PLoS ONE (Jan 2018)

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

DOI
https://doi.org/10.1371/journal.pone.0208909
Journal volume & issue
Vol. 13, no. 12
p. e0208909

Abstract

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Imaging was conducted using an electron tracking-Compton camera (ETCC), which measures γ-rays with energies in the range of 200-900 keV from 95mTc. 95mTc was produced by the 95Mo(p, n)95mTc reaction on a 95Mo-enriched target. A method for recycling 95Mo-enriched molybdenum trioxide was employed, and the recycled yield of 95Mo 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 95mTc is useful for the medical imaging of deep tissue and organs in the human body.