Getting External Beam Radiation Therapy | 合法醫療器材資訊網

2019年12月27日—Externalradiation(orexternalbeamradiation)isthemostcommontypeofradiationtherapyusedforcancertreatment.Amachineisusedto ...

External radiation (or external beam radiation) is the most common type of radiation therapy used for cancer treatment. A machine is used to aim high-energy rays or particles from outside the body at the tumor. External beam radiation is given most often as photon (x-ray) beams and less often as particle (proton, neutron) or electron beams (see below).

Radiation technology allows the very careful delivery of external beam radiation therapy. The machines focus the radiation beam on the exact location in such a way to maximize the radiation reaching the cancer, but also to affect normal tissues as little as possible.

External radiation is usually done during outpatient visits to a hospital or treatment center. Most people get external radiation therapy over many weeks. Usually, they visit the treatment center every weekday (Monday through Friday) for a certain number of weeks. But some people...