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

  • Lale P
  • et al.
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Abstract

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.

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Lale, P., Toprak, U., & Kaya, T. (2014). Variations in the Branching Pattern of the Aortic Arch Detected with Computerized Tomography Angiography. Advances in Radiology, 2014, 1–6. https://doi.org/10.1155/2014/969728

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