Dose response of a storage phosphor system for intraoral radiography

H. C. Stamatakis, U. Welander, W. D. McDavid

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Objectives: To determine the dose response function for the Digora® (Soredex Orion Corporation, Helsinki, Finland) storage phosphor system for intra-oral radiography. Methods: Specially designed software provided by the manufacturer was used to register data from the pre-scanning that takes place prior to readout. These data contain information about the signal from the photomultiplier and the amplification that forms the basis for the AD conversion to 8 bit image data. Dose response functions were determined for different calibration settings and also combined into one single function. Results: The dose response function is linear irrespective of calibration. The gray levels of the final radiographs are directly proportional to the amplified signal. The Digora® does not fully compensate for exposure differences. Increased exposure results in slightly darker radiographs. Conclusions: Since the gray levels of the final radiographs are directly proportional to the amplified signal, the gray levels may be used as a relative measure of the exposure in the Digora® system provided that they are subtracted from the maximum value of 255.

Original languageEnglish (US)
Pages (from-to)272-276
Number of pages5
JournalDentomaxillofacial Radiology
Volume28
Issue number5
DOIs
StatePublished - Jan 1 1999

Keywords

  • Digital radiography, dental
  • Radiography, dental
  • Technology, radiologic

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Radiology Nuclear Medicine and imaging
  • Dentistry(all)

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