2857908 http://www.medworm.com/index.php?rid=2834550&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19779747%26dopt%3DAbstract CONCLUSION: These results provide key normative data for 2nd and 3rd trimester amniotic fluid metabolite concentrations and provide the foundation for future development of magnetic resonance spectroscopy (MRS) biomarkers to evaluate fetal health and development. PMID: 19779747 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2834550 Thu, 24 Sep 2009 23:00:00 +0100 2834550 http://www.medworm.com/index.php?rid=2828716&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19774405%26dopt%3DAbstract CONCLUSION: The results show that the phase coherence between the transmitter and the receiver and the dynamic range of the receiver are greatly improved. Consequently, the proposed digital receiver may be useful for obtaining multiple-slice two-dimensional magnetic resonance images with very high resolution. PMID: 19774405 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2828716 Tue, 22 Sep 2009 23:00:00 +0100 2828716 http://www.medworm.com/index.php?rid=2766370&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19727877%26dopt%3DAbstract CONCLUSION: Signal intensity of both liver lobes are affected by cardiac motion in DWI. In the left liver lobe, signal loss especially occurs in the superior-inferior direction of MPGs, whereas in the right lobe, signal loss especially occurs in the left-right direction of MPGs. PMID: 19727877 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2766370 Tue, 01 Sep 2009 23:00:00 +0100 2766370 http://www.medworm.com/index.php?rid=2672396&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19653021%26dopt%3DAbstract CONCLUSION: With sufficient RF field homogeneity (3%) and proper calibration (4%), the VFA approach can provide rapid and reliable 3-D T (1) mapping of hyperpolarized (3)He without the need for additional flip angle information. PMID: 19653021 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2672396 Mon, 03 Aug 2009 23:00:00 +0100 2672396 http://www.medworm.com/index.php?rid=2662716&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19644720%26dopt%3DAbstract CONCLUSIONS: Combined [Formula: see text]-weighted imaging and SGM using the same complex image data was found to provide complementary information and high sensitivity to detect distortion inducing agents. PMID: 19644720 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2662716 Thu, 30 Jul 2009 23:00:00 +0100 2662716 http://www.medworm.com/index.php?rid=2577252&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19578915%26dopt%3DAbstract CONCLUSIONS: Although N2 ghosting can be reduced by adjusting the bandwidth of EPI on the time-series of PWI data, the effects cannot be entirely eliminated. In particular, N2 ghosting can bias CBF quantification if EPI control scans to determine the equilibrium-state signal are confounded by N2 ghosting. Therefore, careful tuning of the bandwidth of EPI is necessary to avoid artifacts in the ASL signal from N2-ghosting. PMID: 19578915 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2577252 Fri, 03 Jul 2009 23:00:00 +0100 2577252 http://www.medworm.com/index.php?rid=2539296&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19449047%26dopt%3DAbstract CONCLUSION: With newly introduced echo-dephased SSFP approach, accurate and reliable visualization of paramagnetic interventional device is feasible. PMID: 19449047 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2539296 Fri, 15 May 2009 23:00:00 +0100 2539296 http://www.medworm.com/index.php?rid=2539298&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19390886%26dopt%3DAbstract CONCLUSION: Automatic segmentation allows for the more reproducible, objective assessment of transplanted PI. Quantification confirms the assumption that a significant number of islets are destroyed in the first week following transplantation irrespective of allografts, xenografts or isografts. PMID: 19390886 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2539298 Thu, 23 Apr 2009 23:00:00 +0100 2539298 http://www.medworm.com/index.php?rid=2539297&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19390887%26dopt%3DAbstract CONCLUSION: Analysis of D: -glucuronic acid in bile could be valuable in the detection of pancreatic cancer, and detecting GlcUA by in vivo (1)H MRS has the potential to help in the non-invasive diagnosis of pancreatic cancer. Given that only four cancer patients have been studied so far, the new biomarker is regarded as a preliminary finding, but one that warrants further investigation. PMID: 19390887 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2539297 Thu, 23 Apr 2009 23:00:00 +0100 2539297 http://www.medworm.com/index.php?rid=2539299&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19381701%26dopt%3DAbstract CONCLUSION: The new method offers a conceptual understanding of the first bolus passage and yields similar results to the gamma variate function fit approach but performs much faster. PMID: 19381701 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2539299 Mon, 20 Apr 2009 23:00:00 +0100 2539299 http://www.medworm.com/index.php?rid=2539300&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19367422%26dopt%3DAbstract CONCLUSION: Fast metabolite mapping based on multiecho balanced SSFP in combination with an iterative reconstruction approach could successfully separate several (1)H resonances and hyperpolarized (13)C metabolites. PMID: 19367422 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2539300 Tue, 14 Apr 2009 23:00:00 +0100 2539300 http://www.medworm.com/index.php?rid=2316315&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19337766%26dopt%3DAbstract CONCLUSION: Using a rigid 3D-registration algorithm provides voxel-based T2 reproducibility errors comparable to former, 2D region-based approaches, thus opening the possibility of voxel-based monitoring of cartilage degradation in osteoarthritis. PMID: 19337766 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2316315 Wed, 01 Apr 2009 04:00:00 +0100 2316315 http://www.medworm.com/index.php?rid=2316321&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19326160%26dopt%3DAbstract CONCLUSION: An internal coil design method that takes advantage of the UISNR and optimum coil sensitivity calculations was presented. This method can also be used to design better internal MRI coils for different applications. PMID: 19326160 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2316321 Fri, 27 Mar 2009 04:00:00 +0100 2316321 http://www.medworm.com/index.php?rid=2217942&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19238470%26dopt%3DAbstract CONCLUSION: No direct impact of cell transplantation was observed in the lesion. However, changes in the contralateral hemisphere suggest that the transplanted MSCs might stimulate repair processes and plasticity resulting in the generation of newborn cells, which might enable the faster adoption of the damaged tissue's function by healthy tissue. PMID: 19238470 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2217942 Tue, 24 Feb 2009 05:00:00 +0100 2217942 http://www.medworm.com/index.php?rid=2217941&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19238471%26dopt%3DAbstract CONCLUSIONS: The image intensities in clinical STIR images acquired at different times can be compared directly, provided that the acquisition protocol is standardized and that nonuniformity correction is applied. Nonuniformity correction is preferably based on multiple phantom scans. PMID: 19238471 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2217941 Tue, 24 Feb 2009 05:00:00 +0100 2217941 http://www.medworm.com/index.php?rid=2217940&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19238472%26dopt%3DAbstract CONCLUSION: The careful choice of two z-shim values by the proposed method achieves through-slice signal loss correction for the majority of pixels in the brain for 3 mm slices at 3T. PMID: 19238472 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2217940 Tue, 24 Feb 2009 05:00:00 +0100 2217940 http://www.medworm.com/index.php?rid=2157324&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19184152%26dopt%3DAbstract CONCLUSION: The demonstration of the feasibility of hair MRI potentially adds a new tool to the large variety of analytical methods used nowadays in the development of hair care products. PMID: 19184152 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2157324 Sat, 31 Jan 2009 05:00:00 +0100 2157324 http://www.medworm.com/index.php?rid=2141943&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19172323%26dopt%3DAbstract CONCLUSION: The proposed modality allows for the assessment of disease activity in arthritis without the application of contrast-medium offering a new tool for therapy monitoring. As the technique provides quantitative information on hyperaemia, it potentially offers new insights in the pathophysiology of arthritic diseases. PMID: 19172323 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2141943 Tue, 27 Jan 2009 05:00:00 +0100 2141943 http://www.medworm.com/index.php?rid=2122428&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19153787%26dopt%3DAbstract CONCLUSION: This study has demonstrated the application of high-field MRI for characterizing the temporal progression of morphological and mechanical changes to murine aortic vasculature associated with atherosclerotic lesion development. PMID: 19153787 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2122428 Tue, 20 Jan 2009 05:00:00 +0100 2122428 http://www.medworm.com/index.php?rid=2065873&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19107536%26dopt%3DAbstract CONCLUSION: The synthesized nanoparticles were able to non-invasively target the traumatic brain lesion, inducing a specific T2* decrease of about 25% up to at least 70 min post-injection of the targeted contrast agent. PMID: 19107536 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2065873 Wed, 24 Dec 2008 05:00:00 +0100 2065873 http://www.medworm.com/index.php?rid=2065872&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19107537%26dopt%3DAbstract CONCLUSION: Using MRI, we were able to monitor the cystic volume in a mouse model of PKD to assess the therapeutic effect of anticystic treatment. PMID: 19107537 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2065872 Wed, 24 Dec 2008 05:00:00 +0100 2065872 http://www.medworm.com/index.php?rid=2028545&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19067007%26dopt%3DAbstract DISCUSSION: We show that these effects are relevant for current clinical settings of DTI. PMID: 19067007 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2028545 Tue, 09 Dec 2008 05:00:00 +0100 2028545 http://www.medworm.com/index.php?rid=2028544&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19067008%26dopt%3DAbstract CONCLUSIONS: This equipment is suited to investigators who have an established small animal NMR and wish to explore the potential of heteronuclear ((13) C and (15) N) MRI, MRS, which harnesses the enormous sensitivity gain offered by hyperpolarization. PMID: 19067008 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2028544 Sat, 06 Dec 2008 05:00:00 +0100 2028544 http://www.medworm.com/index.php?rid=2028543&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19067009%26dopt%3DAbstract CONCLUSION: PASADENA spin hyperpolarization of SUC to 15.3% in average was demonstrated (37,400 fold signal enhancement at 4.7 T). The biological fate of (13)C succinate, a normally occurring cellular intermediate, might be monitored with enhanced sensitivity. PMID: 19067009 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=2028543 Sat, 06 Dec 2008 05:00:00 +0100 2028543 http://www.medworm.com/index.php?rid=1992402&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19031091%26dopt%3DAbstract CONCLUSION: This preliminary study indicates that HRMAS NMR of routinely obtained PNBs can provide detailed metabolic information of intact prostate tissue with clinical relevance. PMID: 19031091 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1992402 Tue, 25 Nov 2008 05:00:00 +0100 1992402 http://www.medworm.com/index.php?rid=1981689&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19020913%26dopt%3DAbstract Authors: Mountford C PMID: 19020913 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1981689 Thu, 20 Nov 2008 05:00:00 +0100 1981689 http://www.medworm.com/index.php?rid=1952867&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18998181%26dopt%3DAbstract CONCLUSION: S in GM could be an alternative marker to monitor the disease course before the repercussion on the clinical score. PMID: 18998181 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1952867 Sat, 08 Nov 2008 05:00:00 +0100 1952867 http://www.medworm.com/index.php?rid=1943857&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18989714%26dopt%3DAbstract CONCLUSIONS: The prediction of the tumor type of in-vivo MRS is possible using classifiers developed from previously acquired data, in different hospitals with different instrumentation under the same acquisition protocols. This methodology may find application for assisting in the diagnosis of new brain tumor cases and for the quality control of multicenter MRS databases. PMID: 18989714 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1943857 Fri, 07 Nov 2008 05:00:00 +0100 1943857 http://www.medworm.com/index.php?rid=1912063&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18953587%26dopt%3DAbstract CONCLUSION: The analysis of the correlation between Cho concentrations and Tr(ADC) values on a pixel-by-pixel basis should help the regional identification of the pathological state of a tissue in patients with a glioblastoma. PMID: 18953587 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1912063 Sat, 25 Oct 2008 04:00:00 +0100 1912063 http://www.medworm.com/index.php?rid=1906433&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18949497%26dopt%3DAbstract CONCLUSION: It is possible to detect glycine at 7 T in human brain, at the short TE of 30 ms with a single spin-echo excitation scheme. PMID: 18949497 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1906433 Fri, 24 Oct 2008 04:00:00 +0100 1906433 http://www.medworm.com/index.php?rid=1906432&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18949498%26dopt%3DAbstract CONCLUSION: Increased enhancement of a degenerated disc is associated mostly with disc space narrowing and with the presence of degenerative endplate changes and endplate defects. PMID: 18949498 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1906432 Fri, 24 Oct 2008 04:00:00 +0100 1906432 http://www.medworm.com/index.php?rid=1880683&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18855032%26dopt%3DAbstract CONCLUSION: This spectroscopic study reveals that unilateral high-grade ICA stenosis has an effect on cerebral high-energy metabolism of both hemispheres, which is at least partially reversible after treatment. Therefore the restoration of blood flow in high-grade ICA stenosis recovers the impaired energy balance of the brain. PMID: 18855032 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1880683 Wed, 15 Oct 2008 04:00:00 +0100 1880683 http://www.medworm.com/index.php?rid=1880682&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18855033%26dopt%3DAbstract CONCLUSION: PEI-25 was studied as possible MRI contrast agent (CA) to map the cerebral blood volume (CBV) and cerebral blood flow (CBF) in an animal model obtaining promising results. The reported compounds may be further functionalized to afford novel multifunctional systems for biomedical applications. PMID: 18855033 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1880682 Wed, 15 Oct 2008 04:00:00 +0100 1880682 http://www.medworm.com/index.php?rid=1848391&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18830648%26dopt%3DAbstract CONCLUSION: Appropriate data processing of short and long TE (1)H MRSI provides a tool to distinguish and to quantify Gly and MI concentrations in gliomas. As Gly seems to be a marker of malignancy, more dedicated spectroscopic methods to differentiate these metabolites are justified. PMID: 18830648 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1848391 Wed, 01 Oct 2008 04:00:00 +0100 1848391 http://www.medworm.com/index.php?rid=1826813&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18810519%26dopt%3DAbstract CONCLUSION: The evaluation of HARDI data in clinical conditions with q-ball or spherical deconvolution shows consistency and reproducibility similar to the diffusion tensor model, but provides valuable additional information about a second dominant direction of diffusion. PMID: 18810519 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1826813 Tue, 23 Sep 2008 04:00:00 +0100 1826813 http://www.medworm.com/index.php?rid=1816276&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18807078%26dopt%3DAbstract CONCLUSION: The implemented semi LASER CSI sequence allows following regional changes of metabolite levels. It is suitable for investigation of local differences in brain metabolism and development. PMID: 18807078 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1816276 Sat, 20 Sep 2008 04:00:00 +0100 1816276 http://www.medworm.com/index.php?rid=1810172&cid=s_36805_37_f&fid=36805&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D18802730%26dopt%3DAbstract CONCLUSION: This work enables greater accuracy to be achieved in passive fiducial tracking. PMID: 18802730 [PubMed - as supplied by publisher] (Source: Magma) Magma journals http://www.medworm.com/rss/comments.php?id=1810172 Fri, 19 Sep 2008 04:00:00 +0100 1810172