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Nasopharyngeal anatomy in the preterm lamb. Computed tomographic images of the snout in a preterm lamb at 129 days gestation. (A) Parasagittal image showing dilatation of the nasal cavity deep within the nasopharynx. Path of nasal CPAP prong indicated by dotted white line (depth 6.5 cm). (B) 3D reconstruction of sagittal CT images; position of CPAP prong tip and epiglottis indicated by black and white arrows, respectively.
