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The radiotherapy accident in Costa Rica occurred with the Alcyon II radiotherapy unit at San Juan de Dios Hospital in San José, Costa Rica. It was related to a cobalt-60 source that was being used for radiotherapy in 1996. An accidental overexposure of radiotherapy patients treated during August and September 1996 was detected. During the calibration process done after the change of Co-60 source on 22 August 1996, a mistake was made in calculating the dose rate, leading to severe overexposure of patients. The error of calibration was detected on 27 December 1997. In the course of the accident, 114 patients received an overdose of radiation and 13 died of radiation-related injuries.〔(Medical management of radiation accidents ) pp. 299 & 303.〕〔(Strengthening the Safety of Radiation Sources ) p. 15.〕 ==See also== * Goiânia accident * Incident in Hospital Son Dureta * List of civilian radiation accidents * Radiotherapy accident in Zaragoza * X-ray * Nuclear safety * Nuclear whistleblowers 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1996 San Juan de Dios radiotherapy accident」の詳細全文を読む スポンサード リンク
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