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Proceedings Paper

Computer Assisted Exposure In Scanned Film Radiography
Author(s): D. B. Plewes
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Paper Abstract

A scanning beam system with feedback equalization is described. This offers the reduction in scattered radiation with a pair of moving slits and the regional manipulation of incident x-ray exposure to compress large variations in trans-mitted film exposure to fit within the useful exposure range of radiographic film. When applied to chest radiography, this allows maximum soft tissue contrast in the retrodiaphragmatic, retro-cardiac, mediastinal and lung field regions. The scan time to expose a 14" x 17" chest film is 5 seconds with either a one-dimensional slit scan or a two-dimensional raster scan. By manipulation of the feedback scheme, considerable variation in low frequency contrast can be obtained.

Paper Details

Date Published: 1 November 1982
PDF: 8 pages
Proc. SPIE 0372, Physics and Engineering in Medical Imaging, (1 November 1982); doi: 10.1117/12.934498
Show Author Affiliations
D. B. Plewes, University of Rochester (United States)


Published in SPIE Proceedings Vol. 0372:
Physics and Engineering in Medical Imaging
Orhan Nalcioglu, Editor(s)

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