Dimensional reproduction in direct digital rotational panoramic radiography

William D. McDavid, S. Brent Dove, Ulf Welander, Gunilla Tronje

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


A linear x-ray detector array can be used to perform rotational panoramic radiography provided a technique for data acquisition is used that emulates the dimensional reproduction of a conventional rotational panoramic radiographic system. This may be accomplished with the use of a variable integration time throughout the excursion. The required interval depends upon the scanning geometry, the selected image plane, and the size of pixels used in the digital image. In a prototype device developed around an Orthopantomograph Model OP10 with 0.225 mm square pixels, the integration times range from about 8 milliseconds to 28 milliseconds. An experimental test was performed by radiographing a number of steel spheres positioned at different object depths. Within the limits of experimental error, there was satisfactory agreement between the measured and theoretical magnification.

Original languageEnglish (US)
Pages (from-to)523-527
Number of pages5
JournalOral Surgery, Oral Medicine, Oral Pathology
Issue number4
StatePublished - Apr 1993

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Dentistry(all)


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