RT Journal Article
SR Electronic
T1 Persistent Nonfused Segments of the Basilar Artery: Longitudinal versus Axial Nonfusion
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1194
OP 1196
VO 25
IS 7
A1 Brian L. Hoh
A1 James D. Rabinov
A1 Johnny C. Pryor
A1 Joshua A. Hirsch
A1 Elizabeth C. Dooling
A1 Christopher S. Ogilvy
YR 2004
UL http://www.ajnr.org/content/25/7/1194.abstract
AB Summary: Embryologic development of the basilar artery occurs along two axis systems: longitudinal fusion and axial fusion. Longitudinal fusion consists of midline fusion of paired ventral arteries and reflects the simplified pattern of arterial anatomy found in the spinal cord. Axial fusion consists of fusion of the distal basilar artery, which arises from the caudal division of the internal carotid artery, to the midbasilar agenesis to the posterior inferior cerebellar artery termination of the vertebral arteries. Persistent longitudinal nonfusion (or complete duplication) of the basilar artery is very rare, and persistent axial nonfusion is even rarer. We report one case of persistent longitudinal nonfusion of the basilar artery in a 3-year-old boy and a case of persistent axial nonfusion of the basilar artery in a 43-year-old man.