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Abstract #3652

Quantitative susceptibility mapping with separate calculation in water and fat regions

Ryota Sato1, Toru Shirai1, Yo Taniguchi1, Takenori Murase2, Atsushi Kuratani2, Taisei Ueda2, Takashi Tsuneki2, Yoshitaka Bito2, Hisaaki Ochi1, and Yoshihisa Soutome1

1Research and Development Group, Hitachi, Ltd., Tokyo, Japan, 2Healthcare Business Unit, Hitachi, Ltd., Tokyo, Japan

To reduce the calculation error and artifacts of susceptibility in the boundary region between water and fat, a new reconstruction method is presented and applied to a prostate QSM. In the proposed method, susceptibility maps of the water region and the fat region are calculated separately and differently and then combined. Numerical simulation and human prostate imaging using a 3T-MRI are performed to evaluate accuracy and artifacts of the proposed method. The results suggest that the proposed method reduces calculation error and the shading artifacts in the boundary region between water and fat near the prostate.

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