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Proceedings Paper

Scanned Orojection Digital Mammographic Imaging
Author(s): M. J. Yaffe; R. M. Nishikawa; A. Fenster; I. A. Cunningham; G . E. Mawdsley
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Paper Abstract

Film-screen mammography is the most sensitive means available for the detection of early breast cancer. Its performance, however, is often limited by the restricted latitude over which the gradient of the radiographic film Provides appreciable contrast and by film granularity. We are currently investigating means for acquiring the mammographic image directly in digital form, using a scanned fan-beam x-ray system and high resolution image intensifier coupled to a self-scanned photo-diode array. Such a system will potentially provide efficient scatter-rejection and images which are limited only by quantum fluctuation. At the same time it would make practical such image enhancement techniques as contrast amplification and unsharp masking as well as dual-energy image processing for the improved detection of calcifications. In this paper a prototype digital mammographic system is described and preliminary images of surgical specimens are presented.

Paper Details

Date Published: 19 September 1985
PDF: 6 pages
Proc. SPIE 0555, Medical Imaging and Instrumentation '85, (19 September 1985); doi: 10.1117/12.949503
Show Author Affiliations
M. J. Yaffe, University of Toronto (Canada)
R. M. Nishikawa, University of Toronto (Canada)
A. Fenster, University of Toronto (Canada)
I. A. Cunningham, University of Toronto (Canada)
G . E. Mawdsley, University of Toronto (Canada)


Published in SPIE Proceedings Vol. 0555:
Medical Imaging and Instrumentation '85
James A. Mulvaney, Editor(s)

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