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Schematic image of ROI selection and circumferential nerve delineation. (A) Axial view of DWI PROPELLER image (b = 500); (B) Schematic image of mandible illustrating the injury site and location of ROIs 1 cm apart from the site in proximo-distal aspect; (C) Coronal T2 Flex ROI of proximal level; (D) Coronal T2 Flex ROI of distal level; DWI, diffusion weighted imaging; PROPELLER, periodically rotating overlapping parallel lines with enhanced reconstruction; ROI, region of interest
