Myocardial T1 Mapping Using Single-Shot Inversion-Recovery Radial FLASH: Comparison of Subspace and Nonlinear Model-Based Reconstruction

Linear subspace-based models are a powerful method for reconstruction in quantitative magnetic resonance imaging (qMRI). Compared to nonlinear model-based reconstructions, they are computationally more efficient and avoid partial volume effects. Both methods have not yet been compared with respect to myocardial T1 mapping using single-shot inversion-recovery radial FLASH. This work quantitatively compares the two methods for different regularization parameters. Reconstruction quality and T1 maps of both methods are comparable.