title: Evaluation of coronary artery bypass grafts using helical scan computed tomography.
abstract: The patency of coronary artery bypass grafts was evaluated by helical computed tomographic (CT) scan. One hundred forty patients who received an enhanced chest CT scan and a coronary angiography after bypass surgery were studied before discharge at the Fukui Cardiovascular Center. Among them was a total of 398 grafts and 436 anastomoses. For the evaluation of 248 vein grafts, the CT scan showed a 99.5% correct positive ratio and an overall accuracy of 96.4%. In 122 internal thoracic arteries tested, an overall accuracy of 64.7% was obtained. In gastroepiploic artery tests the overall accuracy was 33.3% and in radial artery tests it was 45.5%. Thirty-seven venous sequential anastomoses in 34 grafts and 1 internal thoracic artery sequential anastomosis were also evaluated. In the venous sequential anastomosis, the CT scan showed a 73.0% of accuracy overall. This study showed that the helical CT scan was useful to evaluate graft patency following bypass surgery.
authors.affiliation: Department of Surgery, Fukui Cardiovascular Center, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ueyama
authors.forename: H
authors.initials: H
authors.lastname: Ohashi
authors.forename: Y
authors.initials: Y
authors.lastname: Tsutsumi
authors.forename: T
authors.initials: T
authors.lastname: Kawai
authors.forename: T
authors.initials: T
authors.lastname: Ueda
authors.forename: M
authors.initials: M
authors.lastname: Ohnaka
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D017023:Coronary Angiography; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D014057:Tomography, X-Ray Computed / Q000379:methods*; D016896:Treatment Outcome; D014654:Vascular Patency