Fig 5. Comparison between angiogram and PMP for the location of case 11 (arrows). Both examinations show a transitional aneurysm (neck supracavernous and sac transitional). The PMP depicts a wider supracavernous portion than is suspected on initial DSA. A, DSA of the left ICA in the lateral view. B, DSA of the left ICA in the anterior view. C, PMP in the carotid plane (OL indicates optic line; RL, roof line). D, PMP in the diaphragmatic plane (DL indicates diaphragmatic line; CL, clinoid line).