Developmental Anatomy of the Distal Vertebral Artery in Relationship to Variants of the Posterior and Lateral Spinal Arterial Systems

• DOI: 10.3174/ajnr.a0498
• Publication Date: 2007-08-15T13:51:07Z
• Authors: F. Siclari; I.M. Burger; J.H.D. Fasel; P. Gailloud
• Keywords: Adult; Male; Radiography; 03 medical and health sciences; 0302 clinical medicine; Adolescent; Humans; Female; Middle Aged; Spine; Vertebral Artery

<b>BACKGROUND AND PURPOSE:</b> A certain number of anatomic variants involving the distal vertebral artery (VA) are explained by variations in size and connection lateral spinal (LSA). This study examined possible role another branch VA, posterior (PSA), development similar vascular variations. <b>MATERIALS METHODS:</b> Four types including C1 C2 origins inferior cerebellar (PICA), duplication aberrant course illustrated 9 angiographic observations. <b>RESULTS:</b> For each type VA variant listed above, examples resulting from LSA PSA could be matched. <b>CONCLUSION:</b> Variation is at origin a set similar, but not identical, to linked LSA.