Table of Contents
Advances in Radiology
Volume 2014 (2014), Article ID 969728, 6 pages
Research Article

Variations in the Branching Pattern of the Aortic Arch Detected with Computerized Tomography Angiography

Department of Radiology, Ankara Numune Training and Research Hospital, Ulku Mahallesi Talatpasa Bulvari No. 5, Altindag, 06100 Ankara, Turkey

Received 8 March 2014; Accepted 4 June 2014; Published 29 June 2014

Academic Editor: Letterio S. Politi

Copyright © 2014 Pasaoglu Lale et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. The aim was to determine the prevalence of aortic arch variations in 881 patients who underwent neck CT angiography for various reasons. Material and Methods. 881 patients were included in the study who had undergone neck CT angiography between 2010 and 2013. Results. Of 881 patients, 770 (87.4%) patients with classic branching pattern of the aortic arch (AA) were observed. Variations in branching pattern were seen in 111 (12.6%) patients. The most common variation was the origination of the left common carotid artery (LCCA) from the brachiocephalic trunk (BCT). This pattern was observed in 64 (7.2%) cases. In 25 (2.8%) cases, the left vertebral artery (LVA) originated directly from the AA between the origin of the LCCA and left subclavian artery (SCA). 17 (1.9%) cases had aberrant right subclavian artery. Three (0.3%) cases showed right aortic arch. Two cases had right aortic arch with aberrant left subclavian artery. Conclusions. Variations in the branching pattern of the AA are not rare. Head and neck surgeons and interventional radiologists should be aware of aortic arch variations. CTA is a reliable imaging method for demonstrating anatomical features and variations of the AA.