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.
Original language | English (US) |
---|---|
Pages (from-to) | 119-124 |
Number of pages | 6 |
Journal | Dentomaxillofacial Radiology |
Volume | 18 |
Issue number | 3 |
DOIs | |
State | Published - Aug 1989 |
Keywords
- Radiography
- panoramic
ASJC Scopus subject areas
- Otorhinolaryngology
- Radiology Nuclear Medicine and imaging
- Dentistry(all)