Bypass Graft and Native Postanastomotic Coronary Artery Patency: Assessment With Computed Tomography

Daniele Andreini, Gianluca Pontone, Giovanni Ballerini, Erika Bertella, Enrica Nobili, Alessandro Parolari, Mauro Pepi

Research output: Contribution to journalArticle


Background: Multidetector computed tomography has been shown to be useful in the evaluation of coronary artery bypass grafts in previous studies. We studied the accuracy of multidetector computed tomography in the detection of patency and significant stenosis of both grafts and native postanastomotic coronary arteries. Methods: Ninety-six patients with 216 grafts (98 left mammary artery, 8 right mammary artery, 8 radial artery, and 102 venous grafts) were investigated by 16-slice computed tomography. Native postanastomotic coronary arteries were also evaluated. Patients unable to maintain a breath hold of 40 s were excluded. Computed tomography data were compared with the results of conventional angiography. Results: On a segment-based model, the overall feasibility of computed tomography was 98.1% (212 of 216 grafts) for bypass grafts and 93.1% (201 of 216 segments) for postanastomotic coronary arteries. The leading cause of unfeasibility for postanastomotic coronary arteries was the small diameter of the examined vessel (

Original languageEnglish
Pages (from-to)1672-1678
Number of pages7
JournalAnnals of Thoracic Surgery
Issue number5
Publication statusPublished - May 2007

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Surgery

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