A digital line-camera for energy resolved x-ray photon counting

Xiaolan Wang, Dirk Meier, Bjorn M. Sundal, Petter Oya, Gunnar E. Maehlum, Douglas J. Wagenaar, Bradley E. Patt, Benjamin M.W. Tsui, Eric C. Frey

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

11 Scopus citations

Abstract

We describe a digital line-camera that can be used for computed tomography (CT) with energy resolved x-ray photon counting (XPC) capability. The camera is based on pixellated cadmium telluride (CdTe) radiation sensors and application specific integrated circuits (ASICs). Each camera pixel simultaneously counts x-rays in multiple energy bins providing the capability for "color" x-ray imaging and energy weighted x-ray CT. The camera can be used in pre-clinical x-ray microCT, where energy resolved photon counting is capable of improving contrast in the image and reducing radiation dose to the subject. We began testing the camera using 120-kVp polychromatic x-rays illuminating a phantom consisting of different test materials. Projection data of x-ray intensity transmitted through the phantom at different views were acquired and reconstructed to obtain tomographic images. This article describes the functionality and performance of the camera, and presents preliminary results from x-ray microCT with phantoms.

Original languageEnglish (US)
Title of host publication2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Pages3453-3457
Number of pages5
DOIs
StatePublished - 2009
Externally publishedYes
Event2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
Duration: Oct 25 2009Oct 31 2009

Publication series

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

Other

Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Country/TerritoryUnited States
CityOrlando, FL
Period10/25/0910/31/09

ASJC Scopus subject areas

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

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