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Fig. 2C 38-year-old man with normal intracranial arteries. Examples of
digital subtraction angiographic visualization of recurrent artery of Heubner
not visualized with 2D or 3D CT angiography. Left internal carotid artery
injection digital subtraction angiogram in frontal projection shows 0.4-mm
diameter recurrent artery of Heubner (curved arrow) arising from
proximal aspect of left A1 segment of anterior cerebral artery
(arrowhead).