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Abstract #2635

Enhancing Referenceless Phase Sensitive Reconstruction using Geometry Based B0 simulation

Jinnan Wang 1 , Rene Bastkowski 2 , Jeffrey H Maki 3 , Chun Yuan 3 , and Peter Boernert 4

1 Philips Reserach North America, Seattle, WA, United States, 2 Philips Reserach Europe, Hamburg, Germany, 3 University of Washington, Seattle, WA, United States, 4 Philips Research Europe, Hamburg, Germany

Referenceless Acquisition of Phase-sensitive Inversion-recovery with Decisive reconstruction (RAPID) imaging was recently proposed, as a time-efficient alternative to the Phase Sensitive Inversion Recovery (PSIR), to reconstruct phase-sensitive images without the need for reference acquisitions. RAPID achieves phase sensitive reconstruction by eliminating the background phase variations (largely introduced by B0 variations) and restoring the underlining phase change introduced by magnetization polarities. The RAPID algorithm, however, may be subject to errors when the image SNR is low and/or the underlining B0 change is severe. Encouraged by recent advancements in water-fat imaging, a geometry based B0 estimation algorithm is incorporated into RAPID to help mitigate these B0-related phase changes and potentially improve the robustness of RAPID algorithm.

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