Abstract

Objectives: The aim of this study is to determine the prevalence of thyroidea ima artery (TIA) and branching pattern variations of aortic arch among 2000 patients who underwent CECT imaging.

Materials and methods: This retrospective cross-sectional observational study included 2000 patients who underwent CECT of aortic arch and branches during a two years period in a tertiary care centre in South India. The presence of thyroidea ima artery with its origin were identified and the branching patterns of aortic arch were assessed.

Results: TIA was identified in 23 patients, showing a prevalence of 1.15%. The normal branching pattern of aortic arch was observed in 1493 patients, and variations in branching pattern were seen in 507 patients. The variations included 342 cases of bovine type arch, 162 left vertebral arteries originating from arch, 16 aberrant right subclavian artery, 10 right sided aortic arch, and 1 double aortic arch.

Conclusion: The identification of TIA and variations in aortic arch branching are crucial, as they can cause complications during neck and thoracic surgeries and endovascular interventions. CECT is a reliable tool to assess the vascular anatomy. Considering the prevalence demonstrated in our study, imaging should be included prior to procedures in order to prevent complications.

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Data Sharing Statement

Funding