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FIG 3. A 15-year-old girl test occlusion for a right giant ICA aneurysm. A, Angiogram AP view, injected by left ICA shows late arterial phase. B and C, Early and late venous phases, respectively, demonstrate perfect synchronous venous filling of left hemisphere and territory of right anterior cerebral artery through Acom. D, Arterial phase of the injection through left vertebral artery, AP view, demonstrates excellent cross-filling through Pcom. E and F, Early and late venous phases, respectively, show symmetry of venous filling of vertebrobasilar territory and right MCA territory through the right Pcom. This patient presented a supply of the right internal carotid artery territory via both Acom and Pcom, without venous delay. ICA permanent occlusion was performed at the same time.
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