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British Journal of Radiology (1996) 69, 49-58
© 1996 British Institute of Radiology
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The British Journal of Radiology, Vol 69, Issue 817 49-58, Copyright © 1996 by British Institute of Radiology

ARTICLES

Sensitometric and image quality performance of "rapid" intraoral film processing techniques

J Czajka, VE Rushton, AC Shearer and K Horner
North Western Medical Physics Department, Christie Hospital, Manchester, UK.

A number of products are available to dentists for the rapid production of intraoral radiographic films but there is little information on their relative merits. This study evaluated the performance of five "rapid" film processing products commonly used by British dentists in comparison with standard Kodak manual processing. Two Perspex contrast-detail test objects were made in order to investigate threshold contrast. Film speed, film gradient, limiting resolution and threshold contrast results are presented. Rapid processing systems possessed lower film speed when compared with Kodak Ektaspeed film and standard Kodak processing. The speed of E-speed film was found to be lower than that of D-speed film when used with Westone "Rapid X-ray" processing. Overall image quality was generally similar for all film/processing combinations evaluated, with the exception of Nix QP which gave markedly poorer image quality.




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