Multislice computed tomography accurately detects stenosis in coronary artery bypass conduits

Cihan Duran, Ertan Sagbas, Baris Caynak, Ilhan Sanisoglu, Belhhan Akpinar, Murat Gulbaran

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The aim of this study was to evaluate the accuracy of multislice computed tomography in detecting graft stenosis or occlusion after coronary artery bypass grafting, using coronary angiography as the standard. From January 2005 through May 2006, 25 patients (19 men and 6 women; mean age, 54 ± 11.3 years) underwent diagnostic investigation of their bypass grafts by multislice computed tomography within 1 month of coronary angiography. The mean time elapsed after coronary artery bypass grafting was 6.2 years. In these 25 patients, we examined 65 bypass conduits (24 arterial and 41 venous) and 171 graft segments (the shaft, proximal anastomosis, and distal anastomosis). Compared with coronary angiography, the segment-based sensitivity, specificity, and positive and negative predictive values of multislice computed tomography in the evaluation of stenosis were 89%, 100%, 100%, and 99%, respectively. The patency rate for multislice computed tomography was 85% (55/65: 3 arterial and 7 venous grafts were occluded), with 100% sensitivity and specificity. From these data, we conclude that multislice computed tomography can accurately evaluate the patency and stenosis of bypass grafts during outpatient follow-up.

Original languageEnglish (US)
Pages (from-to)296-300
Number of pages5
JournalTexas Heart Institute Journal
Issue number3
StatePublished - 2007
Externally publishedYes


  • Coronary angiography
  • Coronary artery bypass
  • Coronary restenosis
  • Graft occlusion, vascular/diagnosis/radiography
  • Graft survival
  • Heart catheterization
  • Image processing, computer-assisted
  • Postoperative period
  • Tomography, spiral computed

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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