Comparison of the psychophysical properties of various intraoral film and digital systems by means of the perceptibility curve test

K. Yoshiura, U. Welander, W. D. McDavid, G. Li, X. Q. Shi, E. Nakayama, M. Shimizu, K. Okamura, S. Kanda

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Objectives: To compare psychophysical properties of two intraoral films and three digital systems using the perceptibility curve (PC) test. Materials and methods: A test object was used to determine the exposures and exposure differences between the total thickness of the test object and details consisting of holes of increasing depth. The PCs for the two intraoral films, UltraSpeed and EktaSpeed Plus, were constructed employing exposure and exposure differences from dose response functions. Integrals of the PCs were calculated to obtain the psychophysical properties of the two films. Psychophysical properties of the two films were compared with those of the three digital systems published previously (CDR, Dixel and Digora). Results: The PC for the EktaSpeed Plus showed a slightly higher peak than that for the UltraSpeed. Available exposure ranges were comparable. The PC for the EktaSpeed Plus was shifted to the left of the exposure axis indicating its higher sensitivity as compared with UltraSpeed. All three digital systems had narrower but higher peaks compared with the films. The integrals for the digital systems were considerably larger than those for the two film types. Conclusions: All the three digital systems have superior psychophysical properties compared with the two tested films.

Original languageEnglish (US)
Pages (from-to)98-102
Number of pages5
JournalDentomaxillofacial Radiology
Volume33
Issue number2
DOIs
StatePublished - Mar 1 2004

Keywords

  • Digital radiography, dental
  • Perception
  • Radiography, dental

ASJC Scopus subject areas

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

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    Yoshiura, K., Welander, U., McDavid, W. D., Li, G., Shi, X. Q., Nakayama, E., Shimizu, M., Okamura, K., & Kanda, S. (2004). Comparison of the psychophysical properties of various intraoral film and digital systems by means of the perceptibility curve test. Dentomaxillofacial Radiology, 33(2), 98-102. https://doi.org/10.1259/dmfr/29102849