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.