<prompt> The MR imaging in multiple sclerosis in the following illustration will show lesions in:White matterGrey matterThalamusBasal ganglia  <response>: Ans. A. White matterMultiple sclerosis is a demyelinating disorder. Hence the lesions will be seen in the white matter due to loss of myelin.Sagittal T1-weighted MRI depicts multiple hypointense lesions in the corpus callosum; this finding is characteristic of multiple sclerosis. 