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Abstract #3107

Whole-heart T1 mapping using a 2D fat image navigator with 100% scan efficiency

Giovanna Nordio1, Gastao Cruz1, Claudia Prieto1, Torben Schneider1,2, Rene M. Botnar1, and Markus Henningsson1

1Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom, London, United Kingdom, 2Philips Healthcare, Guildford Surrey, United Kingdom

In this study a whole-heart saturation-recovery T1-mapping technique in combination with a fat image navigator (fat-iNAV) is proposed. Myocardial fat is imaged by the fat-iNAV to estimate respiratory motion. Each of the T1-weighted images are subsequently motion corrected prior to reconstruction of the T1 map. Fat-iNAV motion correction let to an improvement in myocardial borders delineation and accuracy of the myocardial T1 values, while there was a general underestimation of myocardial T1 in the non-motion corrected T1 maps (1115.4±110ms vs 998.6±101ms). Further work will investigate non-rigid motion correction and undersampled reconstruction for T1 mapping.

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