title: External bony auditory canal and the tympanic bone. Morphologic properties and influences on the tomographic reproduction.
abstract: The external bony auditory canal is morphologically defined as concerns the shape and calibre in successive plane parallel histologic sections of the petrous bone. The sagittal dimensions and structural appearances of the tympanic bone are demonstrated. The morphologic properties defined constitute a basis for the evaluation of the tomographic image formation in this region.
mesh_terms: D000328:Adult; D000368:Aged; D002508:Cephalometry; D004424:Ear Canal / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008852:Microradiography; D008875:Middle Aged; D013701:Temporal Bone / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D014056:Tomography, X-Ray