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Digital X-ray imaging using gas microstrip detectors

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9 Author(s)
Dixit, M.S. ; Centre for Res. in Particle Phys., Carleton Univ., Ottawa, Ont., Canada ; Armitage, J.C. ; Bouius, D. ; Diaconescu, L.
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Gas microstrip detectors (GMDs) could be ideal for use in digital X-ray imaging because of their ability to measure accurately, with virtually no noise, the energy and the position of X-ray photons at radiological counting rates. Thus a GMD based imaging system will have high detective quantum efficiency and will also be capable of dual energy radiography using a single X-ray exposure. As proof of principle, a prototype atmospheric pressure GMD imaging system has been built and its performance characterized by imaging standard phantoms and biological specimens. Using 8 keV X-rays from a copper target a line spread function with a FWHM of 230 μm (determined by the photoelectron range of 190 μm) was obtained for a gas mixture of 90% Ar and 10% isobutane

Published in:

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE  (Volume:3 )

Date of Conference:

21-28 Oct 1995

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