FIG 1. A–F, Matching lesions on proton density–weighted (A), T2-weighted CSE (C) and fast FLAIR (E) images. 1 denotes a population of lesions in the gray matter, extending to the juxtacortical boundary, which are evident on fast FLAIR but not on proton density—or T2-weighted CSE images. These lesions are further demonstrated on the magnified (x2) proton density–weighted (B) T2-weighted CSE (D), and fast FLAIR (F) images. 2 indicates a population of lesions that are less conspicuous on proton density–and T2-weighted CSE images (C). 3 relates to a medium-sized white matter lesion that is obvious on all imaging sequences.