title: Layer thickness in rotational panoramic radiography: some specific aspects.
abstract: It is customary to define the thickness of the image layer in rotational panoramic radiography along the central ray of the X-ray beam. This results in calculated values which overestimate its thickness, especially in regions where the central ray deviates markedly from orthogonality. A supplementary definition is proposed which considers layer thickness in a direction perpendicular to the central plane of the image layer. This provides values which may be more easily related to the thickness of the object being radiographed. A mathematical approximation for calculations involving the supplementary definition is described and illustrated with numerical examples.
authors.forename: U
authors.initials: U
authors.lastname: Welander
authors.forename: G
authors.initials: G
authors.lastname: Tronje
authors.forename: W D
authors.initials: WD
authors.lastname: McDavid
mesh_terms: D011862:Radiography, Panoramic / Q000379:methods*