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Changes in the Relative Displacement between the Supra-Aortic Branches with Age
Qiaohao Wan1, Xuemin Zhang1, Xiaoming Zhang1
1Department of Vascular Surgery, Peking University People's Hospital, Beijing, China.
Annals of Vascular Surgery
|July 25, 2022
Summary
The aging process alters aortic arch anatomy, increasing its height and branch displacement. These morphological changes in the aortic arch are influenced by age and sex.
Area of Science:
- Radiology
- Anatomy
- Cardiovascular Imaging
Background:
- Aortic arch morphology and supra-aortic branch distances are crucial anatomical landmarks.
- Establishing normal ranges is essential for interpreting imaging studies in adults without aortic disease.
Purpose of the Study:
- To determine normal ranges for aortic arch height, deflection angle, and supra-aortic branch displacement.
- To investigate the influence of age, sex, BMI, and BSA on these aortic arch parameters.
Main Methods:
- Analysis of non-contrast chest CT scans from 700 adult patients.
- Measurement of aortic arch height and deflection angle relative to the pulmonary artery bifurcation.
- Calculation of supra-aortic branch displacement distances and angles in coronal and sagittal planes using multiple linear regression.
Main Results:
- Aortic arch height was greater in men than women. Both height and deflection angle increased with age.
- Left subclavian artery (LSA) to innominate artery (IA) displacement increased with age.
- Significant correlations were found between age, sex, and aortic arch morphometric parameters.
Conclusions:
- Normal aging leads to significant morphological changes in the aortic arch and supra-aortic branches.
- Understanding these age- and sex-related variations is key for accurate anatomical assessment.
- These findings contribute to a comprehensive understanding of aortic arch anatomy and morphology.
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