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FIG 3. Patient 4: 15-year-old girl with left hemiparesis. In this case, carotid occlusive disease could not be distinguished from stenosis, and the extent and severity of occlusive disease were overestimated by MR angiography.
A, Axial proton density–weighted image shows watershed infarcts.
B, Coronal MIP from MR angiography acquired at 0.5 T provides poor delineation of the circle of Willis and ICA.
C, Anteroposterior projection shows supraclinoid ICA is of smaller caliber than the A1 and M1 segments, indicating stenosis. The left ICA was occluded.
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