FOREGROUND FIELD REMOVAL IMPROVES QUANTITATIVE SUSCEPTIBILITY MAPPING
Job G Bouwman 1 and P R Seevinck 2
Image Sciences Institute, University Medical
Center, Utrecht, Utrecht, Netherlands,
Sciences Institute, University Medical Center, Utrecht,
Experimental validation of how QSM reconstruction can be
improved by preconditioning the input field, based on a
prior estimate of the underlying susceptibility
distribution. Using prior knowledge, a better
distinction was made between background and foreground
field leading to a more valid dχ-reconstruction.
Moreover, by flattening the input field, less
regularization was needed, leading to sharper results,
less streaking and reduced underestimation.
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