Abstract #5027

Improvement of 3D diffusion-prepared MR neurography in the extremities using improved diffusion-sensitized driven-equilibrium (iDSDE) with phase-cycling turbo field echo sequence

Takayuki Sakai¹, Masami Yoneyama², Atsuya Watanabe¹, Iain Ball³, Toshiaki Miyati⁴, and Noriyuki Yanagawa¹

¹Eastern Chiba Medical Center, Chiba, Japan, ²Philips Electronics Japan, Tokyo, Japan, ³Philips Electronics Australia, North Ryde, Australia, ⁴Kanazawa University, Ishikawa, Japan

Diffusion-sensitized driven-equilibrium with phase-cycling T1-turbo field-echo (pc-DSDE) enables the visualization of peripheral nerves. However, pc-DSDE has several problems, such as low image stability, poor reproducibility, and partially remaining venous signals. To solve these problems, we improved DSDE pre-pulse module (iDSDE) including B1-insensitive RF pulse and orthogonally combined motion- and diffusion-sensitized gradient scheme. iDSDE showed better visualization of peripheral nerves without contamination of veins.

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