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Development of gas microstrip detectors for digital X-ray imaging and radiation dosimetry

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8 Author(s)
M. S. Dixit ; Centre for Res. in Particle Phys., Carleton Univ., Ottawa, Ont., Canada ; J. C. Armitage ; J. Dubeau ; D. G. Gobbi
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Our recent work in the application of gas microstrip detector (GMD) technology to the fields of digital X-ray imaging and radiation dosimetry is described. The GMD can measure the position and the energy of individual photons at the high counting rates encountered in X-ray imaging. GMD-based imaging systems have high detective quantum efficiency and permit improvement of image quality and contrast using display windowing and measured energy information. Results are presented on the performance of a prototype GMD imaging system operated with a xenon/methane 90/10 gas mixture at 1 atm. Results are also presented on the performance of a GMD filled with tissue equivalent gases for applications in the field of radiation dosimetry in mixed neutron and γ fields. The results show that the GMD can be used for dosimetric discrimination between different types of radiation in mixed-field environments

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IEEE Transactions on Instrumentation and Measurement  (Volume:47 ,  Issue: 3 )