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Related Concept Videos

Aneurysm III: Interprofessional Care01:26

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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Related Experiment Video

Updated: Feb 25, 2026

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Follow-up on Small Abdominal Aortic Aneurysms Using Three Dimensional Ultrasound: Volume Versus Diameter.

Q M Ghulam1, K K Bredahl2, L Lönn3

  • 1Department of Vascular Surgery, Rigshospitalet, University of Copenhagen, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.

European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery
|August 3, 2017
PubMed
Summary

Abdominal aortic aneurysm (AAA) diameter alone is insufficient for rupture risk assessment. Three-dimensional ultrasound (3D-US) revealed that 40% of small AAAs with stable diameter showed volume increase, suggesting 3D-US can supplement AAA surveillance.

Keywords:
AAA surveillanceAbdominal aortic aneurysmAneurysm diameterAneurysm volumeThree dimensional ultrasound

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Area of Science:

  • Vascular Surgery
  • Medical Imaging
  • Aneurysm Research

Background:

  • Abdominal aortic aneurysm (AAA) rupture risk is primarily assessed by diameter, but this metric is inadequate as 10% of ruptures occur in small aneurysms.
  • Current diameter-based surveillance may miss significant aneurysm changes, potentially leading to delayed intervention.

Purpose of the Study:

  • To compare aneurysm diameter with aneurysm volume, determined by three-dimensional ultrasound (3D-US), in assessing small abdominal aortic aneurysms (AAAs).
  • To evaluate the role of 3D-US in identifying changes not apparent by diameter alone in AAA surveillance.

Main Methods:

  • A prospective cohort study involving 179 patients with small infrarenal AAAs (diameter 30-55 mm) was conducted.
  • Maximum diameter and 3D-US determined volume were measured at enrollment and 12-month follow-up.
  • Significant changes were defined by exceeding the known range of variability for each ultrasound technique (±3.7 mm for diameter, ±8.8 mL for volume).

Main Results:

  • In 70% of patients, AAA diameter remained unchanged during follow-up.
  • However, 40% of those with stable diameter exhibited increasing aortic volume.
  • A mean increase in diameter of 2.7 mm and volume of 11.6 mL was recorded over a median follow-up of 367 days.

Conclusions:

  • A significant proportion (40%) of small AAAs with stable diameter demonstrated volume increase at 12 months.
  • These findings suggest that 3D-US can provide supplemental information for AAA surveillance programs.
  • Integrating 3D-US may improve the detection of potentially hazardous aneurysm changes missed by diameter measurements alone.