Abstract #2383

Investigation of Cardiac- and Respiratory-driven CSF Motions using Asynchronous Phase Contrast with Frequency Analysis

Satoshi Yatsushiro¹, Tomohiko Horie², Mitsunori Matsumae³, and Kagayaki Kuroda¹

¹Department of Human and Information Science, Tokai University, Hiratsuka, Japan, ²Department of Radiological Technology, Tokai University Hospital, Isehara, Japan, ³Department of Neurosurgery, Tokai University, Isehara, Japan

To investigate cardiac- and respiratory-driven CSF motions in the intracranial space, asynchronous phase contrast (Async-PC) imaging with Stockwell transform (ST) and power mapping was conducted for 3 healthy volunteers under free breathing. ST can separate the cardiac- and respiratory-driven CSF motions as spectrogram. Power mapping visualizes the power of the spectrum voxel-by-voxel. Async-PC with ST presented the time-frequency property of the cardiac- and respiratory-driven CSF motions, while that with the power mapping technique visualized the spatial distribution of both the motion contributions. Combination of those techniques may provide new findings related with CSF dynamics.

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