Microanatomy of the anterior cerebral artery

Fenestrations of Intracranial Arteries Detected with 3D Rotational Angiography

“…[3][4][5][6] However, with 2D angiography, fenestrations are rarely found: In 2 studies of 5190 and 4500 cerebral angiograms, fenestrations were reported in 0.7% and 0.07%, respectively. 1,7 Apparently, with 2D imaging, most fenestrations are overlooked or are invisible because of over- projecting vessels, preferential flow in 1 limb, or location remote from the region of interest.…”

“…Surgical and anatomic studies indicate that fenestrations of intracranial arteries occur commonly, especially in the anterior communicating artery (AcomA) complex. [3][4][5][6] Demonstration of fenestrations on conventional angiography is exceptional. Most fenestrations are only visible from 1 specific viewing angle, which is likely not present in the limited available projections of conventional angiography.…”

Fenestrations of Intracranial Arteries

“…[3][4][5] Demonstration of fenestrations with imaging is uncommon. 6,7 Most fenestrations are only visible from a specific viewing angle that is often not provided by conventional angiography or reconstructed cross-sectional imaging.…”

Surgical Management of Complex Middle Cerebral Artery Aneurysms

“…The perforating branches from the anterior cerebral artery may arise from a common trunk, or they may arise as several small branches directed to the medial portion of the anterior perforated substance. 13,14) The anterior perforating arteries originating from the MCA arise from a single common trunk or from several small perforating branches.25,26) These MCA perforators may originate from the most medial portion of the artery, close to its origin (37%), or they may originate from the middle one third of the M1 segment (47%). The remaining (16%) perforating vessels arise from the most lateral portion of M1.…”