Clinically-relevant morphometric parameters and anatomical variations of the aortic arch branching pattern

Area of Science:

• Anatomy
• Radiology
• Cardiovascular Interventions

Background:

• Advances in cardiac and endovascular interventions highlight the importance of aortic arch (AA) anatomy.
• Understanding anatomical variability and morphometric parameters of the AA and its branches is critical for procedural success.

Purpose of the Study:

• To delineate the morphometry and anatomical variations of the aortic arch branches.
• To illustrate correlations between morphometric data and anatomical variations.

Main Methods:

• Evaluation of coronal, axial, and sagittal CT multiplanar reformatted three-dimensional angiograms.
• Detailed analysis of morphometric parameters and branching patterns of the aortic arch.

Main Results:

• 35% of aortic arches exhibited abnormal branching patterns, including "bovine arch" (24%), common ostium variant (6%), and aberrant left vertebral artery (5%).
• Specific measurements for AA diameter, branch origins, outer diameters of branches (BCT, LCCA, LSA), and angles between vessels were recorded.
• Significant correlations were identified between morphometric data and anatomical variations.

Conclusions:

• The study provides essential anatomical variations and morphometric data for the aortic arch.
• This information is vital for patients undergoing aortic endovascular interventions.
• Data aids in selecting appropriate sizes, shapes, and types of angiographic catheters and devices.