乳腺癌胸壁切线野照射技术,其方法大多比较繁杂,操作步骤甚多,本文将一种较简便的等中心半束定位投照技术介绍如下: 1 操作技术 按模拟机操作常规准备。嘱患者患侧手抱头仰卧于特制的乳房切线架上(见图1),体中线与纵向激光定位线束重合或平行。根据患者体廓的弯曲度调整板面的角度,以尽量消除体廊的曲面,使之趋平(纵向),记下每个患者切线架的刻度,以便在每次摆位时固定放置。由放疗医师按设计的腋锁内乳野在患者体表画野。在内乳野外界向内1～1.5cm处画1条纵向虚线(见图2),乃内切线野的边界,上达锁骨上野下缘,下至乳房皱折向下2cm(若胸壁有较长 Breast cancer chest wall tangent field radiation technology, most of its methods are more complicated, many steps, this article will be a more simple center half-beam positioning projection technology introduced as follows: 1 operating techniques according to simulator operation routine preparation. Zhu Huanzhe patients complain side supine in a special breast trimmer rack (see Figure 1), body alignment and longitudinal laser alignment harness coincide or parallel. Adjust the angle of the plate according to the curvature of the patient’s body so that the surface of the body corridor is minimized and flattened (longitudinal). Make a note of the scale of each patient’s trimmer so that it can be fixed during each positioning. By radiotherapy physicians according to the design of the axillary cavity breast field in the patient’s body painting field. Inside the breast field 1 ~ 1.5cm inward draw a vertical dotted line (see Figure 2), is the boundary of the inscribed line field, up to the lower edge of the collarbone on the ground, down to the breast fold down 2cm (if the chest wall is more long