磁共振心功能电影序列快速多参数对比评估危重症STEMI患者的扫描技术探索

目的 阐述磁共振心功能电影序列(CINE)在危重症急性ST段抬高型心肌梗死(STEMI)患者扫描及后处理对比分析中的应用价值.方法 选取临床确诊的危重症STEMI患者1例,通过心脏磁共振成像(CMR)序列的快速优化组合,重点对比分析心功能成像序列,分享扫描经验和技术要点.结果 CMR全部检查时间仅为18 min,CIN...

The Exploration of Fast Multi-Parameter Comparative Evaluation of Severe Patients with STEMI by CMR-Cine Sequence

Objective To describe the application value of MRI cardiac function Cine sequence(CINE) in the comparative analysis of scanning and post-processing of critically ill patients with acute ST-segment elevation(STEMI) myocardial infarction. Methods A clinically diagnosed critically ill STEMI patient was selected. Through the rapid optimization and combination of cardiac magnetic resonance(CMR) sequences, the focus was on comparative analysis of cardiac function imaging sequences, and scanning experience and technical points were shared. Results The total examination time of CMR was only 18 minutes. CINE compared with resting state perfusion sequence(rs-PWI) showed myocardial ischemia in the proximal inferior wall of the ventricular septum. It was combined with gadolinium contrast agent delayed enhancement sequence(LGE) to diagnose ventricular septal myocardial infarction with subendocardial microcirculation obstruction, where T;mapping was reviewed to indicate that the microcirculation obstruction is subendocardial hemorrhageT;value is(5.8±0.8)ms]and post-processing analysis of myocardial strain results in radial contraction of the inferior septal wall(-1.93±1.81)%, hoop rotation(1.63±2.34)% is abnormal, and the distal myocardium is moderately compensated. Conclusion CMR cine sequence can noninvasively, rapidly and comprehensively assess the myocardial damage in critically ill STEMI patients, suggesting that clinical direct revascularization(PCI) focuses on the treatment of the anterior descending artery and the culprit blood vessel of the right coronary artery, and pay close attention to the microcirculation after recanalization.