Light output measurements and computational models of microcolumnar CsI scintillators for x-ray imaging

Medical Physics
Peter NilliusAldo Badano

Abstract

The authors report on measurements of light output and spatial resolution of microcolumnar CsI:Tl scintillator detectors for x-ray imaging. In addition, the authors discuss the results of simulations aimed at analyzing the results of synchrotron and sealed-source exposures with respect to the contributions of light transport to the total light output. The authors measured light output from a 490-μm CsI:Tl scintillator screen using two setups. First, the authors used a photomultiplier tube (PMT) to measure the response of the scintillator to sealed-source exposures. Second, the authors performed imaging experiments with a 27-keV monoenergetic synchrotron beam and a slit to calculate the total signal generated in terms of optical photons per keV. The results of both methods are compared to simulations obtained with hybridmantis, a coupled x-ray, electron, and optical photon Monte Carlo transport package. The authors report line response (LR) and light output for a range of linear absorption coefficients and describe a model that fits at the same time the light output and the blur measurements. Comparing the experimental results with the simulations, the authors obtained an estimate of the absorption coefficient for the model that...Continue Reading

References

Oct 19, 2004·Medical Physics·Wei ZhaoJ A Rowlands
Dec 14, 2004·Medical Physics·Aldo BadanoKyle J Myers
Mar 3, 2006·Physics in Medicine and Biology·Aldo Badano, Josep Sempau
Feb 18, 2010·Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment·S C ThackerV V Nagarkar

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Citations

Jul 9, 2020·Light, Science & Applications·Wenjuan ZhuYang Michael Yang
Jul 1, 2021·Light, Science & Applications·Wenjuan ZhuYang Michael Yang

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