Fig 1From: Cluster headache associated with moyamoyaa Lateral view from a selective right internal carotid angiogram shows occlusion of the supraclinoid ICA with “puff of smoke” from basal collateral vessels. b, d 3-D volume rendered SPECT images prior to surgical intervention demonstrate profound hypoperfusion in the right middle cerebral arterial distribution. c, e Images obtained following STA–MCA bypass show virtually normal and symmetric perfusionBack to article page