Fig 1.

Left vertebral artery anteroposterior angiograms. A, Small, shallow, broad-neck aneurysm at a nonbranching point on the distal basilar artery (arrow), which was not present on the initial CTA, considered a blister aneurysm. B, Control angiogram after a single PED deployment into the left posterior cerebral artery shows persistent filling of the aneurysm, but there was increased stasis on the rotational angiogram (not shown). Note the contrast washout in the basilar artery. C, Two-month follow-up angiogram shows complete occlusion of the aneurysm and reconstruction of the parent vessel, with patency of the covered arteries.