fig 3.
Patient 3: Hemorrhage in CNS vasculitis.
A, Axial SE MR image (550/25) shows T1 bright signal, consistent with hemorrhage in the left putamen (large straight arrow), left insular cortex (curved arrow), and in the region of the right external capsule (small arrows).
B, The corresponding T2-weighted SE image (3000/90) depicts bright signal in the basal ganglia bilaterally and particularly in the right caudate head (large arrow), external capsule (small arrows), and posterior limb, internal capsule (arrowhead). Abnormalities are also present in the thalami, right frontal cortex, and left periatrial white matter. The T2 bright regions are attributable to ischemia or infarction.
C, Angiogram of the right common carotid artery reveals attenuated flow in distal segments of the MCA caused by stenoses in the M1 segment (double arrow) and near the MCA trifurcation (single arrow).
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