我院目前使用ZJ-10直线加速器,能量为8MV-X线和6、8、10MeV电子线。电子线照射筒最大面积12×15cm,乳腺癌胸壁照射野面积大而不规则,如用常规方法,设野多,重复性差,在接野处往往出现热点或欠剂量区。 由于上述原因,我们改用长距离照射方法,设备由我院自制。 特制一只180cm×55cm×10cm简易活动床,床下装万向轮,置于地,可使源皮距SSD延长至200cm,光野面积随之扩大。 Our hospital currently uses ZJ-10 linear accelerator, energy 8MV-X line and 6,8,10 MeV electronic line. The largest area of ​​electron beam irradiation tube 12 × 15cm, Breast cancer chest wall irradiation area is large and irregular, such as using conventional methods, set up more wild, poor reproducibility, in the wild are often hot or under-dose area. For the above reasons, we use the long-distance irradiation method, the equipment made by our hospital. A special 180cm × 55cm × 10cm simple bed, caster under the bed, placed on the ground, the source can be extended from the SSD SSD to 200cm, light area will be expanded.