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Fig. 5 | BMC Neurology

Fig. 5

From: Brain arteriovenous malformations of the middle cerebral artery region: image characteristics and endovascular treatment based on a new classification system

Fig. 5

Protection of the draining vein during EVT. A-B Arterial phase angiogram (A) and late arterial phase angiogram (B) of the right ICA show that the BAVM is supplied by the M4 segment, and the BAVM has multiple superficial draining veins (arrowheads). C Superselective angiogram of the microcatheter showing the microcatheter obtained the wedged position. D Right ICA angiogram shows that the primary draining vein is occluded after Onyx casting, and the secondary vein is patent (arrowhead); the picture in the picture shows the casting Onyx. Abbreviations: BAVM: brain arteriovenous malformation, EVT: endovascular treatment, ICA: internal carotid artery, MCA: middle cerebral artery, M4: fourth segment of the MCA, R: right

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