Application of a newly developed photoluminescence glass dosimeter for measuring the absorbed dose in individual mice exposed to low-dose rate Cs-137gamma-rays

A photoluminescence glass dosimeter, GD-301, was applied to the measurement of low absorbed doses in mice exposed to low-dose rate Cs-137 gamma-rays. The dosimeter system consists of small rod-shaped glass chip detectors capa ble of embedded in the body of a mouse and an automatic readout device equi pped with a standard detector irradiated with Cs-137 gamma-source. The meas ured absorbed doses were compared with the "exposure" estimated by an ioniz ation chamber and with the doses measured by a BeO:Na thermoluminescence sy stem. The results clearly demonstrate the superiority of the glass dosimetr y regarding simplicity of operation, stability of long-term dose accumulati on and good detector uniformity, which allow accurate tissue dosimetry.