Energy-discriminating K-edge x-ray computed tomography system

Manabu Watanabe, Eiichi Sato, Purkhet Abderyim, Hiroshi Matsukiyo, Akihiro Osawa, Toshiyuki Enomoto, Jiro Nagao, Seiichiro Nomiya, Keitaro Hitomi, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)


An energy-discriminating K-edge x-ray Computed Tomography (CT) system is useful for increasing contrast resolution of a target region and for diagnosing cancers utilizing a drug delivery system. The CT system is of the first generation type and consists of an x-ray generator, a turn table, a translation stage, a two-stage controller, a cadmium telluride (CdTe) detector, a charge amplifier, a shaping amplifier, a multi-channel analyzer (MCA), a counter board (CB), and a personal computer (PC). The K-edge CT is accomplished by repeating translation and rotation of an object. Penetrating x-ray spectra from the object are measured by a spectrometer utilizing the CdTe detector, amplifiers, and MCA. Both the photon energy and the energy width are selected by the MCA for discriminating photon energy. Enhanced iodine K-edge x-ray CT was performed by selecting photons with energies just beyond iodine K-edge energy of 33.2 keV.

Original languageEnglish
Title of host publicationPenetrating Radiation Systems and Applications IX
Publication statusPublished - 2008
EventPenetrating Radiation Systems and Applications IX - San Diego, CA, United States
Duration: 2008 Aug 132008 Aug 14

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferencePenetrating Radiation Systems and Applications IX
Country/TerritoryUnited States
CitySan Diego, CA


  • Cancer diagnosis
  • CdTe detector
  • Energy discriminating
  • K-edge CT
  • Microanalysis
  • X-ray CT


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