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. 2019 Nov 25;48(8):20190205. doi: 10.1259/dmfr.20190205

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© 2019 The Authors. Published by the British Institute of Radiology

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Figure 10. — Normal coronal anatomy through the pterygopalatine fossa. A coronal bone-window MDCT image (a) shows the PPF (dotted white oval) and its lateral (pterygomaxillary fissure: black arrow) and medial (sphenopalatine foramen: short dotted black arrow) boundaries. The inferior orbital fissure (black trapezoid) and superior orbital fissure (white trapezoid) are also indicated. The descending palatine canal is indicated by a curved, dashed black line. Directly posterior to the PPF, a T₁ weighted MRI image (b) demonstrates the FR (dotted white arrow) containing the V2 nerve and also the Vidian canal (dashed white arrow). The ON (b) is shown in the OC (a) and the NP, SP, MP and the superior and inferior heads of LP (LPs and LPi respectively) are indicated (b). LP: lateral pterygoid; MP: medialpterygoid; NP: nasopharynx; OC: optic canal; ON: optic nerve; SP:soft palate.