Introduce Shimming Toolbox (
https://shimming‐toolbox.org), an open‐source software package for prototyping new methods and performing static, dynamic, and real‐time B0 shimming as well as B1 shimming experiments.
Shimming Toolbox features various field mapping techniques, manual and automatic masking for the brain and spinal cord, B0 and B1 shimming capabilities accessible through...
Spinal cord gray‐matter imaging is valuable for a number of applications, but remains challenging. The purpose of this work was to compare various MRI protocols at 1.5 T, 3 T, and 7 T for visualizing the gray matter.
In vivo data of the cervical spinal cord were collected from nine different imaging centers. Data processing consisted of automatically segmenting the spinal cord and...
Myelin water fraction (MWF) mapping based on multi‐gradient recalled‐echo (MGRE) imaging has been proposed as an alternative to the conventional multi‐echo‐spin‐echo (MESE) approach. In this work, we performed a comparative study of MESE and MGRE‐derived MWFs in the same subject group.
MESE and MGRE data were acquired in 12 healthy volunteers at 3T.
decay curves were corrected...
Recently, the multi‐echo gradient echo (MGRE) sequence has been proposed for multicomponent
) based myelin water fraction (MWF) mapping. This approach has appeal because it can provide fast whole‐brain coverage, has low specific absorption rate, and short echo spacing. However, the MGRE signal requires correction for accurate MWF mapping, because of its sensitivity to magnetic...
Multiexponential T2 relaxation time measurement in the central nervous system shows a component that originates from water trapped between the lipid bilayers of myelin. This myelin water component is of significant interest as it provides a myelin‐specific MRI signal of value in assessing myelin changes in cerebral white matter in vivo. In this article, the various acquisition and analysis strategies...
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