Performance of the first Japanese large-scale facility for radon inhalation experiments with small animals

Yuu Ishimori, Fumihiro Mitsunobu, Kiyonori Yamaoka, Hiroshi Tanaka, Takahiro Kataoka, Akihiro Sakoda

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13 Citations (Scopus)


A radon test facility for small animals was developed in order to increase the statistical validity of differences of the biological response in various radon environments. This paper illustrates the performances of that facility, the first large-scale facility of its kind in Japan. The facility has a capability to conduct approximately 150 mouse-scale tests at the same time. The apparatus for exposing small animals to radon has six animal chamber groups with five independent cages each. Different radon concentrations in each animal chamber group are available. Because the first target of this study is to examine the in vivo behaviour of radon and its effects, the major functions to control radon and to eliminate thoron were examined experimentally. Additionally, radon progeny concentrations and their particle size distributions in the cages were also examined experimentally to be considered in future projects.

Original languageEnglish
Article numberncr100
Pages (from-to)31-33
Number of pages3
JournalRadiation Protection Dosimetry
Issue number1-3
Publication statusPublished - Jul 2011

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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