Characteristics Of A Linear Xenon Detector Array For Digital Radiography

D. J. Drost; A. Fenster

doi:10.1117/12.931791

Abstract

We have designed and built an experimental linear xenon detector array to test its suitability as an x-ray detector for digital radiography. This new design consists of only two plates separated by a 0.5 mm gap filled with high pressure xenon gas. One of the plates is a high voltage electrode and the other is a circuit board etched to give an array of metal collector strips focussed on the x-ray source. Each stria or detector element is 9.5 mm wide and 6.3 cm long. This detector is simpler and more economical to build than the CT xenon x-ray detectors, in which detector elements are separated by metal septa occupying approximately 40% of the detector cross-sectional area. This new xenon detector design is described along with its calculated quantum efficiency, and its measured sensitivity, linearity, and cross-talk between detector elements. From these results it is evident that this detector is suitable for digital radiography as it is dose efficient, and has less than 10% cross-talk.

Citation Download Citation

D. J. Drost, A. Fenster, "Characteristics Of A Linear Xenon Detector Array For Digital Radiography", Proc. SPIE 0273, Application of Optical Instrumentation in Medicine IX, (16 July 1981); doi: 10.1117/12.931791; https://doi.org/10.1117/12.931791

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