Imaging Performance Of A Selenium-Based Detector For High-Resolution Radiography

W. Hillen; St. Rupp; U. Schiebel; T. Zaengel

doi:10.1117/12.953214

1 May 1989 Imaging Performance Of A Selenium-Based Detector For High-Resolution Radiography

W. Hillen, St. Rupp, U. Schiebel, T. Zaengel

Proceedings Volume 1090, Medical Imaging III: Image Formation; (1989) https://doi.org/10.1117/12.953214
Event: Medical Imaging III, 1989, Newport Beach, CA, United States

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.

Citation Download Citation

W. Hillen, St. Rupp, U. Schiebel, and T. Zaengel "Imaging Performance Of A Selenium-Based Detector For High-Resolution Radiography", Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); https://doi.org/10.1117/12.953214

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