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3 May 2002 Evaluation of plain-film digitizers: a comparison of different systems and models
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This paper describes the results of the comparison of 5 film digitizers designed for medical application to find an appropriate film digitizer for a project involving display of mammograms on a high performance CRT. Two of the digitizers were of the laser-scanning type while 3 were based on CCD technology. The comparison included estimates of linearity, uniformity, signal-to-noise ratio and spatial resolution in terms of the Modulation Transfer Function (MTF). The digitizers investigated show vastly different results. No system excelled in all performance parameters. A laser scanning digitizer was chosen for the planned display project because (1) it had the best linearity (down to OD 4); (2) it had the highest SNR at OD 4; (3) it had a comparatively good MTF.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans Roehrig, William J. Dallas, Hartwig R. Blume, Elizabeth A. Krupinski, Michel M. Rogulski, Jiahua Fan, and Khushroo Gandhi "Evaluation of plain-film digitizers: a comparison of different systems and models", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002);


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