乳腺癌根治术后胸壁复发占10%左右,治疗及时与否直接影响患者的生存时间与生存质量。局部复发的治疗是比较棘手的问题,常规方法是化疗或局部的再次放疗。由于我国部分地区购置的加速器不具备电子束照射功能,利用X线切线野照射胸壁时存在着剂量不均、射野衔接困难、肺脏受量过多 The recurrence of chest wall after radical mastectomy accounts for about 10%. Whether the treatment is timely or not directly affects the patient’s survival time and quality of life. The treatment of local recurrence is a more difficult problem, the conventional method is chemotherapy or local re-radiotherapy. Accelerators purchased in some areas of China do not have electron beam irradiation function, and there are dose unevenness, difficult convergence of the radio field, and excessive lung volume when using the X-ray tangential field to irradiate the chest wall.