Christian Buerger1, Claudia Prieto1, 2, Andrew Peter King1, Tobias Schaeffter1
1Division of Imaging Sciences and Biomedical Engineering, King's College London, London, Westminster, United Kingdom; 2Escuela de Ingeniera, Pontificia Universidad Catlica de Chile, Santiago, Chile
We propose a method to reconstruct motion compensated 3D MRI of the abdomen acquired during free-breathing with nearly 100% scan efficiency. The approach is based on a self-gated Golden-Radial Phase Encoding sampling that allows reconstruction of multiple undersampled 3D images at different respiratory positions. Non-rigid image registrations are employed to combine all images into one high quality motion compensated dataset. The highly efficient technique allows reconstruction of 3D liver MRI with a high isotropic resolution of 1.75mm. Compared to a commonly employed gating technique overall scan time is reduced by 56% while similar image quality is preserved.