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Proceedings Paper

Hard copies for digital medical images: an overview
Author(s): Hartwig R. Blume; Edward Muka
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Paper Abstract

This paper is a condensed version of an invited overview on the technology of film hard-copies used in radiology. Because the overview was given to an essentially nonmedical audience, the reliance on film hard-copies in radiology is outlined in greater detail. The overview is concerned with laser image recorders generating monochrome prints on silver-halide films. The basic components of laser image recorders are sketched. The paper concentrates on the physical parameters - characteristic function, dynamic range, digitization resolution, modulation transfer function, and noise power spectrum - which define image quality and information transfer capability of the printed image. A preliminary approach is presented to compare the printed image quality with noise in the acquired image as well as with the noise of state-of- the-art cathode-ray-tube display systems. High-performance laser-image- recorder/silver-halide-film/light-box systems are well capable of reproducing acquired radiologic information. Most recently development was begun toward a display function standard for soft-copy display systems to facilitate similarity of image presentation between different soft-copy displays as well as between soft- and hard-copy displays. The standard display function is based on perceptional linearization. The standard is briefly reviewed to encourage the printer industry to adopt it, too.

Paper Details

Date Published: 27 April 1995
PDF: 44 pages
Proc. SPIE 2413, Color Hard Copy and Graphic Arts IV, (27 April 1995); doi: 10.1117/12.207579
Show Author Affiliations
Hartwig R. Blume, Philips Medical Systems North America Co. (United States)
Edward Muka, Mallinckrodt Institute of Radiology/Washington Univ. Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 2413:
Color Hard Copy and Graphic Arts IV
Jan Bares, Editor(s)

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