J Stroke.  2024 Sep;26(3):446-449. 10.5853/jos.2024.00129.

Geometry of Terminal Internal Carotid Artery Bifurcation May Be Associated With Middle Cerebral Artery Plaque Ulceration: A Three-Dimensional Rotational Angiography Study

• Leng X
• Ip BY
• Ma SH
• Lui WT
• Ip VH
• Fan FS
• Leung H
• Mok VC
• Yu SC
• Leung TW

• KMID: 2559562
• DOI: http://doi.org/10.5853/jos.2024.00129

Figure

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  Figure 1. Illustration of terminal ICA bifurcation geometry in 2 patients with ulcerative and non-ulcerative MCA-M1 plaques. (A) In a patient with an ulcerative (black arrow) MCA-M1 plaque of 83% luminal stenosis, the diameters of MCA origin, ACA origin, and terminal ICA were 2.04, 2.13, and 3.64 mm, respectively, and the MCA/ACA and MCA/ICA area ratios were 0.92 and 0.31, respectively, with an MCA-ACA angle of 87.7°. (B) In a patient with a non-ulcerative MCA-M1 plaque of 88% luminal stenosis, the diameters of MCA origin, ACA origin, and terminal ICA were 2.71, 2.20, and 3.25 mm, respectively, and the MCA/ACA and MCA/ICA area ratios were 1.52 and 0.70, respectively, with an MCA-ACA angle of 120.5°. ICA, internal carotid artery; MCA, middle cerebral artery; ACA, anterior cerebral artery.

Reference

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