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Updated: Jan 29, 2026

Isolation and Analysis of Aortic Arch and Root Lesions in an Atherosclerotic Mouse Model
Published on: February 14, 2025
Fetal Right Aortic Arch: A Quantitative Method of Outcome Prediction
Ming-Xuan Zhang1, Bo-Wen Zhao1, Mei Pan1
1a Department of Diagnostic Ultrasound and Echocardiography, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine , Hangzhou , China.
Objective:
To investigate right aortic arches (RAA) quantitatively and risk-stratify fetuses with RAA prenatally.
Method:
A total of 143 singleton fetuses were enrolled. Four measurements were studied, including the angle and distance between the aortic arch (AO) and ductal arch (DA), the diameters of the AO and DA, and the distance growth rate (DGR).
Result:
A significant increase in mean distance was observed in the study group (4.89 ± 1.07 mm) compared to the control group (1.62 ± 0.33 mm, p<.01). The distance increased from the second (1.52 ± 0.35 mm, p<.01, 4.06 ± 0.78 mm, p<.01) to third trimester (1.71 ± 0.29 mm, p<.01, 5.13 ± 1.10 mm, p<.01) in the normal and study groups. Fetuses with abnormalities in addition to RAAs had significantly lower growth rates (12.4 ± 5.2%) than those with an isolated RAA (33.7 ± 12.0%).
Conclusion:
Parameters, especially DGR, may be clinically significant. DGR may be restricted when an RAA exists with other malformations. Decreasing DGR in fetuses with RAAs suggests the presence of other malformations.
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