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Abstract #1826

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

Shuhei Shibukawa1,2, 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 (2nd-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 2nd-MC DWI than conventional no-motion compensation DWI.

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