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Abstract #2528

A retrofit technology for MR Elastography

Tomokazu Numano 1 , Yoshihiko Kawabata 2 , Kazuyuki Mizuhara 3 , Toshikatsu Washio 4 , Junichi Hata 5 , and Kazuhiro Homma 4

1 Radiological Sciences, Tokyo Metropolitan University, Arakawa-ku, Tokyo, Japan, 2 Takashima Seisakusho Co., Ltd., Tokyo, Japan, 3 Tokyo Denki University, Tokyo, Japan, 4 National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan, 5 Graduate School of Medicine Keio University, Tokyo, Japan

In this work we developed a new retrofit MR Elastography (MRE) system consist of a gradient-echo type multiecho MR sequence and a wirelessly synchronized pneumatic vibration system. In the previous work (ISMRM2014, 1686), we introduced the wireless TR synchronization system with a dipole antenna tuned for the RF excitation frequency to make any electrical wiring from the MRI electronics unnecessary. However, the dipole antenna connected to the cable through a hole in the RF shield room, may introduce RF noise into the shield room and cause MR noises. In this study, we replaced the cable by an optical fiber, to prevent the external RF noise enter the magnet room.

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