Abstract #0485

Navigator-Gated T2 and T2*-Weighted Imaging of Myocardial Edema and Hemorrhage Following Primary Coronary Intervention

Declan Patrick O'Regan¹, Rizwan Ahmed², Giuliana Durighel¹, Amy McGuinness¹, Jo V. Hajnal¹, Stuart A. Cook²

¹Robert Steiner MRI Unit, Imaging Sciences Department, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College London, London, UK; ²Molecular Cardiology Group, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College London, London, UK

We assessed the feasibility of using T2* mapping to quantify regions of myocardial hemorrhage following percutaneous primary coronary intervention (PPCI) for acute myocardial infarction. We also assessed myocardial edema imaging using a T2-weighted asymmetric turbo spin echo with spectrally-selective inversion recovery (SPIR) fat suppression. To reduce respiratory motion artifact and ghosting from the blood pool we used navigator gating and a black blood prepulse in both sequences. Our findings show that hemorrhage is frequently observed following PPCI and is an indicator of poor myocardial salvage.