LaRiviere P D
Health Phys. 1985 Dec;49(6):1105-14. doi: 10.1097/00004032-198512000-00006.
Whole-body doses incurred by radiation therapy technologists working with 18- and 24-MV medical linear accelerators have been measured at two clinics under normal working conditions with a sensitive solid-state personal dosimeter. The results based on 84 treatments indicate that average monthly doses in the range 12-19 mrem can be expected for 30 daily treatments similar to those monitored. It was also found that 76% of the in-room dose was due to activated components in the treatment head, the balance of the in-room dose being due to activated concrete. Other statistics were obtained on patient in-room times and technologist times and doses outside the treatment room. Although the monthly film dosimetry records show no detectable doses for technologists working with these particular machines, in the spirit of ALARA, steps have been taken to reduce residual activities even further by choice of material less susceptible to activation.
在两家诊所，使用灵敏的固态个人剂量计，在正常工作条件下测量了操作18兆伏和24兆伏医用直线加速器的放射治疗技术人员所受的全身剂量。基于84次治疗的结果表明，对于30次与所监测类似的每日治疗，平均每月剂量预计在12 - 19毫雷姆范围内。还发现，室内剂量的76% 是由于治疗头中的活化部件，室内剂量的其余部分是由于活化混凝土。还获得了关于患者在室内时间以及技术人员在治疗室外的时间和剂量的其他统计数据。尽管每月的胶片剂量测定记录显示，操作这些特定机器的技术人员没有可检测到的剂量，但本着“尽可能低合理达到”（ALARA）原则，已采取措施通过选择不易活化的材料进一步降低残留放射性。
