Blurring effects in rotational panoramic radiography

William D. McDavid, Ulf Welander, Charles R. Morris

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A computer model was developed to investigate how accurately conventional expressions for unsharpness and layer thickness in rotational panoramic radiography approximate the situation encountered in real systems in which the rotational center slides and the effective projection radius varies continuously. Comparison of the results of the model with those of the approximate expressions show that the latter predict the unsharpness with a high degree of accuracy except at the center of the layer.

Original languageEnglish (US)
Pages (from-to)111-115
Number of pages5
JournalOral Surgery, Oral Medicine, Oral Pathology
Issue number1
StatePublished - Jan 1982
Externally publishedYes

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Dentistry(all)


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