Journal: Magma (New York, N.y.)
Article Title: Field-cycling imaging yields repeatable brain R 1 dispersion measurement at fields strengths below 0.2 Tesla with optimal fitting routine
doi: 10.1007/s10334-025-01230-w
Figure Lengend Snippet: R 1 mapping results for a single participant. Top right of figure shows the FLAIR image obtained from 3 T MRI and co-registered to FCI image space. Brain maps consist of quantitative maps of R 1 at 0.2 mT (left) and dispersion slope b (right). Maps are shown for each fitting model F1 and S1–S4, with motion correction and denoising applied before fitting. Image contrast contained within R 1 maps can be seen to differentiate between SVD regions (hypointense) and WM and GM regions (hyperintense). Matching histogram distributions of R 1 at 0.2 mT are shown for regions of WMH (black) and WM (red)
Article Snippet: After motion correction, images were denoised using a pretrained denoising convolutional neural network (dnCNN) approach contained within MATLAB, introduced in R2017b [ ].
Techniques: Dispersion