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Related Concept Videos

Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...

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Related Experiment Video

Updated: May 18, 2026

Ultrasound Imaging of the Thoracic and Abdominal Aorta in Mice to Determine Aneurysm Dimensions
06:08

Ultrasound Imaging of the Thoracic and Abdominal Aorta in Mice to Determine Aneurysm Dimensions

Published on: March 8, 2019

Reference curves for the aortic area by age.

Li-An Wu1, Chung-I Chang, Jou-Kou Wang

  • 1Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan.

Academic Radiology
|September 12, 2012
PubMed
Summary

This study established reference curves for aortic cross-sectional area in children and young adults. These formulas aid in diagnosing aortic diseases like coarctation by comparing patient measurements to normal values.

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In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
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In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging

Published on: February 25, 2022

Related Experiment Videos

Last Updated: May 18, 2026

Ultrasound Imaging of the Thoracic and Abdominal Aorta in Mice to Determine Aneurysm Dimensions
06:08

Ultrasound Imaging of the Thoracic and Abdominal Aorta in Mice to Determine Aneurysm Dimensions

Published on: March 8, 2019

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
11:16

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging

Published on: February 25, 2022

Area of Science:

  • Cardiovascular imaging
  • Pediatric cardiology
  • Radiology

Background:

  • Accurate aortic cross-sectional area measurements are crucial for diagnosing pediatric aortic diseases.
  • Establishing age- and sex-specific reference values is essential for clinical interpretation.

Purpose of the Study:

  • To create reference curves and formulas for aortic cross-sectional area in individuals from infancy to young adulthood.
  • To provide tools for the early detection and management of aortic conditions.

Main Methods:

  • Retrospective analysis of electrocardiographically gated cardiac computed tomography scans from 65 patients (2 days to 18.1 years).
  • Measurement of aortic cross-sectional area at six key locations in normal controls and patients with coarctation of the aorta.
  • Assessment of interobserver/intraobserver variability, gender differences, and age-related correlations.

Main Results:

  • Aortic cross-sectional area showed a strong correlation with age in normal controls (r > 0.90).
  • No significant gender differences were observed in aortic dimensions.
  • Distinct area ratios to the descending aorta (DAO) were identified for different aortic segments, differentiating normal controls from patients with coarctation.

Conclusions:

  • Aortic area measurement is reproducible and reliable.
  • The developed reference curves, formulas, and minimal area ratios offer practical clinical utility.
  • These tools facilitate the assessment of aortic dimensions and the identification of abnormalities.