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Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
04:40

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Published on: August 28, 2018

Prevalence and morphology of coronary artery ectasia with dual-source CT coronary angiography

Sebastian Leschka1, Paul Stolzmann, Hans Scheffel

  • 1Institute of Diagnostic Radiology, University Hospital Zurich, Raemistrasse 100, 8091, Zurich, Switzerland.

European Radiology
|July 22, 2008
PubMed

Insights

Coronary artery ectasia (CAE) prevalence is approximately 3% when assessed by CT coronary angiography (CTCA). CTCA measurements of CAE diameter and contrast attenuation correlate well with conventional catheterangiography (CCA) findings and flow alterations.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Interventional Cardiology

Background:

  • Coronary artery ectasia (CAE) is a dilation of coronary arteries.
  • Accurate assessment of CAE prevalence and characteristics is crucial for understanding its clinical implications.

Purpose of the Study:

  • To evaluate the prevalence and morphological features of CAE using CT coronary angiography (CTCA).
  • To compare CTCA findings with conventional catheterangiography (CCA) for diameter measurements and contrast attenuation.

Main Methods:

  • Retrospective analysis of 677 patients undergoing dual-source CTCA.
  • CAE defined as a diameter enlargement ≥1.5 times adjacent normal segments.
  • Comparison of CTCA measurements with CCA and thrombolysis in myocardial infarction (TIMI) frame count for flow velocity.

Main Results:

  • CTCA identified CAE in 3% of patients.
  • CTCA diameter measurements showed significant correlation with CCA (r=0.92, p<0.001).
  • Lower contrast attenuation in ectatic segments correlated with CAE ratio and TIMI frame count, indicating flow alterations.

Conclusions:

  • CTCA is a reliable method for assessing CAE prevalence and morphology.
  • Contrast attenuation on CTCA reflects altered coronary blood flow in ectatic segments.
  • CTCA offers valuable insights into CAE characteristics comparable to conventional methods.

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