Abstract #1826

Optimal strategy for measuring intraventricular temperature using second-order motion compensation DWI

Shuhei Shibukawa^1,2, Tetsu Niwa³, Naoki Ohno², Toshiaki Miyati², Tomohiko Horie¹, Susumu Takano¹, Nao Kajihara¹, Toshiki Saito¹, Tetsuo Ogino⁴, and Yutaka Imai³

¹Department of Radiology, Tokai university hospital, Isehara, Japan, ²Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan, ³Radiology, Tokai University School of Medicine, Isehara, Japan, ⁴Healthcare department, Philips Electronics Japan, LTD, Japan

A method for monitoring the intraventricular cerebrospinal fluid (CSF) temperature calculated from the DWI is affected by the CSF pulsation. Moreover, DWI should be obtained by optimal b value according to the diffusion coefficient of the measuring tissues. We investigated the second-order motion compensation DWI (2^nd-MC DWI) to the determination of the intraventricular temperature to improve that accuracy with optimal b value. In the case of using the optimal b value based on the literature (ie., approximately 400 s/mm²), the intraventricular temperature can be more accurately estimated with 2^nd-MC DWI than conventional no-motion compensation DWI.

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