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Abstract #0537

Multi b-value Diffusion weighted image Diphase Map (MbDDM) to evaluate cerebrospinal fluid dynamics.

Toshiaki Taoka1,2, Rintaro Ito1,2, Rei Nakamichi2, Toshiki Nakane2, Hisashi Kawai2, and Shinji Naganawa2
1Department of Innovative Biomedical Visualization, Nagoya University, Nagoya, Japan, 2Department of Radiology, Nagoya University, Nagoya, Japan

To visualize the dynamics of cerebrospinal fluid (CSF) motion within the cranium, we evaluated the distribution of the motion-related signal dephasing by CSF on a Multi b-value Diffusion-weighted image Diphase Map (MbDDM). The MbDDM indicated that CSF motion was prominent in areas that included the ventral portion of the posterior fossa, the suprasellar cistern and the Sylvian fissure. Whereas, CSF motion was less in the lateral ventricles and the parietal subarachnoid space, casting doubt on the classical model of CSF dynamics.

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