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. 2020 Nov 25;92(4):370–376. doi: 10.1136/jnnp-2020-325027

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Plaque morphology evaluation in three-dimensional rotational angiography. (A–C) Smooth, irregular or ulcerative plaques (thin white arrows). (D) Length and maximum plaque thickness of an MCA plaque. (E and F) Two upstream plaque shoulder angulations of 17° and 61°. (G–I) Maximum plaque burden (thick white arrows) at proximal, middle and distal 1/3 of the MCA lesions. High-grade adjoining branch atheromatous disease was noted in figure parts G and I (arrow heads). (J) A concentric plaque of eccentricity index 0.08. (K) An eccentric plaque of eccentricity index 0.81. MCA, middle cerebral artery.