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Updated: Mar 24, 2026

Ultrasound Imaging of the Thoracic and Abdominal Aorta in Mice to Determine Aneurysm Dimensions
Published on: March 8, 2019
Proximal thoracic aortic diameters: transesophageal-echocardiography- versus computed-tomography-derived measurements
Prachi P Agarwal1, Peter S Liu1, Peter Hagan2
1Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Dr., Ann Arbor, MI 48109.
Purpose:
The purpose of the study was to compare proximal aortic measurements from electrocardiogram-gated computed tomography (CT) to transesophageal echocardiography (TEE) and to evaluate differences in cusp-cusp and cusp-commissure CT measurements of sinus of Valsalva (SOV).
Methods:
This retrospective study (n=25) compared aortic diameters from CT using manual double-oblique multiplanar reformats (MPRs) and semiautomatic centerline method to TEE.
Results:
CT MPR and centerline measurements were higher than TEE for sinotubular junction and ascending aorta. At SOV, cusp-cusp diameters (MPR and centerline methods) and cusp-commissure measurement (centerline method) were larger than TEE.
Conclusions:
Aortic measurements were larger on CT than TEE. Precise difference depended on location and measurement technique.
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