Figure 2.

Adult patient in their late 30’s presenting with left-sided weakness. Axial DWI (a), ADC (b), and T2-weighted (c) sequences show subacute infarct involving the right corona radiata (thick arrows). On TOF-MRA coronal MIP reformat (d), there is mild atherosclerotic irregularity of the right M1 MCA (long arrow), and downstream irregular, discontinuous lenticulostriate branches (arrowheads). There are less lenticulostriate branches originating from the right MCA (e) compared to the left (f). Sagittal T1-weighted VWI (g, and zoomed view) shows plaque along the superior wall of the right MCA (black arrow), at expected location of lenticulostriate branch origins.