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Proceedings Paper

Evaluation of plain-film digitizers: a comparison of different systems and models
Author(s): Hans Roehrig; William J. Dallas; Hartwig R. Blume; Elizabeth A. Krupinski; Michel M. Rogulski; Jiahua Fan; Khushroo Gandhi
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Paper Abstract

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.

Paper Details

Date Published: 3 May 2002
PDF: 10 pages
Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); doi: 10.1117/12.465616
Show Author Affiliations
Hans Roehrig, Univ. of Arizona (United States)
William J. Dallas, Univ. of Arizona (United States)
Hartwig R. Blume, Philips Medical Systems (United States)
Elizabeth A. Krupinski, Univ. of Arizona (United States)
Michel M. Rogulski, Eastman Kodak Corp. (United States)
Jiahua Fan, Univ. of Arizona (United States)
Khushroo Gandhi, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 4682:
Medical Imaging 2002: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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