PT  - JOURNAL ARTICLE
AU  - Cross, D T
AU  - Allen, B T
TI  - Transient obstruction of the internal carotid artery during angiography.
DP  - 1997 Jun 01
TA  - American Journal of Neuroradiology
PG  - 1186--1188
VI  - 18
IP  - 6
4099  - http://www.ajnr.org/content/18/6/1186.short
4100  - http://www.ajnr.org/content/18/6/1186.full
SO  - Am. J. Neuroradiol.1997 Jun 01; 18
AB  - While performing carotid angiography in a 76-year-old man, we found that the right internal carotid artery repeatedly opened and closed during the examination. The patient experienced no related neurologic events. The explanation, confirmed at surgery, was that a flap associated with an atherosclerotic plaque had acted as a ball valve.