There is slight hyperintensity on DWI, which proved to be T2-shine through (not true restricted diffusion) in a portion of the arterial territory of PICA on the right. Hyperintensity is noted on the axial FSE T2-weighted scan in this region, with only subtle increased signal intensity on the coronal FLAIR. On the post-contrast coronal scan there is enhancement of the associated gyri, somewhat wedge shaped in appearance and predominantly involving gray matter.

Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)