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Fig. 1 | BMC Neurology

Fig. 1

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

Fig. 1

Classification of MCA-BAVMs. A Type I BAVM. Three-dimensional angiogram (left) and two-dimensional angiogram (right) of the ICA show that the BAVM above the MCA trunk is supplied by the LSA of the M1 segment. The arrowhead indicates the superficial draining vein. B Type II BAVM. Arterial phase (left) and late arterial phase (right) angiograms of the ICA showing the BAVM in the Sylvian fissure supplied by the branches of the M2-3 segments. Arrowheads indicate multiple superficial draining veins. C Type IIIa BAVM. ICA angiograms of anteroposterior view (left) and lateral view (right) show that the BAVM in the parietal lobe supplied only by the termination of the M4 segment. The arrowhead indicates a superficial draining vein. D Type IIIa BAVM. ICA angiogram (left) and vertebral artery angiogram (right) show that the BAVM in the temporal lobe is supplied only by the temporal branch of the M4 segment. E Type IIIb BAVM. Lateral view (left) and anteroposterior view (right) of the ICA angiograms show that the BAVM is supplied by both the AchA and M4 segment. The arrowhead indicates the deep draining vein. F Type IIIb BAVM. ICA angiogram (left) and external carotid artery (right) angiogram show that the BAVM is supplied by the MCA and MMA. Abbreviations: AchA, anterior choroidal artery, BAVM: brain arteriovenous malformation, ICA: internal carotid artery, LSA: lenticulostriate artery, MCA: middle cerebral artery, M1-4: first-fourth segments of  the MCA, MMA: middle meningeal artery

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BMC Neurology

ISSN: 1471-2377

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