Przydatność badania MR z zastosowaniem techniki Delayed Enhancement do oceny blizny pozawałowej u pacjentów po przebytym zawale mięśnia sercowego, leczonych Przezskórną Angioplastyką Wieńcową

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Background: The aim of this study is to present usefulness of Cardiac Magnetic Resonance late enhancement technique in the assessment of postinfarction scar location, its precise size, and type, as well as in the evaluation of the left ventricular function (EF, EDV, ESV) in patients after myocardial infarction, treated with Primary Percutaneus Coronary Intervention (PPCI). Material/Methods: We analysed a group of 117 patients who underwent myocardial infarction, and were treated with PPCI. CMR with Delayed Enhancement sequence was performed after 6 months with the use of a 1.5 T Signa Excite scanner, surface Coil TORSOPA, and examination techniques including ECG - gated Gradient Echo Breath Hold, ECG - gated Gradient FIESTA Breath Hold, with segmented k-space acquisition and Delayed Enhancement (15 min after i.v. contrast administration). We assessed infarct size and left ventricular function. Results: A highly significant correlation was found between: EF and cardiac magnetic resonance infarct size (the bigger the infarct size, the smaller the EF), EDV and cardiac magnetic resonance infarct size (the bigger the infarct size, the higher the EDV), ESV and cardiac magnetic resonance infarct size (the bigger the infarct size, the higher the ESV). Conclusions: Cardiac Magnetic Resonance with Delayed Enhancement technique is an effective method to assessed the infarct size and the left ventricular function in patients after myocardial infarction, treated with PPCI.