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26 December 1979 Digital Method To Evaluate The Noise Of X-Ray Image Intensifiers
H. Roehrig; B. Lum; D. Fisher; D. Ouimette; M. P. Capp; M. M. Frost; S. Nudelman
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Proceedings Volume 0206, Recent and Future Developments in Medical Imaging II; (1979) https://doi.org/10.1117/12.958204
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States
Abstract
A novel method has been developed to evaluate the noise of x-ray image intensifiers. Fast electronics and a fast photomultiplier tube (PMT) are optically coupled to the output of an x-ray image intensifier. The light emission induced in the intensifier by the absorption of x-ray photons is measured by counting single PMT photoelectrons. The fluctuation in the number of counted PMT photoelectrons per absorbed monochromatic x-ray photon is a measure of the noise of the x-ray image intensifier. It is characterized by an efficiency factor called DQEscin whose values have been obtained from PMT count distributions for five x-ray energies. Experimental results reveal that the output signal-to-noise ratio of the x-ray image intensifier under study is reduced by no more than 10% as expected from the efficiency factor DQEscin.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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H. Roehrig, B. Lum, D. Fisher, D. Ouimette, M. P. Capp, M. M. Frost, and S. Nudelman "Digital Method To Evaluate The Noise Of X-Ray Image Intensifiers", Proc. SPIE 0206, Recent and Future Developments in Medical Imaging II, (26 December 1979); https://doi.org/10.1117/12.958204
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