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Methods Twenty patients presented with acute heart failure. Echo and cardiac markers (including Troponin, CK, CK-MB) were performed for every patient. Patient’s age ranged from 2 mo-14years. All patients underwent CMRI study. All CMRI studies were scanned using the routine protocol to fulfill the Lake Louise criteria. The performed sequences include: 1.cine stead state free precession in axial and short axis to calculate cardiac function and volumes, 2.T2 TSE in short axis cuts for cardiac edema, the cut off value of >2.3 obtained from the ratio between myocardial muscle to skeletal muscle signals was used, 3. Short axis T1 TSE before and 5 minutes after contrast injection was used as marker of capillary leakage, and delayed myocardial enhancement (LGE) in short axis and four chamber images to show the LGE pattern. Children under 6 years were sedated with chloral hydrate.

CMRI morphological and functional changes of the heart in myocarditis and dilated cardiomyopathy in acute pediatric heart failure