Electron-tracking Compton camera imaging of technetium-95m

Yuichi Hatsukawa, Takehito Hayakawa, Kazuaki Tsukada, Kazuyuki Hashimoto, Tetsuya Sato, Masato Asai, Atsushi Toyoshima, Toru Tanimori, Shinya Sonoda, Shigeto Kabuki, Hiroyuki Kimura, Atsushi Takada, Tetsuya Mizumoto, Seiya Takaki

Research output: Contribution to journalArticlepeer-review


Imaging was conducted using an electron tracking-Compton camera (ETCC), which measures γ-rays with energies in the range of 200–900 keV from 95m Tc. 95m Tc was produced by the 95 Mo (p, n) 95m Tc reaction on a 95 Mo-enriched target. A method for recycling 95 Mo-enriched molybdenum trioxide was employed, and the recycled yield of 95 Mo was 70%-90%. Images were obtained with the gate of three energies. The results showed that the spatial resolution increases with increasing γ-ray energy, and suggested that the ETCC with high-energy γ-ray emitters such as 95m Tc is useful for the medical imaging of deep tissue and organs in the human body.

Original languageEnglish
Article numbere0208909
JournalPloS one
Issue number12
Publication statusPublished - Dec 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General


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