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Abstract #4035

Optimization of Fat Suppression for 3.0T DWIBS

Tomohiko Horie1, Tesuo Ogino2, Isao Muro1, Taro Takahara3, Hisamoto Moriguchi1, Yutaka Imai1, Kagayaki Kuroda4, Marc Van Cauteren2

1Radiology, Tokai University School of Medicine, Isehara, Kanagawa, Japan; 2Philips Healthcare Asia Pacific, Shinagawa, Tokyo, Japan; 3Radiology, University Medical Center Utrecht, Utrecht, Netherlands; 4Tokai University, Hiratsuka, Kanagawa, Japan

Uniform fat signal suppression is often difficult to achieve in a 3.0 Tesla MR system. DWIBS is a new method of diffusion MRI that suppresses background signal. In DWIBS, residual fat signals due to incomplete fat signal suppression often considerably degrade quality of the images. Therefore, it is essential to improve fat signal suppression methods. We compared five fat suppression methods: STIR, SPAIR, Non preparation method (NP), STIR+SPAIR, and STIR+NP. Combination of two methods demonstrated better fat signal suppression than a single method. In our experiments, when STIR were used with NP, unambiguous fat suppression can be achieved.