Fig. 2From: 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 imagingSchematic images of chosen planes. a to e Dashed circle indicates the point of orientation. a Plane 1 positioned on a plane through the centre of the ocular bulbs; b Plane 2 positioned immediately rostral to the eyes; c Plane 3 positioned on the level of the nasomaxillary aperture, a ‘hook’ (red 1) [38] protruding dorsally from the spiral lamella of the dorsal concha in all horses was used as an anatomical landmark; d Plane 4 positioned on the level of the nasomaxillary aperture, where the ‘hook’ (red 1) [38] starts to extend mediodorsally; e Plane 5 positioned on the level of the infraorbital foramenBack to article page