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Abstract #1213

Visualization of Pulsatile CSF Motion Separated by Membrane-Like Structure Based on Four-Dimensional Phase-Contrast (4D-PC) Velocity Mapping

Akihiro Hirayama1, Satoshi Yatsushiro2, Hideki Atsumi1, Mitsunori Matsumae1, Kagayaki Kuroda2

1Neurosurgery, Tokai university, Isehara, Kanagawa, Japan; 2Human and information Science, Tokai University, Hiratsuka, Kanagawa, Japan

The 4D-PC is performed in a pulsatile flow phantom and a volunteer with arachnoid cyst to indicate usefulness of 4D-PC technique in assessing pulsatile CSF motion in comparison with Time-SLIP. The phantom was composed of a tube equipped a thin membrane and normal tubes, which poured pulsatile flow generated by the cardiac pump. The waveform anterior to the membrane was resemblance with that posterior to the membrane. However, labeled fluid by Time-SLIP in anterior membrane area showed only a slight displacement. Similar phenomenon was observed within the arachnoid cyst. This technique could indicate propagation of CSF pulsation through the membranous.