Fig. 1From: Comparison of image quality and in vivo appearance of the normal equine nasal cavities and paranasal sinuses in computed tomography and high field (3.0 T) magnetic resonance imagingHead positioning for MRI examination. a Surface coils arranged for positioning (Philips SENSE™ Flex M® and Philips SENSE™ Flex L®; Philips Medical Systems, Best, The Netherlands); b Head positioned on the examination table with surface coils placed around the ROIBack to article page