Abstract #3181
FOREGROUND FIELD REMOVAL IMPROVES QUANTITATIVE SUSCEPTIBILITY MAPPING
Job G Bouwman 1 and P R Seevinck 2
1
Image Sciences Institute, University Medical
Center, Utrecht, Utrecht, Netherlands,
2
Image
Sciences Institute, University Medical Center, Utrecht,
Netherlands
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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