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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

Noninvasive coronary angiography focusing on calcification: multislice computed tomography compared with magnetic

Christoph Langer1, Andreas Peterschröder, Krista Franzke

  • 1Department of Cardiology, Ruhr University Bochum, Bad Oeynhausen, Germany.

Journal of Computer Assisted Tomography
|April 7, 2009
PubMed

Insights

Multislice computed tomography (MSCT) and magnetic resonance imaging (MRI) were compared for noninvasive coronary angiography. MSCT demonstrated superior accuracy in detecting coronary stenosis, especially in patients with significant calcification.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Medical Diagnostics

Background:

  • Coronary calcification poses a significant challenge for noninvasive coronary angiography (CA) using multislice computed tomography (MSCT).
  • Magnetic resonance imaging (MRI) is often perceived to have limitations in visualizing calcified lesions.

Purpose of the Study:

  • To compare the diagnostic performance of MSCT and MRI for noninvasive coronary angiography.
  • To evaluate the impact of coronary calcifications on the accuracy of both imaging modalities.

Main Methods:

  • Sixty-eight patients underwent both MSCT and MRI for noninvasive CA prior to conventional angiography.
  • Stenosis detection (>=50%) was assessed visually and validated quantitatively.

Main Results:

  • MSCT showed higher patient-based performance (sensitivity 96.2%, specificity 95.2%) than MRI (69.2%, 64.3%).
  • Segment-based results also favored MSCT (sensitivity 74.7%, specificity 97.8%) over MRI (40%, 93.8%).
  • MSCT maintained high accuracy even in patients with advanced calcification (volume score >= 300 microL) and hardening artifacts.

Conclusions:

  • MSCT is a more accurate modality for noninvasive coronary angiography compared to MRI.
  • MRI offers no significant advantages over MSCT in the presence of advanced coronary calcification.
Abstract

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