Autocalibrating Reconstruction for Non-Bijective Encoding Fields

Ethan M. Johnson¹, John M. Pauly¹

Reconstruction techniques for data encoded by nonlinear, non-bijective magnetic fields have thus far used receive coil array sensitivity maps to resolve the non-bijective-encoding ambiguity. However, if the acquired signals are compared to a pair of calibration signals encoded by a bijective field, the ambiguity can be resolved. From this, a practical autocalibrating method that does not require sensitivity maps can be identified, and an image reconstructed.