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. 2003 Jun;24(6):1222–1225.

Fig 5.

Fig 5.

Case 4.

A, Left vertebral angiogram, best frontal projection, shows the basilar tip aneurysm with unfavorable neck-to-fundus ratio.

B, Radiograph of the inflated Hyperform balloon. The balloon is inflated across the neck. The distal part (thick arrow) of the Hyperform balloon is positioned into the left P1 segment, and its proximal part (thin arrow) is positioned into the basilar artery. The balloon conforms easily to both diameters of the basilar and the P1 segment of the left posterior cerebral artery.

C, Left vertebral angiogram acquired after the procedure shows occlusion of the aneurysm with patency of both P1 segments.