Fig. 2. 70-year-old female with left SC-I.

A. DWI shows about 2.5 cm-sized acute SC-I in left basal ganglia and corona radiata. B. On TOF-MRA, left M1 segment of MCA shows luminal irregularity with mild stenosis (arrow). C-F. HR-VWI, including T1WI (C), PDI (D), T2WI (E), and CE-T1WI (F), demonstrates eccentric wall thickening of stenotic portion of left M1 segment, indicating atherosclerotic plaque (arrows). Note focal intraplaque T2-HSI on T2WI and contrast enhancement of plaque on CE-T1WI (arrows), suggesting plaque vulnerability. CE-T1W1 = contrast-enhanced T1WI, DWI = diffusion-weighted imaging, HR-VWI = high-resolution vessel wall imaging, MRA = MR angiography, PDI = proton density imaging, TOF = time-of-flight, T1W1 = T1weighted imaging, T2WI = T2-weighted imaging, T2-HSI = T2-high signal intensity