• Title/Summary/Keyword: GM계수관

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Comparison of the Measured Radiation Dose-rate by the Ionization Chamber and GM(Geiger-Müller) Counter After Radioactive Iodine Therapy in Differentiated Thyroid Cancer Patients (분화성 갑상선암환자의 방사성 요오드 치료시 전리함과 Geiger-Muller계수관에서 방사선량률 측정값 비교)

  • Park, Kwang-hun;Kim, Kgu-hwan
    • Journal of radiological science and technology
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    • v.39 no.4
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    • pp.565-570
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    • 2016
  • Radioactive iodine($^{131}I$) treatment reduces recurrence and increases survival in patients with differentiated thyroid cancer. However, it is important in terms of radiation safety management to measure the radiation dose rate generated from the patient because the radiation emitted from the patient may cause the exposure. Research methods, it measured radiation dose-rate according to the elapsed time from 1 m from the upper abdomen of the patient by intake of radioactive iodine. Directly comparing the changes over time, high dose rate sensitivity and efficiency is statistically significant, and higher chamber than GM counter(p<0.05). Low dose rate sensitivity and efficiency in the chamber had lower levels than gm counter, but not statistically significant(p>0.05). In this study confirmed the characteristics of calibrated ionization chamber and GM counter according to the radiation intensity during high-dose radioactive iodine therapy by measuring the accurate and rapid radiation dose rate to the patient explains, discharged patients will be reduced to worry about radiation hazard of family and others person.