Fig. 2From: Measurement and implications of the distance between the sphenopalatine ganglion and nasal mucosa: a neuroimaging studyIllustration of the relation between the nasal cavity and the sphenopalatine fossa (axial plane). In order to reach the SPG, a drug applied intranasally over the sphenopalatine foramen will have to diffuse through mucosa, the sphenopalatine foramen, which is packed with neuro-vascular structures and connective tissue, and the fat tissue filling the sphenopalatine fossa. SPF: sphenopalatine foramen; SPG: sphenopalatine ganglionBack to article page