A right carotid angiogram revealed delayed filling of the anterior and middle cerebral arteries associated with extreme narrowing of the carotid siphon and the internal carotid artery throughout its length.

• 右颈动脉血管造影显示,前、中脑动脉充盈延迟,此与其颈动脉虹吸部和整个颈内动脉的极端狭窄有关。