Feasibility of CT quantitative evaluation for myocardial strain in patients before transcatheter aortic valve replacement
10.3969/j.issn.1009-0126.2023.12.004
- VernacularTitle:CT定量评估经导管主动脉瓣置换术前患者心肌应变的可行性研究
- Author:
Wentao ZHANG
1
;
Zhen ZHOU
;
Yifeng GAO
;
Rui WANG
;
Lei XU
Author Information
1. 100029 首都医科大学附属北京安贞医院医学影像科;张家口市第一医院放射医学科
- Keywords:
transcatheter aortic valve replacement;
tomography,X-ray computed;
magnetic reso-nance imaging;
retrospective studies;
myocardium;
myocardial strain parameters
- From:
Chinese Journal of Geriatric Heart Brain and Vessel Diseases
2023;25(12):1245-1250
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility of CT evaluation of myocardial strain in patients undergoing transcatheter aortic valve replacement(TAVR)with cardiac magnetic resonance(CMR)as the reference standard.Methods A retrospective study was conducted on 43 patients undergoing cardiac CT examination before TAVR in our hospital from June to December 2022.The cardiac CT and CMR data were collected,and myocardial strain parameters were measured.The cardiac function and strain parameters based on cardiac CT were compared with the parame-ters of CMR,including left ventricular ejection fraction(LVEF),left ventricular end-diastolic vol-ume(LVEDV),left ventricular end-systolic volume(LVESV),diastolic myocardial mass(MASS),cardiac output,global peak longitudinal strain(GPLS),global peak circumferential strain(GPCS)and global peak radial strain(GPRS).Results The values of LVEF and cardiac output derived from cardiac CT were close to those from CMR(P＞0.05),while the values of LVEDV,LVESV and MASS from cardiac CT were significantly higher than those from CMR,and those of GPLS,GCPS and GRPS from cardiac CT were obviously lower than those from CMR(P＜0.01).Pearson correlation analysis showed that the LVEF,LVEDV,LVESV,MASS,GCPS and GRPS derived from cardiac CT had strongly positive correlation with those from CMR(r=0.908,r=0.917,r=0.947,r=0.954,r=0.856,r=0.864,P＜0.01),while the cardiac output and GPLS had a moderate positive correlation(r=0.763,r=0.656,P＜0.01).Bland-Altman analysis showed that the LVEF,cardiac output,GPLS,GCPS and GRPS derived from cardiac CT had small biases with those from CMR.Conclusion Cardiac CT quantitative evaluation of cardiac function and strain is feasible in patients undergoing TAVR,and the cardiac function parameters of cardiac CT have good agreement with those from CMR,while the myocardial strain parameters are lower than those from CMR.
