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Abstract #2974

Continuously visualizing slow flow using SSFP

Koichi Oshio1, Masao Yui2, Seiko Shimizu3, and Shinya Yamada4

1Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan, 2Research and Development Center, Canon Medical Systems Corporation, Ohtawara, Tochigi, Japan, 3National Sales Division, Canon Medical Systems Corporation, Tokyo, Japan, 4Toshiba Rinkan Hospital, Sagamihara, Kanagawa, Japan

A novel technique that can visualize relatively slow flow continously. It is based on SSFP sequence, and gradient pulses are added to introduce spatially linear field gradient. When the steady state is reached, dark bands appear due to the large linear field gradient. When the spins move, these dark band moves following the spin motion, and the flow can be visualized as the motion of the dark bands. Numerical simulation was performed to verify the response to flow, and volunteer images were also taken. It can be a powerful tool to investigate CSF flow.

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