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Abstract #1005

Free-running 3D T1 and T2 myocardial mapping and cine MRI in 3 mins using low-rank non-rigid motion-corrected reconstruction

Andrew Phair1, Gastao Cruz1, Haikun Qi2, René Botnar1, and Claudia Prieto1
1School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2School of Biomedical Engineering, Shanghai Tech University, Shanghai, China


Recent work has enabled the simultaneous acquisition of 3D myocardial T1 and T2 maps with isotropic spatial resolution and cardiac cine images from a ~10-minute scan. Herein, we propose to incorporate non-rigid cardiac motion correction into a dictionary-based low-rank reconstruction scheme, allowing k-space data from all cardiac phases to be included in the reconstruction of any given phase. Reconstructed cine images and T1 and T2 maps with and without motion correction are presented and demonstrate that a reduction to 30% of the acquired k-space data (~3-minute scan) can be achieved while image quality is maintained.

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