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Abstract #2869

Fast Image Reconstruction in the Presence of Dynamic Higher-Order Fields

Bertram Jakob Wilm1, Christoph Barmet1, Klaas Paul Pruessmann1

1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland

MRI in the presence of higher-order fields poses a complex reconstruction problem. An accelerated algebraic reconstruction approach is proposed by expanding the higher-order field terms into a weighted sum of optimized basis functions. Thereby image reconstruction can be performed by utilizing the computational efficiency of Fast Fourier Transforms. Acceleration by orders of magnitude is achieved with a minimal loss in computational accuracy.