CZT detector modeling for coded aperture X-ray diffraction imaging applications

J. Greenberg, K. Iniewski, D. Brady

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

CZT detectors are primary candidates for many next-generation X-ray diffraction imaging systems. We have conducted a study to evaluate performance tradeoffs and limitations of CZT energy-sensitive detectors in coded aperture X-ray imaging (CAXI) architectures. We have found, as expected, that performance of the coded aperture architecture depends critically on energy resolution (ER) of the detector. We have also found that spectrum tail, as measured for mono-energetic sources, is less important although the incomplete charge collection leads to distorted system level information. We have built a mathematical model for the energy spectrum that can be used to optimize the detector geometry (pixel size, detector thickness), detector fabrication (injecting vs. non-injecting contacts) and operating conditions (HV bias, count rate) for the optimum performance of the coded aperture X-ray imaging systems.

Original languageEnglish (US)
Title of host publication2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479960972
DOIs
StatePublished - Mar 10 2016
Externally publishedYes
EventIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 - Seattle, United States
Duration: Nov 8 2014Nov 15 2014

Publication series

Name2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014

Other

OtherIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
Country/TerritoryUnited States
CitySeattle
Period11/8/1411/15/14

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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