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FIG 2. A, Medium-sized AVM involving the left cerebellar hemisphere. The lesion gets its arterial supply via the left posterior inferior cerebellar artery (PICA). Large draining veins are exhibited in the early angiographic phase (arrows).
B, Three-dimensional image of the lesion depicts the malformation filled with color signals (curved arrow). A tortuous and hypertrophic feeder (straight arrow), representing the enlarged PICA, emerges from the basilar artery (open arrow).
C, Spectral Doppler samples reveal venous flow within a draining vessel adjacent to the PICA (arrow).
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