Abstract：Objective To explore the diagnostic value of cardiovascular magnetic resonance tissue tracking (CMR-TT) technology
and echocardiography in patients with myocardial infarction of coronary heart disease. Methods A total of 82 patients with coronary
heart disease admitted from June 2020 to December 2022 were retrospectively selected as the research subjects (coronary heart
disease group), and 50 volunteers who came to the hospital for health examination at the same time were selected as the control
group. All research subjects were examined by color Doppler echocardiography and CMR-TT. The echocardiography diagnosis
results of 82 patients with coronary heart disease were observed, the differences in left ventricular function indexes [left ventricular
ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV), left ventricular end-systolic volume (LVESV)], myocardial
strain parameters (radial strain, circumferential strain, longitudinal strain) between the coronary heart disease group and the control
group were compared, and the myocardial strain parameters of positive and negative segments of late gadolinium enhancement (LGE)
in patients with coronary heart disease were compared. The diagnostic value of parameters in myocardial segmental infarction was
analyzed by receiver operating characteristic (ROC) curve. Results The sensitivity of color Doppler echocardiography in detecting
myocardial infarction was 89.19%; the LVEF level of patients in coronary heart disease group was significantly lower than that in
the control group, LVEDV and LVESV levels were significantly higher than that in the control group (P<0.05); the ROC curve of
echocardiography showed that the sensitivity of LVEF, LVEDV and LVESV in diagnosing myocardial segmental infarction was
89.0%, 50.0% and 73.2%, and the specificity was 92.0%, 100.0% and 90.0%, respectively (P<0.05). The radial strain of patients in
coronary heart disease group was significantly lower than that in the control group, and the circumferential strain and longitudinal
strain were significantly higher than that in the control group (P<0.05); the radial strain of LGE positive myocardial segment was
significantly lower than LGE negative myocardial segment, and the circumferential strain and longitudinal strain were significantly
higher than LGE negative myocardial segment (P<0.05); the CMR-TT ROC curve showed that the sensitivity of radial strain,
circumferential strain and longitudinal strain in diagnosing myocardial segmental infarction was 90.8%, 90.1% and 95.8%, and the specificity was 100.0%, 100.0% and 90.9%, respectively (P<0.05). Conclusion There are abnormalities in left ventricular function
and myocardial strain parameters in patients with coronary heart disease. Echocardiography and CMR-TT technology both have good
accuracy in diagnosing myocardial infarction in patients with coronary heart disease, but CMR-TT technology has higher diagnostic
value and is worthy of clinical reference.
方秀红a，杨玲玉b，刘兆胜a，吕德勇a. 心脏磁共振组织追踪技术与超声心动图评估冠心病心肌梗死的诊断价值[J]. 中国医疗设备, 2023, 38(9): 129-135.
FANG Xiuhonga, YANG Lingyub, LIU Zhaoshenga, LV Deyonga. Diagnostic Value of CMR-TT and Echocardiography in Patients with Myocardial Infarction
of Coronary Heart Disease. China Medical Devices, 2023, 38(9): 129-135.
