Fig. 6From: Brain arteriovenous malformations of the middle cerebral artery region: image characteristics and endovascular treatment based on a new classification systemEVT of a type II BAVM. A CTA shows a BAVM located in the right Sylvian fissure, and the draining vein is varicose. B-C Two-dimensional angiogram (B) and three-dimensional reconstruction angiogram of the right ICA (C) show that the BAVM is supplied by the branches of the M2-3 segments, and the draining vein is varicose. D Superselective angiogram shows that the wedged position has been achieved for the microcatheter (arrow). E Unsubtracted angiogram showing casting Onyx (circle). F: Right ICA angiogram shows that the volume of the BAVM nidus is reduced after EVT, and the draining vein is patent. Abbreviations: BAVM: brain arteriovenous malformation, CTA: computed tomography angiography, EVT: endovascular treatment, ICA: internal carotid artery, MCA: middle cerebral artery, M2-3: second and third segments of the MCA, R: rightBack to article page