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- Title
Diagnostic performance of 320-slice multidetector computed tomography coronary angiography in patients after coronary artery bypass grafting.
- Authors
de Graaf FR; van Velzen JE; Witkowska AJ; Schuijf JD; van der Bijl N; Kroft LJ; de Roos A; Reiber JH; Bax JJ; de Grooth GJ; Jukema JW; van der Wall EE; de Graaf, Fleur R; van Velzen, Joëlla E; Witkowska, Agnieszka J; Schuijf, Joanne D; van der Bijl, Noortje; Kroft, Lucia J; de Roos, Albert; Reiber, Johan H C
- Abstract
<bold>Objectives: </bold>To evaluate the diagnostic performance of 320-slice computed tomography coronary angiography (CTA) in the evaluation of patients with prior coronary artery bypass grafting (CABG). Invasive coronary angiography (ICA) served as the standard of reference, using a quantitative approach.<bold>Methods: </bold>CTA studies were performed using CT equipment with 320 detector-rows, each 0.5 mm wide, and a gantry rotation time of 0.35 s. All grafts, recipient and nongrafted vessels were deemed interpretable or uninterpretable. The presence of significant (≥50%) stenosis and occlusion were determined on vessel and patient basis. Results were compared to ICA using quantitative coronary angiography.<bold>Results: </bold>A total of 40 patients (28 men, 76 ± 15 years), with 89 grafts, were included in the study. On a graft analysis, the sensitivity, specificity, positive and negative predictive values in the evaluation of significant stenosis were 96%, 92%, 83% and 98% respectively. The diagnostic accuracy for the assessment of recipient and nongrafted vessels was 89% and 80%, respectively. The diagnostic accuracy for the assessment of graft, recipient and nongrafted vessel occlusion was 96%, 92% and 100%, respectively.<bold>Conclusions: </bold>320-slice CTA allows accurate non-invasive assessment of significant graft, recipient vessel and nongrafted vessel stenosis in patients with prior CABG.
- Publication
European Radiology, 2011, Vol 21, Issue 11, p2285
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-011-2192-5