TY - JOUR T1 - Carotid-vertebrobasilar anastomosis: magnetic resonance and computed tomographic angiographic demonstration. A1 - Uchino,Akira, Y1 - 2019/06/18/ PY - 2019/01/19/received PY - 2019/06/11/accepted PY - 2019/6/20/pubmed PY - 2019/12/4/medline PY - 2019/6/20/entrez KW - Carotid-vertebrobasilar anastomosis KW - Cerebral arterial variations KW - Persistent hypoglossal artery KW - Persistent trigeminal artery KW - Proatlantal artery SP - 565 EP - 578 JF - Japanese journal of radiology JO - Jpn J Radiol VL - 37 IS - 8 N2 - Carotid-vertebrobasilar (VB) anastomoses are rare and usually found incidentally, but they can have clinical significance. Their variance can represent aneurysm formation at the origin of the anomalous artery, cerebral ischemia due to unique blood flow, or other complications. Thus, recognition and correct diagnosis of these anomalous vessels are important when interpreting magnetic resonance (MR) and computed tomography (CT) angiography. This pictorial essay presents MR and CT angiographic images of several types of persistent fetal carotid-VB anastomoses, including those involving the proatlantal, hypoglossal, and trigeminal arteries as well as their variants. Images depict types 1 and 2 proatlantal arteries, persistent second cervical intersegmental artery, persistent hypoglossal artery (PHA), PHA of external carotid origin, two types of the PHA variant, posterior inferior cerebellar artery arising from the jugular branch of the ascending pharyngeal artery, lateral and medial types of persistent trigeminal arteries (PTAs), and four types of PTA variants. SN - 1867-108X UR - https://www.unboundmedicine.com/medline/citation/31214937/Carotid_vertebrobasilar_anastomosis:_magnetic_resonance_and_computed_tomographic_angiographic_demonstration_ DB - PRIME DP - Unbound Medicine ER -