[Prevention of radiation pneumonia following electron beam irradiation to the thoracic wall in postoperative breast cancer--improvement of the compensating filter, shelter filter and cone].
D001943:Breast Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D011014:Pneumonia / Q000209:etiology / Q000517:prevention & control*; D011183:Postoperative Complications / Q000517:prevention & control; D011832:Radiation Injuries / Q000517:prevention & control*; D011835:Radiation Protection / Q000295:instrumentation*; D011878:Radiotherapy / Q000009:adverse effects