Matlab tools for dealing with non-bijective MP2RAGE transfer curves
These matlab functions can be used to translate values in a unified MP2RAGE image into
Using Bloch simulations the expected value of
As seen in the figure below it is now possible to find the correct
Add the entire 2D-lookup-tools-for-MP2RAGE directory to your matlabpath with subdirectories, and make sure you have the required software installed.
Start with the examples: VisualiseB1EffectsExample.m, Simple2DLUTConversionExample.m and DisplayConvertedImagesAndExplain2DLUTExample.m in that order. Or simply run the AllExamplesWithExplanation.m example to run them all. The script ScriptUsedToCreateFiguresInThePaper.m cannot be executed on the example dataset, but illustrates how the figures in [Ref 2] were created. The functions required for the method introduced in [Ref 2] are all located in the func directory. In the SPM_and_CAT12_wrappers directory a number of wrappers to the SPM12 and CAT12 software has been included. These wrappers are used e.g. to project out local curvature from the
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Marques JP, Kober T, Krueger G, Van Der Zwaag W, Van De Moortele PF, Gruetter R. MP2RAGE, a self bias-field corrected sequence for improved segmentation and
$T_1$ -mapping at high field. NeuroImage. 2010 Jan;49(2):1271–81. -
Ruijters L, Lund TE, Vinding MS. Tolerating B1+-inhomogeneity in MP2RAGE-based
$R_1$ -mapping by calculating second contrast that permits previously problematic sequence parameters. Submitted to Magnetic Resonance in Medicine. Preprint avialable on bioRXiv: https://www.biorxiv.org/content/10.1101/2024.04.10.588855v1
Ruijters L, Lund TE, Vinding MS. Tolerating B1+-inhomogeneity in MP2RAGE-based
José P. Marques' MP2RAGE related scripts: https://github.com/JosePMarques/MP2RAGE-related-scripts
SPM12: https://github.com/spm/spm12