Abstract
The magnification factor can be held constant throughout the exposure of a panoramic radiograph by maintaining the physical centre of rotation equidistant from the central plane of the image layer. This may be accomplished with computer-controlled movement patterns while the effective centre of rotation follows a path selected to provide an optimal projection of the jaws. Theoretical considerations for creation of a constant magnification factor are presented and the practical implementation of the technique in a commercially available device (OrthOralix SD, Philips, Monza, Italy) is described. This technique minimizes distortion in panoramic radiographs and makes horizontal measurements possible in certain selected cases.
Original language | English (US) |
---|---|
Pages (from-to) | 160-168 |
Number of pages | 9 |
Journal | Dentomaxillofacial Radiology |
Volume | 18 |
Issue number | 4 |
DOIs | |
State | Published - Nov 1989 |
Keywords
- Radiography
- panoramic
ASJC Scopus subject areas
- Otorhinolaryngology
- Radiology Nuclear Medicine and imaging
- Dentistry(all)