医疗照射是指在医学检查和治疗过程中被检者或病人受到电离辐射的内、外照射。施行这种诊断或治疗的医生应加强对受检者或病人的放射防护。医疗照射从所获得的利益来衡量必须具有正常理由，既达到诊断或治疗的目的，又要把照射限制到可合理达到的最低水平，避免一切不必要的照射。
结论孝感市医疗照射水平低于湖北省医疗照射水平。
The medical radiation level in Xiaogan City is lower than that in Hubei Province.
本文报道了芜湖市1996年和1998年医疗照射频度水平。
Frequency of medical radiation exposure in Wuhu city in 1996 and 1998 was reported in this article.
掌握上海市临床核医学诊断与治疗的医疗照射水平现状及其发展趋势。
To grasp the level and the trend of medical exposure in the field of clinical nuclear medicine in Shanghai.
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