Preliminary report on the development of a high resolution PET camera using semiconductor detectors

Yohei Kikuchi, Keizo Ishii, Hiromichi Yamazaki, Shigeo Matsuyama, Takashi Yamaguchi, Yusuke Yamamoto, Takemi Sato, Yasushi Aoki, Kenichi Aoki

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We are developing a PET camera using small semiconductor detectors, whose resolution is equivalent to the physical limit of spatial resolution. First, a coincidence system of 16 Schottky CdTe detectors of 0.5 mm width obtained a resolution of <1 mm and it was confirmed that the Schottky CdTe detector is suitable for high resolution PET. Next, the performance of a pair of 32 channel CdTe arrays (1.2 mm width per channel) was investigated for the development of the prototype of high resolution PET. The time resolution between opposing detector pair was 13 ns (FWHM) when high voltage (700 V) was applied. The image of a 0.6 mm diameter point source was obtained in an experiment with opposing detector arrays using four channels, indicating that, a higher resolution can be achieved with the 32 channel CdTe array.

Original languageEnglish
Pages (from-to)727-731
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume241
Issue number1-4
DOIs
Publication statusPublished - 2005 Dec

Keywords

  • CdTe
  • Image
  • PET
  • Semiconductor PET
  • Spatial resolution

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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