Discussion of analysing coronary artery stenosis by using multislice spiral CT coronary angiography

Objective To dicuss the feasibility of 16-slice spiral CT coronary angiography(MSCTCA)in the diagnosis of coronary artery stenosis.Methods 85 cases underwent both 16-slice spiral CT coronary angiography and selective coronary angiography(SCA),analysed the ability of MSCTCA to display coronary artery segments,and the diagnosis of coronary artery stenosis was compared with the result of SCA,then analysed the accuracy of MSCTCA.Results Coronary artery segments could be visualized by 16-slice spiral CT coronary angiography in 96.7%,477 not narrow segments,119 mild stenosis,191 moderate stenosis and 41 highly stenosis were displayed,the accuracy of all diagnosis was 92.9%,accuracy of normal segments was 99.2%,accuracy of mild stenosis was 65.1%.Regarding the clinically above moderate-degree stenosis(≥50%)as the positive standard,the accuracy,sensitivity and specificity of MSCTCA was 93.1%,90%,97.3%,there were not statistically significant differences among MSCTCA and SCA.Conclusion Good coronary imaging can be acquired by using MSCTCA and the diagnosis is accurate,MSCTCA will be a valuable,safe and noninvasive artery examination for coronary heart diseases screening and follow-up of treatment.