| Objective Retrospective analysis of two kinds of dual-source64-slice spiral CT(DSCT) and coronary angiography (CAG) method of diagnosing coronary arterydisease.Methods From August2010to2010December,180cases of coronary heart diseasepatients who checked by DSCT and CAG among4-28days, and CAG via the femoralor radial artery intubation. DSCT results was compared with CAG results forcontrolled study. The plaque type and their distribution, coronary stenosis, the numberof diseased vessels and myocardial bridge was registered, and the results of DSCTwas contrasted with the results of CAG.. Age and coronary artery site and degree ofstenosis and plaque type and calcification score for DSCT diagnostic value wasObserved.Results1. A total of2700coronary segments was checked among180patients, thenumber of2646coronary segments was to be able evaluated by DSCT, accountingfor98%in total.847of plaque was checked out by DSCT,186(21.9%) in calcifiedplaque,89(10.5%) in non-calcified plaque,511(60.3%) in mixed plaques and61(7.2%) in soft plaque.2. The diagnostic value of plaque for the sensitivity,specificity, positive predictive value, negative predictive value, and the coincidencerate were different from different patches（P=0.001）,72.9percent is total coincidencerate.3. The differences, which included sensitivity and specificity and positivepredictive value and negative predictive value and in line with rate of the diagnosticvalue was observed in different ages(P=0.000),79.4percent is total coincidencerate.4.There were no difference in sensitivity, specificity, positive predictive value,negative predictive value among different degree of stenosis. After180patientswere checked by DSCT and CAG, Coronary artery with mild stenosis:235weredetected by DSCT when255were found by CAG, no statistically significant in twogroups（P=0.795）；Coronary arteries moderately stenosis:81were checked out by DSCT and97were detected with CAG, no difference in two groups（P=0.803）；Coronary arteries severe stenosis:147were detected with DSCT while165werechecked out by CAG, no difference in two groups（P=0.780）；93.25percent is totalcoincidence rate.5. The difference, which included sensitivity, specificity, positivepredictive value, negative predictive value, and the coincidence rate for the DACTdiagnostic was observed in difference Coronary artery stenosis (P=0.000), nosignificant difference among LM and LAD and LCX and RCA (P=1.000), nosignificant difference among OM and DA and PDA(P=0.642), total coincidencerate of94.6%.6. Difference were detected in comparison of rate of different plaque incoronary arteries of lesion, the rate of calcified and mixed plaque was high in thecoronary arteries of lesion.7.25place muscle bridge are found in DSCT while16were detected by CAG,there was no difference in two ways(P=0.058), and totalcoincidence rate of95%.8. No difference in sensitivity and specificity and positivepredictive value and negative predictive value and the coincidence rate were detectedamong the four groups of calcification score, and total coincidence rate of81.7%.Conclusions1. There has a higher compliance rate in DSCT coronary imaging andCAG for coronary artery disease diagnostic value.2. DSCT coronary angiography canbe used for clinical diagnosis of the mural coronary artery.3. The calcium scores arecalculated by DSCT detection of coronary artery may become one of the coronaryheart disease diagnostic indicators, and there is high of calcium scores in line withdiagnostic value.4. The factors, which includes age and Plaque type and coronaryvascular site, may influence diagnostic value of the DSCT. |
