The thermal radiation effect depends on the shape of specific surface, and is evaluated by view factors.
辐射换热效果与具体辐射表面形状有关，常用辐射换热因子来衡量。
Objective: to surveil the individual dose that the X-ray doctors received from radiation, evaluate and analyse the effect of preventing radiation and the affecting factors.
目的：监测放射科医师个人剂量当量，评价与分析放射防护效果和影响因素。
Results: (1) All the factors affecting single slice ct also have the same effect on MSCT, besides, there are other special factors affecting radiation dose in MSCT.
结果：(1)所有影响单层面CT剂量的因素仍然影响M SCT，此外在MSCT中还有一些特殊因素影响CT剂量。
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