ABSTRACT
Objective: To investigate the sensitivity, specificity, positive predictive value, negative predictive value and accuracy of noninvasive coronary artery assessment. Methods: A total of 559 patients with suspected coronary artery disease had undergone noninvasive coronary CT angiography. The 78 patients (55 men and 23 women) had consecutively received a 64-slice multi-detector row CT (MDCT) examination, as well as invasive coronary angiography, within the three months period of the study. The coronary CT angiography was retrospectively reviewed by two radiologists. The degree of coronary stenosis was compared with invasive conventional angiography. Results: The coronary CT angiography of 1,032 segments in 78 patients were evaluated. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of coronary CT angiography for the detection of coronary artery stenosis were 71.1%, 98.4%, 89.4%, 94.7%, and 94.0% respectively. Conclusion: Coronary CT angiography using a 64-slice MDCT implies the reliable detection of coronary artery stenoses with high diagnostic accuracy.