FIG 2. 24-year-old woman with cerebellar vermian AVM.

A, Conventional angiogram shows a nidus of an AVM fed by the superior cerebellar artery draining to the vein of Galen.

B and C, MR DSA images (5/2.3/1) in the sagittal plane clearly show each component of the AVM (feeder = 3, nidus = 3, drainer = 3).