Abstract #4547

Improvement of dynamic improved motion-sensitized driven-equilibrium steady-state free precession (dynamic iMSDE SSFP) to visualize the irregular motion of cerebrospinal fluid

Tomohiko Horie¹, Nao Kajihara¹, Shuhei Shibukawa¹, Susumu Takano¹, Toshiki Saitou¹, Tetsu Niwa², Mitsunori Matsumae³, Kagayaki Kuroda⁴, Makoto Obara⁵, Tetsuo Ogino⁵, and Isao Muro⁶

¹Department of Radiology, Tokai University Hospital, Isehara, Japan, ²Department of Radiology, Tokai University School of Medicine, Isehara, Japan, ³Department of Neurosurgery, Tokai University School of Medicine, Isehara, Japan, ⁴Course of Electrical and Electronic Engineering, Graduate School of Engineering, Tokai University, Hiratsuka, Japan, ⁵Healthcare, Philips Electronics Japan Ltd, Shinagawa, Japan, ⁶Department of Radiology, Tokai University Hospital, Hachiouji, Hachiouji, Japan

We reported a new technique to visualize the irregular motion of cerebrospinal fluid (CSF) by using dynamic improved motion-sensitized driven-equilibrium steady-state free precession (dynamic iMSDE SSFP). The purpose of this study was to optimize the sequence parameters of dynamic iMSDE SSFP. As a result, the slow and irregular CSF motions were sensitively detected using the following parameters: T2prepTE: 30 ms, dynamic interval: 700 ms, flow VENC: 1 cm/s and the directions of MSG: 3axes. Therefore, optimized dynamic iMSDE SSFP is suggested to contribute to the diagnosis of various diseases in the CSF space.

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