Fig. 3
Images of intraoperative cerebral angiography. Right oblique projection of the radiographic image showed double-balloon flow restoration with a balloon-guided catheter placed at the internal carotid artery (ICA) (white arrow) and balloon catheter at the ICA-ophthalmic artery (OA) bifurcation (black arrow). Moreover, the framing coil was placed from the microcatheter in the OA (A). Lateral projection of the radiographic image (B) and left internal carotid arteriography (C) revealed that the compact coil mass was finally placed at the short segment at the origin of the OA. Lateral projection of the common carotid arteriography showed no prograde flow from the ICA into the OA, and the proximal segment of the OA and the central retinal artery (black arrowhead) (D) were retrogradely supplied from the recurrent meningeal artery from the middle meningeal artery. Further, the retinal crescent (asterisk) was detected (E)