3.0T MRI Evaluation Of Myocardial Viability And Ventricular Function In Ischemic Cardiomyopathy

Objective:Discussion3.0T high-field MRI evaluation of myocardial viability inischemic cardiomyopathy and ventricular function.Object and Methods:General information gathering hospitalized patients in ourhospital2013.3-2014.4months, clinical diagnosis of patients with ischemiccardiomyopathy in22patients,17males and5females, age39-71years, mean age56.15±8.92years old.All patients who underwent echocardiography, cardiac MRI,two checks intervals of not more than one week. Ultrasound by parasternal long axis-aortic short axis-apical four-chamber heart-apical two-chamber-the left ventricularshort axis (heart-apex)-nest on the sternum of the aortic arch level-swordtwo-chamber, followed by exploration. Conventional measurement of theatrioventricular cavity diameter and the inner diameter of the aorta, left ventricularejection fraction estimation observe ventricular wall motion.MRI first to usethree-dimensional positioning method positioning, interactive way to complete thehorizontal scanningâ†'false false two-chamberâ†'short axisâ†'four-chamber heartâ†'true two-chamberâ†'true four-chambered heartâ†'basic position after three-chamberheart, etc. structural or movie sequences to select the appropriate scan, depending onthe location of a lesion.1.cardiac morphology examination: black blood sequence:single-shot fast spin-echo sequence (HASTE).2.cardiac function tests: MRI film inany aspect systolic and diastolic phase of the process does not get the same number ofmagnetic resonance imaging in order to playback the heart chamber size, the effect isto produce a cardiac cycle cardiac motion continuous image.Assess overall cardiacfunction, cardiac morphology displayed.3, first-pass myocardial perfusion imaging:check sequence: Including myocardial first-pass perfusion were early, early, middle,late, late.4, myocardial viability checks (checks myocardial delayed enhancement)sequence: Observe the existence of left ventricular focal necrosis.Results:22patients successfully completed examination. Ischemic heart disease weredivided into three categories of conventional ultrasound, MRI examination results aredivided into five categories.22patients in374myocardial segments,echocardiography can accurately probe and ischemic myocardium, MRI was superiorto echocardiography. Conventional echocardiography and MRI detection ofmyocardial infarction in the number of segments statistically significant.Conclusion:1.3.0T cardiac MRI because of its non-invasive, multi-series, multi-parameter characteristics, can make an accurate diagnosis of ischemic heartdisease, and can be clearly demonstrated that the lesion, scope, assess heart function.2.3.0T cardiac MRI can be first-pass perfusion and delayed enhanced MRI ofischemic cardiomyopathy for risk classification and selection of appropriate treatmentplan based on the myocardium.