Clinical study of 64-slice CT coronary angiography and coronary angiography

Objective Comparison with coronary angiography,64-slice spiral CT evaluation of coronary artery disease of the accuracy and feasibility.Methods Collected in August 2007-December 2010 in our hospital 64-slice CT coronary angiography and conventional coronary angiography in 80 cases of clinically suspected coronary artery disease in patients with image data.On the results of two methods to study coronary artery,a preliminary study of factors affecting image quality and 64-slice spiral CT coronary atherosclerotic plaque display case,and also compared the coronary atherosclerotic plaque in all branches the distribution.Results 80 cases of coronary angiography 1300 coronary segments(diameter ≥ 1.5mm) image,64SCT provided excellent figure for the 1259 segment for analysis.To assess the rate of 96.8%,3.2% of segments can not be assessed,usually caused by heart rate(law) abnormality 1.9%;was not 230 plaque,calcified plaque in the majority,location before descending the most.Segments based on the accuracy of the calculation 64MSCT,the diagnosis of coronary artery stenosis ≥ 50% sensitivity and 86.0% of lesions.Specificity was 93.3%,84.6% positive predictive value,negative predictive value 93.9%,accuracy was 91.1%.Conclusions 64MSCT coronary angiography is a simple,safe,reliable,small sub-risk noninvasive,high risk of coronary heart disease screening can be used as the preferred method of screening.