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Noninvasive assessment of coronary artery bypass graft patency by multislice computed tomography

Rosario Rossi1, Emilio Chiurlia, Carlo Ratti

  • 1Department of Cardiology, University of Modena and Reggio Emilia, Italy.

Italian Heart Journal : Official Journal of the Italian Federation of Cardiology
|April 15, 2004
PubMed

Insights

Multislice computed tomography accurately evaluates coronary artery bypass graft patency noninvasively. This method shows potential to replace conventional angiography for follow-up in stable patients.

Area of Science:

  • Cardiovascular Imaging
  • Medical Diagnostics
  • Radiology

Background:

  • Conventional X-ray coronary angiography for coronary artery bypass graft follow-up is invasive, costly, and involves radiation exposure.
  • Multislice computed tomography (CT) offers a noninvasive alternative for visualizing cardiac structures, including coronary arteries.

Purpose of the Study:

  • To compare the diagnostic accuracy of multislice CT with conventional angiography.
  • To evaluate the patency of coronary artery bypass grafts using both imaging modalities.

Main Methods:

  • Retrospective analysis of 47 asymptomatic patients who previously underwent coronary bypass surgery.
  • ECG-gated multislice CT was performed within 6 months of coronary angiography.
  • Graft patency was assessed using both techniques.

Main Results:

  • 91.4% of grafts were assessable by multislice CT.
  • Multislice CT demonstrated 100% sensitivity and specificity in identifying patent and occluded grafts compared to coronary angiography.
  • Coronary angiography revealed 68.1% patent and 31.9% occluded grafts.

Conclusions:

  • Multislice CT with retrospective gating provides accurate, noninvasive assessment of coronary artery bypass graft patency.
  • This CT technique could potentially replace conventional angiography for routine follow-up of asymptomatic, stable patients.
Abstract

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