Objective To investigate the value of CT feature tracking in evaluating left ventricular myocardial strain in chronic heart failure(CHF).Methods Fifty-three CHF patients treated at Quzhou Traditional Chinese Medicine Hospital from June 2021 to May 2022 were selected as CHF group,and 50 age-matched healthy people who underwent physical examination at the same time were selected as control group.All subjects underwent coronary CT angiography(CCTA)and cardiac magnetic resonance(CMR)to obtain left ventricular function parameters[including left ventricular end-systolic volume(LVESV),left ventricular end-diastolic volume(LVEDV),left ventricular stroke volume(LVSV),left ventricular ejection fraction(LVEF)]and myocardial strain parameters[including global peak radial strain(GPRS),global peak longitudinal strain(GPLS),global peak circumferential strain(GPCS)].The cardiac function parameters and myocardial strain parameters measured by CCTA were compared between the two groups.Pearson correlation was used to analyze the correlation between myocardial strain parameters and cardiac function parameters measured by CCTA,and the cardiac function parameters and myocardial strain parameters measured by CCTA and CMR in CHF patients were compared.The consistency of myocardial strain parameters measured by CCTA and CMR was verified.Results LVSV,LVEF and GPRS in CHF group were significantly lower than those in the control group(all P＜0.01),while LVESV,LVEDV,GPCS and GPLS were significantly higher than those in the control group(all P＜0.01).GPRS was positively correlated with LVSV and LVEF(both P＜0.05),and negatively correlated with LVESV and LVEDV(both P＜0.01).GPCS and GPLS were negatively correlated with LVSV and LVEF(all P＜0.01),and positively correlated with LVESV and LVEDV(all P＜0.01).LVSV measured by CCTA was significantly lower than that measured by CMR(P＜0.01).LVESV,LVEDV,and GPRS measured by CCTA were significantly higher than those measured by CMR(all P＜0.05).There was no significant difference in LVEF,GPCS,and GPLS measured by the two methods(all P＞0.05).GPCS and GPLS measured by CCTA and CMR had good consistency,while the consistency of GPRS is poor.Conclusion It is feasible to evaluate left ventricular myocardial strain in CHF based on CT feature tracking,which is in good agreement with CMR measurement results.
万方数据
维普
