Reid J A, MacDonald J C
Oral Surg Oral Med Oral Pathol. 1984 Feb;57(2):219-24. doi: 10.1016/0030-4220(84)90216-0.
A dosimetric and photographic record of the pattern of radiation on the walls of a dental x-ray operatory was obtained. This indicates that there is an overlap of the radiation fields with "hot spots" on the side wall opposite the patient's head, with the rest of the room receiving minimal exposures. In the course of this investigation, it was found that use of the long-cone x-ray machine resulted in less radiation reaching the walls of the room. The presently accepted concept of mAs per week proves to be less relevant than the number of films being taken.
获得了牙科X射线操作间墙壁上辐射模式的剂量测定和摄影记录。这表明辐射场在患者头部对面的侧壁上存在重叠并有“热点”，房间的其他部分受到的照射极少。在这项调查过程中，发现使用长锥形X射线机可减少到达房间墙壁的辐射。目前公认的每周毫安秒概念的相关性不如所拍摄胶片的数量。
