Figure 4
From: Alterations of cerebral perfusion in asymptomatic internal carotid artery steno-occlusive disease
MR images obtained from a 57-year-old male patient with asymptomatic ICA steno-occlusive disease (>95% stenosis in the right ICA and 10–30% stenosis in the left ICA). (A) Time-of-flight angiography. Projection view from below. (B) From top to bottom rows (3 slices are shown in radiological convention): FLAIR images, CBF maps (in units of ml-blood/100 ml-tissue/min), ATT maps (in units of sec), and flow territory maps. Flow territory maps show the membership levels generated by fuzzy clustering, which range from 0 to 1. No contribution from right ICA was extractable. In FLAIR images, there are bilateral confluent periventricular white matter hyperintensities which are larger on the right side.
