The application value of CT coronary plaque quantitative analysis in evaluating myocardial ischemia diagnosis in pa-tients with coronary heart disease

ZHAO Mengyin; WU Jinying; YE Guowei

Abstract：Objective To explore the clinical value of CT quantitative diagnosis of coronary artery plaques in patients with coronary heart disease and myocardial ischemia.Methods A retrospective analysis was conducted on 90 patients with coro-nary heart disease.All patients underwent CT coronary plaque quantification and coronary angiography examination.According to the results of coronary angiography,patients were divided into a non-myocardial ischemia group of 51 cases and a myocardial ischemia group of 39 cases,and the differences in CT coronary artery quantitative examination parameters between the two groups were analyzed.Results In the non-myocardial ischemia group,coronary angiography showed no significant coronary ar-tery variations,with thick and clear branches,natural course,smooth wall,and no obvious localized stenosis.In myocardial ischemia group,coronary angiography showed varying degrees of stenosis,mainly manifested as diffuse mixed plaques or non-calcified plaques on the walls of the main branches with severe stenosis of the lumen.The napkin ring sign and high-risk CT plaques in the myocardial ischemia group were higher than those in the non-myocardial ischemia group,and the PL,CS,PB,DS,and RI indicators were higher than those in the non-myocardial ischemia group,with statistical significance(P<0.05).CT high-risk plaques,PL,PB,and DS had certain predictive value for the diagnosis of myocardial ischemia,with AUC values of 0.598,0.660,0.697,and 0.732,respectively.The AUC value of the joint detection was 0.821,which was higher than the diag-nostic value of a single indicator.Conclusion CT quantitative evaluation of coronary artery plaques has positive significance in the diagnosis of myocardial ischemia in patients with coronary heart disease.This can be analyzed through the combination of plaque quantitative indicators and has promotional value.