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Magnetic resonance metrics for identification of cuprizone-induced demyelination in the mouse model of neurodegeneration: a review
AbstractNeurodegenerative disorders, including Multiple Sclerosis (MS), are heterogenous disorders which affect the myelin sheath of the central nervous system (CNS). Magnetic Resonance Imaging (MRI) provides a non-invasive method for studying, diagnosing, and monitoring disease progression. As an emerging research area, many studies have attempted to connect MR metrics to underlying pathophysiological presentations of heterogenous neurodegeneration. Most commonly, small animal models are used, including Experimental Autoimmune Encephalomyelitis (EAE), Theiler ’s Murine Encephalomyelitis (TMEV), and toxin models includin...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - April 18, 2024 Category: Materials Science Source Type: research

Results of the 2023 ISBI challenge to reduce GABA-edited MRS acquisition time
ConclusionDL-based reconstruction pipelines have the promise to reduce the number of transients required for GABA-edited MRS. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - April 13, 2024 Category: Materials Science Source Type: research

Spinet-QSM: model-based deep learning with schatten p-norm regularization for improved quantitative susceptibility mapping
ConclusionThe proposed SpiNet-QSM showed a consistent improvement of at least 5% in terms of the high-frequency error norm (HFEN) and normalized root mean squared error (NRMSE) over other QSM reconstruction methods with limited training data. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - April 10, 2024 Category: Materials Science Source Type: research

Conversion map from quantitative parameter mapping to myelin water fraction: comparison with R1 ·R2* and myelin water fraction in white matter
DiscussionMWFQPM map improved image quality compared to the mGRE-MWF map. Myelin water atlas template derived from MWFQPM may be generated with combined multiple WM regions. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - April 6, 2024 Category: Materials Science Source Type: research

Quantifying H & amp;E staining results, grading and predicting IDH mutation status of gliomas using hybrid multi-dimensional MRI
DiscussionHM-MRI can aid in non-invasive diagnosis of gliomas. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - April 5, 2024 Category: Materials Science Source Type: research

Diffusion weighted imaging combining respiratory triggering and navigator echo tracking in the upper abdomen
ConclusionThe RT  + NV Track method is an efficient imaging method that combines the advantages of both RT and NV methods in upper abdominal DWI, providing stably good images in a short scan time. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 24, 2024 Category: Materials Science Source Type: research

Impact of truncating diffusion MRI scans on diffusional kurtosis imaging
ConclusionThe impact of truncation depends on specific histogram-based DKI metrics. The use of a strategy for optimizing the acquisition order is advisable to improve DKI robustness to exam interruptions. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 23, 2024 Category: Materials Science Source Type: research

Late/delayed gadolinium enhancement in MRI after intravenous administration of extracellular gadolinium-based contrast agents: is it worth waiting?
AbstractThe acquisition of images minutes or even hours after intravenous extracellular gadolinium-based contrast agents (GBCA) administration ( “Late/Delayed Gadolinium Enhancement” imaging; in this review, further termed LGE) has gained significant prominence in recent years in magnetic resonance imaging. The major limitation of LGE is the long examination time; thus, it becomes necessary to understand when it is worth waiting time aft er the intravenous injection of GBCA and which additional information comes from LGE. LGE can potentially be applied to various anatomical sites, such as heart, arterial vessels, lung,...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 22, 2024 Category: Materials Science Source Type: research

Multi-target field control for matrix gradient coils
ConclusionsWith the proposed improved simulated annealing algorithm and swapping modes, multi-target field control for matrix gradient coils is verified and achieved in this study by optimizing the coil element distribution. Moreover, this study provides a solution to simplify the complexity of controlling the matrix gradient coil in spatial encoding. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 22, 2024 Category: Materials Science Source Type: research

Improved reconstruction for highly accelerated propeller diffusion 1.5  T clinical MRI
ConclusionThe LLR remarkably enhances the SNR compared to online reconstruction. Moreover, RU-Net improves propeller FSE-dMRI as reflected in PSNR, SSIM, and NRMSE. It requires only 1-NEX data, which allows a 2  × scan time reduction. In addition, its speed is approximately 1500 times faster than that of LLR-constrained reconstruction. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 22, 2024 Category: Materials Science Source Type: research

Stop moving: MR motion correction as an opportunity for artificial intelligence
AbstractSubject motion is a long-standing problem of magnetic resonance imaging (MRI), which can seriously deteriorate the image quality. Various prospective and retrospective methods have been proposed for MRI motion correction, among which deep learning approaches have achieved state-of-the-art motion correction performance. This survey paper aims to provide a comprehensive review of deep learning-based MRI motion correction methods. Neural networks used for motion artifacts reduction and motion estimation in the image domain or frequency domain are detailed. Furthermore, besides motion-corrected MRI reconstruction, how ...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 22, 2024 Category: Materials Science Source Type: research

Reply to Comment on ‘Nanodiamond incorporated human liver mimicking phantoms: prospective calibration medium of magnetic resonance imaging’
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 22, 2024 Category: Materials Science Source Type: research

Fast online spectral-spatial pulse design for subject-specific fat saturation in cervical spine and foot imaging at 1.5  T
DiscussionAn individual pulse design that primarily compensates for main field (B0) inhomogeneities in fat pre-saturation is successfully implemented within an online"push-button" workflow. Both fat saturation homogeneity and the level of suppression are improved. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 17, 2024 Category: Materials Science Source Type: research

Linearity and bias of proton density fat fraction across the full dynamic range of 0 –100%: a multiplatform, multivendor phantom study using 1.5T and 3T MRI at two sites
DiscussionPDFF across the 0 –100% range can be reliably estimated using current commercial offerings at 1.5T and 3T. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 13, 2024 Category: Materials Science Source Type: research

High-resolution prostate diffusion MRI using eddy current-nulled convex optimized diffusion encoding and random matrix theory-based denoising
ConclusionsHR-ENCODE-RMT can shorten the acquisition time and improve the aSNR of high-resolution prostate DWI and achieve accurate and precise ADC measurements in the prostate. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - February 13, 2024 Category: Materials Science Source Type: research