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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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