The fMRI results, superimposed on a Turbo Spin Echo inversion recovery image set, show the relation of the motor cortex to a small lesion. Recently, interest has been shown in the application of MRI sequences weighted by the diffusion of water, to the assessment of diseases such as stroke and multiple sclerosis. These images may be processed to calculate maps of the apparent diffusion coefficient, and hence the diffusion tensor. Correct of spatial distortion and calculate the diffusion tensor is performed offline. This may be displayed as a map of relative, or fractional, anisotropy.
Bright pixels represent high anisotropy.