The Value Of Dual-source CT Coronary Angiography In The Diagnosis Of Coronary Heart Disease

Objective: Comparison of the results has to do dual-source CT coronary angiography(DSCT)and coronary angiography(CAG)examination of the patient,to the CAG results as the gold standard,to explore the accuracy of the dual-source CT in the diagnosis of coronary artery stenosis degree and evaluation of two kinds of inspection methods in the role of myocardial bridge detection,analysis and discuss the value of DSCT in the diagnosis of coronary heart disease.Methods: Collected between June 2014 to December 2015,to a patient in our hospital for treatment of cardiovascular medicine,enrolled patients with clinical manifestations and laboratory test results,select stable patients with suspected coronary heart disease 80 cases,including 58 cases of male,female 22 cases,with an average age of 63.50 years.These patients 7-14 days(average 11.3 days)has received dual-source CT coronary angiography and coronary angiography in our hospital,compared with the CAG and DSCT data,evaluate the accuracy of the dual-source CT in the diagnosis of coronary artery stenosis degree and evaluation of two kinds of inspection methods in the role of myocardial bridge detection.Results: Dual-source CT coronary artery imaging of 80 cases of coronary artery of section 1240,of which 25 segments of blood vessels due to anatomical variations or enhancement diameter is too small to be ruled out,the remaining 1215 period of vascular segment DSCT imaging image quality is good,can be used for the evaluation experiment.1.Detection of DSCT stenosis degree of sensitivity,specificity,positive predictive value and negative predictive value are higher,in the narrow degree of above moderate lesions,DSCT detection sensitivity of 95.1%,specificity of 99.6%,positive predictive value 96.7%,negative predictive value of 99.5%.2.80 DSCT detection in patients with myocardial bridge 14 cases,10 cases of the CAG detection,DSCT detection rate was 17.5%,the CAG was 17.5%,there was no statistically significant difference between the two(P > 0.05).Conclusion: 1.DSCT and evaluation of the CAG stenosis degree with good consistency,can be used as a clinical screening of coronary heart disease(CHD).2.DSCT coronary artery imaging of LAD,LCX,RCA stenosis degree evaluation difference has no statistical significance(P > 0.05).3.DSCT detection rate and the CAG on myocardial bridge the differences of no statistical significance(P > 0.05),can be used as a clinical diagnosis of myocardial bridge method.