Fig. 4
From: A new approach to selective brain cooling by a Ranque-Hilsch vortex tube
Coronal head MRI of a pig before and after intranasal cooling. a, b Coronal fat-suppressed T2-weighted MRI of the nasal cavities (green outlined region of interest (ROI)) before and after 7 h of cooling. c, d Coronal fluid-attenuated inversion recovery (FLAIR) MRI of the nasopharynx (yellow outlined ROI) and the brain before and after 7 h of cooling. e, f Diffusion-weighted imaging (DWI) of the nasopharynx (yellow outlined ROI) and the brain before and after 6 h of cooling. g, h Apparent diffusion coefficient (ADC) maps of the nasopharynx (yellow outlined ROI) before and after 7 h of intranasal cooling