Key result
Aortic arch variations were detected in 12.6% of patients undergoing neck CT angiography, with the most common being the left common carotid artery originating from the brachiocephalic trunk (7.2%).
Observational (n=881)
Aortic arch variations are relatively common (present in 12.6% of patients), highlighting the utility of CT angiography for anatomical mapping prior to surgical or interventional procedures.
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 et al. (2014) conducted an observational in Patients undergoing neck CT angiography (n=881). Neck CT angiography was evaluated on Prevalence of aortic arch variations. Aortic arch variations were detected in 12.6% of patients undergoing neck CT angiography, with the most common being the left common carotid artery originating from the brachiocephalic trunk (7.2%).
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