TY - JOUR ID - 82802 TI - Comparison of Diagnostic Accuracy between Coronary CT Angiography and Conventional Coronary Angiography JO - Iranian Heart Journal JA - IHA LA - en SN - AU - Nejadbahram, Hanieh AU - Kiavar, Majid AU - Madadi, Shabnam AD - Rajaie Cardiovascular, Medical, and Research Center, Iran University of Medical Sciences, Tehran, IR Iran AD - Cardiovascular Intervention Research Center, Rajaie Cardiovascular, Medical, and Research Center, Iran University of Medical Sciences, Tehran, IR Iran Y1 - 2018 PY - 2018 VL - 19 IS - 1 SP - 30 EP - 36 KW - Coronary CT angiography KW - Conventional Coronary Angiography DO - N2 - Background: Coronary computed tomography angiography (CCTA) is a noninvasive imaging methodwith a high diagnostic value and minimal complications for evaluating coronary arteries.Therefore, in cases with low and moderate probabilities of coronary artery disease, CCTA canbe a good alternative to conventional coronary angiography (CCA). Previous studies with 64-slice CTA have tried to determine its diagnostic accuracy compared with CCA as the goldstandard. In this survey, we compared the results of 256-slice CCTA with CTA.Method: The present cross-sectional descriptive study evaluated 53 patients (36 men) undergoingCCTA and then CCA (except for 4 patients with pervious CCAs). Our primary goal was tocompare the 2 imaging methods for the evaluation of coronary lesions and their runoff.Results: In the coronary artery bypass graft group, the diagnostic accuracy of CCTA for the arterialgraft lesions (left internal mammary artery to left anterior descending) had 72.73% sensitivity,100% specificity, 100% positive predictive value, and 84.2% negative predictive value and itsdiagnostic accuracy for the venous graft lesions had 100% sensitivity, 80% to 100% specificity,80% to 100% positive predictive value, and 66.4% to 100% negative predictive value. Aproposrunoff (adequacy of perfusion), CCTA had 100% sensitivity, 63.64% specificity, 80% positivepredictive value, and 100% negative predictive value in the arterial grafts and 54% to 100%sensitivity and 100% specificity in the venous grafts. In the percutaneous coronary interventiongroup, CCTA had 90% specificity, and 75% positive predictive value, and 0% negativepredictive value in the differentiation of significant from nonsignificant in-stent restenoses.Conclusions: The diagnostic accuracy of CCTA in determining the severity of arterial graft stenosesand their runoff was similar to that reported in previous studies with 64-slice CTA. Strikingly,CCTA had low sensitivity for significant in-stent restenosis. UR - http://journal.iha.org.ir/article_82802.html L1 - http://journal.iha.org.ir/article_82802_ce049571481632dae9f24dd0e17805cf.pdf ER -