Quality assurance phantom for digital dental imaging

Peter Mah, W. Doss McDavid, S. Brent Dove

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Objective: The purpose of this research was to develop a simple quality assurance phantom that could be used for the initial calibration and follow-up testing of commercially available intraoral digital imaging systems. Study design: A radiographic phantom was constructed that contains a calibrated step wedge for measuring dose response, an etched pattern of slits in a metallic background for measuring the spatial resolution in line pairs per millimeter, and 2 rows of wells of varying diameter and depth in an acrylic background for contrast-detail analysis. Quality assurance protocols were developed and validated. Results: The quality assurance phantom provides a method of assessing a digital intraoral imaging system by measuring the sensitivity and dynamic range, the contrast/detail detectability and the spatial resolution. Conclusions: This quality assurance phantom can serve as an effective means to calibrate and monitor the performance characteristics of a digital dental intraoral imaging system.

Original languageEnglish (US)
Pages (from-to)632-639
Number of pages8
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology
Volume112
Issue number5
DOIs
StatePublished - Nov 1 2011

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ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology
  • Dentistry(all)

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