501. Diagnostic accuracy of cardiac magnetic resonance tissue tracking technology for differentiating between acute and chronic myocardial infarction
- Author
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Yue Zheng, Yang Hou, Shuang Liu, Jie Zhou, Li Simiao, Yao Song, Xu Dai, Huaibi Huo, and Ting Liu
- Subjects
medicine.medical_specialty ,Tissue tracking ,Receiver operating characteristic ,business.industry ,Strain (injury) ,Steady-state free precession imaging ,medicine.disease ,Internal medicine ,cardiovascular system ,Cardiology ,Medicine ,Original Article ,Radiology, Nuclear Medicine and imaging ,cardiovascular diseases ,Myocardial infarction ,Differential diagnosis ,business ,Prospective cohort study ,Radial stress - Abstract
BACKGROUND: This study aimed to explore the diagnostic accuracy of cardiac magnetic resonance tissue tracking (CMR-TT) technology in the quantitative evaluation of left myocardial infarction for differentiating between acute and chronic myocardial infarction. METHODS: A total of 104 human subjects were enrolled in this prospective study. Among them, 64 healthy subjects and 40 patients with left ventricular myocardial infarction and 7 days and 6 months’ follow-up CMR studies, including steady-state free precession (SSFP) sequence and late gadolinium enhancement MR imaging, were enrolled. The strain parameters of the infarcted myocardium, its corresponding remote segments, and global right ventricular strain were analyzed using tissue tracking technology, and CMR-TT 3D strain parameters in radial, circumferential, and longitudinal directions were obtained. Receiver operating characteristic (ROC) analysis was used to determine the diagnostic accuracy of the CMR-TT strain parameters for discriminating between acute and chronic myocardial infarction. RESULTS: Peak radial strain (RS) of infarcted myocardium increased from 12.99±7.28 to 18.57±6.66 at 6 months (P
- Published
- 2021