Uniformity correction in photon-counting X-ray detector based on basis material decomposition

Xiaolan Wang, Xin He, Katsuyuki Taguchi, Bradley E. Patt, Douglas J. Wagenaar, Eric C. Frey

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

Abstract

We have developed and evaluated a method to correct for detector cell response variations in photon-counting X-ray detectors with energy discrimination capability. With these detectors, variations in energy thresholds or energy response of the detector cells can result in spectral-dependent nonuniformities in sinograms that produce rings in reconstructed images. The proposed method is basis material decompositionbased and corrects variations in the spectral sensitivity of detector cells to reflect the characteristics of a standard detector cell. requires calibration similar to that used in basis material decomposition methods and does not require knowledge of the exact energy spectrum, energy thresholds, or energy response of the individual detector cells. Both simulation and physical experiments studies showed substantial reduction in nonuniformity in sinograms and of rings in reconstructed images.

Original languageEnglish (US)
Title of host publication2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Pages4902-4905
Number of pages4
DOIs
StatePublished - Dec 1 2008
Event2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany
Duration: Oct 19 2008Oct 25 2008

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Country/TerritoryGermany
CityDresden
Period10/19/0810/25/08

ASJC Scopus subject areas

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

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