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Illustration of the Forward Model. The k-space data for a given shot lis related to the 3D image volume to be reconstructed, x, through the following operators: (1) image motion, which includes rotations, Rl, through-plane translation, Tz,l, and in-plane translations, Txy,l (2) weighting by the coil sensitivity matrix C (3) Fourier encoding operator F (4) k-space data for the individual shots are created using the undersampling operator Ul.
