The Digital Dental Office as the Agent of Change. A Symposium Sponsored by the Diagnostic Systems Group of the International Association for Dental Radiology at the 76th General Session. Nice, June 24-27, 1998.

doi:10.1038/sj.dmfr.4600408

Dentomaxillofacial Radiology

1999

DOI: 10.1038/sj.dmfr.4600408

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The Digital Dental Office as the Agent of Change. A Symposium Sponsored by the Diagnostic Systems Group of the International Association for Dental Radiology at the 76th General Session. Nice, June 24-27, 1998.

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Effects of scanning resolution and digital image magnification on photostimulable phosphor imaging system

et al. 2000

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Objectives: To examine the effects of changes in scanning resolution and digital magnification on the image quality and diagnostic ability of the photostimulable phosphor imaging system. Methods: Using a photostimulable phosphor imaging system, images of a human adult dried mandible phantom embedded in a 25 mm-thick epoxy resin block were made. The latent images on the photostimulable phosphor imaging plate were scanned using four different pixel sizes as follows: 25ffmX25ffm, 50ffm• 100ffm• and 200ffmX200ffm. A primary image was produced for each pixel size. These images were also digitally magnified at powers of 2, 4 and 8 times. The gradient range, brightness and contrast of each image were adjusted to optimum levels on a cathode ray tube display, and hard copies were produced with a writing pixel size of 60ffm• The granularity, sharpness and anatomical diagnostic ability of the images were assessed subjectively by eight dentists.Results: Increasing the scanning resolution tended to generally improve image quality and diagnostic ability. Visual image quality was maintained up to a pixel size of 50fire, and diagnostic ability was maintained up to a pixel size of 100ffm. Digital image magnification degraded image quality, and more than 2-times magnification degraded diagnostic ability.Conclusions: Under the present experimental conditions, increasing the scanning resolution did not always lead to an improvement in image quality or diagnostic ability, and digital image magnification degraded image quality and diagnostic ability.

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Effects of scanning resolution and digital image magnification on photostimulable phosphor imaging system

et al. 2000

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The Digital Dental Office as the Agent of Change. A Symposium Sponsored by the Diagnostic Systems Group of the International Association for Dental Radiology at the 76th General Session. Nice, June 24-27, 1998.

Cited by 1 publication

References 15 publications

Effects of scanning resolution and digital image magnification on photostimulable phosphor imaging system

Effects of scanning resolution and digital image magnification on photostimulable phosphor imaging system

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