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Improvement of image quality in diffusion-weighted imaging with model-based deep learning reconstruction for evaluations of the head and neck
DiscussionDL-based image reconstruction with the model-based technique effectively provided sufficient image quality in head/neck DWI. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - November 21, 2023 Category: Materials Science Source Type: research

Compressed SVD-based L  + S model to reconstruct undersampled dynamic MRI data using parallel architecture
ConclusionThe proposed method is well-suited for real-time clinical applications, offering a substantial reduction in reconstruction time. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - November 18, 2023 Category: Materials Science Source Type: research

Physiological confounders of renal blood flow measurement
ConclusionFuture studies aiming to measure RBF are encouraged to follow a rigorous study design, that takes into account these recommendations for controlling the factors that can influence RBF results. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - November 16, 2023 Category: Materials Science Source Type: research

Quantitative imaging through the production chain: from idea to application
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - November 11, 2023 Category: Materials Science Source Type: research

Cranial bone imaging using ultrashort echo-time bone-selective MRI as an alternative to gradient-echo based “black-bone” techniques
This study evaluated three MRI cranial bone imaging techniques for their strengths and limitations as a radiation-free alternative to CT.MethodsTen healthy adults were scanned at 3  T with three MRI sequences: dual-radiofrequency and dual-echo ultrashort echo time sequence (DURANDE), zero echo time (ZTE), and gradient-echo (GRE). DURANDE bright-bone images were generated by exploiting bone signal intensity dependence on RF pulse duration and echo time, while ZTE bright-bone i mages were obtained via logarithmic inversion. Three skull segmentations were derived, and the overlap of the binary masks was quantified using dice...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - November 7, 2023 Category: Materials Science Source Type: research

New clinical opportunities of low-field MRI: heart, lung, body, and musculoskeletal
This article summarizes promising body applications for contemporary whole-body low-field MRI systems, with a focus on new platforms developed within the past 5 years. This is an active area of research, and one can expect many improvements as MRI physicists fully explore the landscape of puls e sequences that are feasible, and as clinicians apply these to patient populations. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - October 30, 2023 Category: Materials Science Source Type: research

Synthesis and evaluation of new magneto-fluorescent carbon dot based on manganese citrate for MRI imaging
ConclusionBased on the results obtained, the synthesized carbon quantum dots could be used as fluorescence/MRI bimodal platform for in vivo imaging. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - October 20, 2023 Category: Materials Science Source Type: research

A reproducibility study of knee cartilage volume and thickness values derived by fully automatic segmentation based on three-dimensional dual-echo in steady state data from 1.5  T and 3 T magnetic resonance imaging
ConclusionThe cartilage segmentation software had high repeatability for DESS images obtained from the same device. In addition, the overall reproducibility of the images obtained from equipment of two different field strengths was satisfactory. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - October 10, 2023 Category: Materials Science Source Type: research

Subject-specific timing adaption in time-encoded arterial spin labeling imaging
DiscussionA first positive assessment of the results was performed on healthy volunteers. The extent to which the results can be transferred to patients and are of benefit must be investigated in follow-up studies. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 28, 2023 Category: Materials Science Source Type: research

First implementation of dynamic oxygen-17 (17O) magnetic resonance imaging at 7 Tesla during neuronal stimulation in the human brain
DiscussionThe change of cerebral oxygen metabolism induced by sensorimotor and visual stimulation is not large enough to be reliably detected with the current setup and methodology of dynamic17O MRI at 7  T. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 22, 2023 Category: Materials Science Source Type: research

Dynamics of γ-aminobutyric acid concentration in the human brain in response to short visual stimulation
ConclusionThe quick response of the observed GABA concentration to the short stimulus is most likely due to a release of GABA from vesicles followed by its packaging back into vesicles. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 16, 2023 Category: Materials Science Source Type: research

Comparison of convolutional-neural-networks-based method and LCModel on the quantification of in vivo magnetic resonance spectroscopy
ConclusionIn conclusion, the CNN based method with the proposed scaling procedures can be employed to quantify in vivo MRS spectra and derive metabolites concentrations in IU. The SE can be used as error index, indicating predicted uncertainties for metabolites and sharing information similar to the absolute CRLB. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 15, 2023 Category: Materials Science Source Type: research

The role of gadolinium-based contrast agents in magnetic resonance imaging structured reporting and data systems (RADS)
AbstractAmong the 28 reporting and data systems (RADS) available in the literature, we identified 15 RADS that can be used in Magnetic Resonance Imaging (MRI). Performing examinations without using gadolinium-based contrast agents (GBCA) has benefits, but GBCA administration is often required to achieve an early and accurate diagnosis. The aim of the present review is to summarize the current role of GBCA in MRI RADS. This overview suggests that GBCA are today required in most of the current RADS and are expected to be used in most MRIs performed in patients with cancer. Dynamic contrast enhancement is required for correct...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 13, 2023 Category: Materials Science Source Type: research

Dynamic cardiac MRI with high spatiotemporal resolution using accelerated spiral-out and spiral-in/out bSSFP pulse sequences at 1.5  T
DiscussionCompared to the time-consuming standard cine (~  5 min) which requires ECG-gating and breath-holds, the proposed spiral bSSFP sequences achieved ungated, free-breathing cardiac movies at a similar spatial (1.5 × 1.5 × 8 mm3) and temporal resolution (36  ms) per slice for whole heart coverage (10–15 slices) within 45 s, suggesting the clinical potential for improved patient comfort or for imaging patients with arrhythmias or who cannot hold their breath. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 4, 2023 Category: Materials Science Source Type: research

Book of Abstracts ESMRMB 2023 Online 39th Annual Scientific Meeting 4 –7 October 2023
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - September 1, 2023 Category: Materials Science Source Type: research