Monte Carlo simulation of a prototype photodetector used in radiotherapy

C. Kausch*, F. Cremers, D. Albers, R. Schmidt, B. Schreiber

*Corresponding author for this work


The imaging performance of prototype electronic portal imaging devices (EPID) has been investigated. Monte Carlo simulations have been applied to calculate the modulation transfer function (MTF(f)), the noise power spectrum (NPS(f)) and the detective quantum efficiency (DQE(f)) for different new type of EPIDs, which consist of a detector combination of metal or polyethylene (PE), a phosphor layer of Gd2O2S and a flat array of photodiodes. The simulated results agree well with measurements. Based on simulated results, possible optimization of these devices is discussed.

Original languageEnglish
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-3
Pages (from-to)53-57
Number of pages5
Publication statusPublished - 11.03.2000
EventThe 2nd International Conference on New Developments in Photodetection
- Beaune, France
Duration: 21.06.199925.06.1999
Conference number: 56717


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