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Dentomaxillofacial Radiology, Vol 22, Issue 3 121-126, Copyright © 1993 by British Institute of Radiology

ARTICLES

An evaluation of the Sens-A-Ray digital dental imaging system

D. McDonnell and C. Price
Faculty of Dentistry, University of British Columbia, Vancouver, Canada.

The Sens-A-Ray digital imaging system was compared with group D- and E-speed intraoral radiographic film with respect to resolution, speed and image quality. Using a line-pair plate, resolution was determined to be 10 line-pairs per millimetre. With a constant potential X-ray source, the speed of the system was over three times that of E-speed emulsion and the response of pixel value to exposure was linear. Absorption curves with aluminium showed a similar response to D-speed film. An aluminium foil test object was used to compare the Sens-A-Ray system with both film types. Thirty observers were scored for successful identification of a pattern of holes in the test object. There was little difference between D- and E-speed film groups, and successful identification was significantly reduced with the Sens-A-Ray images when compared with D- and E-speed films.


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H Kitagawa and A. Farman
Effect of beam energy and filtration on the signal-to-noise ratio of the Dexis intraoral X-ray detector
Dentomaxillofac. Radiol., January 1, 2004; 33(1): 21 - 24.
[Abstract] [Full Text] [PDF]


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Copyright © 1993 by the British Institute of Radiology.