Fig. 4
A–C Conventional axial MDCT,MRI images showing vascular lesion at the left crural cistern, with surrounding vasogenic edema. D, E AP, oblique, DSA projections, demonstrating dissecting aneurysm at the left P2 segment with underfilling distal to the aneurysm. F, G AP,LAT, DSA after aneurysmal packing and parent artery occlusion. H, I Six-month follow-up angiogram with partial refilling of the aneurysmal sac through the leptomeningeal collaterals. J, K Follow-up, MRI (showing regression of the aneurysm size and the surrounding edema)