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Proceedings Paper

Imaging Performance Of A Selenium-Based Detector For High-Resolution Radiography
Author(s): W. Hillen; St. Rupp; U. Schiebel; T. Zaengel
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Paper Abstract

An experimental set-up of a selenium-based detector with a scanning fan-beam exposure and improved spatial resolution has been realized. The imaging performance in terms of MTF, image noise and signal-to-noise (S/N) ratios (NEQ,DQE) is measured as a function of dose and spatial frequency for 40 kVp and 50 kVp tungsten X-ray spectra. The measured S/N-performance is interpreted in terms of a simple model which is used to study the effect of geometric magnification techniques and the behaviour of the system for various beam qualities. The object detectability for weak and high contrast objects has been calculated for different beam qualities. The results are compared with the data of high-resolution screen-film systems.

Paper Details

Date Published: 1 May 1989
PDF: 10 pages
Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); doi: 10.1117/12.953214
Show Author Affiliations
W. Hillen, Philips GmbH (West Germany)
St. Rupp, Philips GmbH (West Germany)
U. Schiebel, Philips GmbH (West Germany)
T. Zaengel, Philips GmbH (West Germany)

Published in SPIE Proceedings Vol. 1090:
Medical Imaging III: Image Formation
Samuel J. Dwyer; R. Gilbert Jost; Roger H. Schneider, Editor(s)

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