Development of a prototype semiconductor gamma-camera system

Koichi Ogawa, Takumi Ishikawa, Keisei Shuto, Hiroaki Kobayashi, Tadaki Nakahara, Naoyuki Shigematsu

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

2 Citations (Scopus)


We made a prototype gamma camera system with CdZnTe semiconductor detectors that work at room temperature. The effective field of view of this detector is 195 x 156 mm2 with a pixel size of 2.46 x 2.46 mm2. We evaluated the performance of the detector in terms of the energy resolution, intrinsic spatial resolution, system spatial resolution and system sensitivity. The performance of the detector was evaluated with methods based on the NEMA standard (NU1). The results showed that the mean energy resolution was 5.55 % FWHM for 99mTc, the intrinsic spatial resolution 2.46 mm FWHM, the system spatial resolutions 7.1 mm FWHM (without scatterer) and 7.4 mm FWHM (with scatterer), and the system sensitivity 46.3 cps/MBq. The performance of the system was also evaluated with some SPECT phantoms and the feasibility of the detector was confirmed with the SPECT images.

Original languageEnglish
Title of host publication2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Number of pages5
Publication statusPublished - 2009 Dec 1
Event2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
Duration: 2009 Oct 252009 Oct 31

Publication series

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


Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Country/TerritoryUnited States
CityOrlando, FL

ASJC Scopus subject areas

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


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