Herman M W, Patrick J, Tabrisky J
Radiology. 1980 Nov;137(2):552-3. doi: 10.1148/radiology.137.2.7433692.
The levels of scattered radiation from 80-kVp and 240-kVp mobile x-ray units were measured in the surgical intensive care unit (ICU). The intensity of scatter of the 240-kVp x rays does not decrease with distance as rapidly as with the 80-kVp beam. In an ICU with four beds, the weekly radiation exposure at the nurses' station approximated 0.05 mR (0.13 X 10(-7) C/kg) for the 80-kVp beam and 0.2 mR (0.52 X 10(-7) C/kg) for the 240-kVp beam. Thus, the annual exposure from either unit would be well below the Maximum Permissible Exposure for nonoccupational workers.
在外科重症监护病房（ICU）中测量了80千伏峰值和240千伏峰值移动X射线设备的散射辐射水平。240千伏峰值X射线的散射强度随距离的降低速度不如80千伏峰值射线那样快。在一个有四张病床的ICU中，对于80千伏峰值射线，护士站每周的辐射暴露量约为0.05毫伦琴（0.13×10⁻⁷库仑/千克），对于240千伏峰值射线则为0.2毫伦琴（0.52×10⁻⁷库仑/千克）。因此，这两种设备的年度暴露量都将远低于非职业工作人员的最大允许暴露量。
