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Fig. 3C —54-year-old woman with normal intracranial arteries. Examples of
visualization of anterior choroidal artery with 2D CT angiography and digital
subtraction angiography but not with 3D CT angiography. Digital subtraction
angiogram in lateral oblique projection and midarterial phase shows
0.4-mm-diameter anterior choroidal artery and associated choroidal blush
(arrowheads) arising from dorsal aspect of supraclinoid segment of
internal carotid artery. Origin (arrow) of posterior communicating
artery is inferior in relation to blush.
