Diagnostic performance of 320-slice multidetector computed tomography coronary angiography in patients after coronary artery bypass grafting
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Fleur R. de Graaf & Joëlla E. van Velzen & Agnieszka J. Witkowska & Joanne D. Schuijf & Noortje van der Bijl & Lucia J. Kroft & Albert de Roos & Joh
- چاپ و سال / کشور: 2011
Description
Objectives 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. Methods 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. Results A total of 40 patients (28 men, 76پ}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. Conclusions 320-slice CTA allows accurate non-invasive assessment of significant graft, recipient vessel andnongrafted vessel stenosis in patients with prior CABG.
Eur Radiol DOI 10.1007/s00330-011-2192-5 Received: 21 February 2011 / Revised: 5 May 2011 / Accepted: 12 May 2011
