The British Journal of Radiology, Vol 69, Issue 819 256-261, Copyright © 1996 by British Institute of Radiology

ARTICLES

The imaging performance of a storage phosphor system for dental radiography

DS Brettle, A Workman, RP Ellwood, JH Launders, K Horner and RM Davies
North Western Medical Physics Department, Christie Hospital, Manchester, UK.

Direct digital imaging systems are becoming increasingly common in dental radiography. The majority of these systems are based on charge coupled device (CCD) technology. A relatively new system, based on photo-stimulable phosphor luminescence (PSPL), is now commercially available. This system appears to overcome some of the restrictions of CCD systems including those associated with the bulky detector, connecting wire, limited image size and limited exposure latitude. A physical evaluation of the PSPL system was conducted including measurements of sensitometric response, modulation transfer function (MTF), noise power spectrum (NPS), noise equivalent quanta (NEQ) and detective quantum efficiency (DQE). These measurements were compared with results obtained previously for Kodak Ektaspeed (E-speed) film. The results of the evaluation indicate that the PSPL system may be capable of operating at exposures up to 80% lower than for film with comparable image quality.

This article has been cited by other articles:

				B. Akdeniz and H-G Grondahl Degradation of storage phosphor images due to scanning delay. Dentomaxillofac. Radiol., March 1, 2006; 35(2): 74 - 77. [Abstract] [Full Text] [PDF]