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PubMed · 12105697

Observer study involving laser-digitized versus CCD-digitized images.

Kenneth W Clark·William B Dawson·Edward Muka·Thomas K Pilgram·G James Blaine
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Abstract

We compared laser- and CCD-digitized images for perceived image quality differences in a radiologist-observer study. Films of 50 two- and three-view studies (ankles, chests, c-spines, shoulders) were digitized on calibrated laser (Kodak Lumisys 75) and CCD (VIDAR SIERRA Plus) digitizers. Six radiologists independently compared digitized images on twin high-resolution monochrome monitors. Matching images were randomly presented on left/right monitors to support blinded comparisons. Observers scored image quality (for several diagnostic criteria) as "no different," left or right image "slightly" or "significantly" different. Of 7324 responses, 77.8% scored "no different" and 21.9% "slightly different" (5.9% favoring CCD, 16.0% favoring laser). In only 0.3% did observers score "significantly different." The Lumisys laser images were assessed as only slightly better than VIDAR SIERRA CCD images. Digitizer equipment-selection decisions can, therefore, be considered on the basis of price, reliability, support, ease-of-use, etc., rather than solely on the basis of image quality.

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AnkleCervical VertebraeHumansLasersObserver VariationRadiographic Image EnhancementRadiography, ThoracicShoulderComparative StudyJournal ArticleResearch Support, Non-U.S. Gov't

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Kenneth W Clark, William B Dawson, Edward Muka, Thomas K Pilgram, G James Blaine. 2002-03-19. Observer study involving laser-digitized versus CCD-digitized images.. https://doi.org/10.1007/s10278-002-5031-z

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