A high-resolution CdTe imaging detector with multi-pinhole optics for in-vivo molecular imaging

Shin'ichiro Takeda, Miho Katsuragawa, Tadashi Orita, Fumiki Moriyama, Yasuo Arai, Hirotaka Sugawara, Sayuri Oshita, Goro Yabu, Shin Watanabe, Tadayuki Takahashi, Lars R Furenlid

Research output: Contribution to journalArticle

2 Scopus citations


High-resolution CdTe semiconductor detectors with both fine position resolution and high energy resolution hold great promise to improve measurement in various hard X-ray and gamma-ray imaging experiments. In the field of in-vivo molecular imaging, where the molecules labeled with radioisotopes are injected into a small animal and their distribution in a body is detected by gamma-ray imaging detectors externally, a large detection area is also required to obtain a number of projections from multiple pinholes. We have developed a prototype imaging system consisting of a 32 mm-wide CdTe double-sided strip detector equipped with multi-pinhole optics. We describe its imaging capability, as studied through experiments with radioisotopes for medical use (125I and 111In) and a 3D phantom.



  • CdTe
  • Gamma-ray
  • In-vivo
  • Molecular imaging
  • Semiconductor detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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