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EXPOSURE OF A SERVICE TECHNICIAN REPAIRING A BIPLANE X-RAY SYSTEM

机译：维修双平面X射线系统的维修技术人员的照射

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摘要

While repairing a biplane cardiovascular X-ray system in a hospital, a service technician accidentally activated the system's floor pedal. He continued his work under unnoticed exposure for about 5 min until the system alarm was automatically activated. About 2 h after the exposure, the technician developed an erythema on parts of his left face and neck. The next day, he reported his incident to the competent authorities and was hospitalised in a unit specialised in treating heavily irradiated patients. Frequent blood analysis did not show any signs for a significant exposure to radiation. The Federal Office of Public Health then conducted extensive dose estimations. It could be shown that the dismounted collimator was always in front of the lateral X-ray tube, shielding the technician from the direct beam. The dose estimations came to the following conservative results: an effective dose of 5 mSv, a skin dose of 200 mSv, an eye lens dose of 100 mSv and an extremity dose (arm) of 700 mSv. The cause of the erythema remains unclear since the estimated doses are thought to be too low to induce any visible effect on the skin.
机译：在医院维修双翼心血管X射线系统时，服务技术人员不小心激活了系统的地板踏板。他在不被注意的情况下继续工作约5分钟，直到系统警报被自动激活。暴露后约2小时，技术人员的左脸和脖子部分出现红斑。第二天，他向主管当局报告了他的事件，并被送往专门治疗重度照射患者的部门住院。频繁的血液分析未显示任何明显暴露于辐射的迹象。然后，联邦公共卫生局进行了广泛的剂量估算。可以看出，卸下的准直仪始终位于侧面X射线管的前面，从而使技术人员免受直射光束的伤害。剂量估计得出以下保守结果：有效剂量为5 mSv，皮肤剂量为200 mSv，眼镜剂量为100 mSv，肢端剂量（手臂）为700 mSv。红斑的原因尚不清楚，因为估计的剂量被认为太低而无法在皮肤上引起任何可见的影响。

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  • 来源
    《Radiation Protection Dosimetry》 |2018年第1期|18-19|共2页
  • 作者

    Elmiger R.; Schanz U.; Ott B.; Frei D.;

  • 作者单位

    FOPH, CH-3003 Bern, Switzerland;

    Univ Hosp Zurich, Dept Hematol & Oncol, Raemistr 100, CH-8091 Zurich, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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