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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