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Abstract #1129

T2-Weighted Bright Peri-Infarct Edema in Late Reperfused Myocardial Infarction

Iacopo Carbone1, Bahare Saidi1, Manuela Mariyadas2, Ilaria Iampieri3, Marco Francone3, Matthias Friedrich1

1CMR Centre, Montreal Heart Institute, Montreal, Quebec, Canada; 2Department of Internal Medicine II, University of Ulm, Ulm, Germany; 3Department of Radiological, Oncological and Pathological Sciences, "Sapienza", University of Rome, Rome, Italy, Italy

In late-reperfused acute myocardial infarction (AMI) there is always a difference between the area at risk (measured with T2-weighted images) and infarct area (measured with late gadolinium enhancement). 41 patients with with late reperfused (>8hours) AMI were enrolled in the study. The mean difference between AAR and IA after 8hours was 97.25% and did not significantly increased over time. These data indicate that in late-reperfused MI, the edema surrounding infarcted tissue likely represents reversible tissue injury not related to myocardial salvage. These findings have significant implications for the quantification of myocardial salvage by CMR in patients with late refused MI.