Search Result for: 外部放射治疗指南
A Guide to External Radiation Therapy
Radiation therapy (radiotherapy) is a cancer treatment that uses high doses of radiation to kill cancer cells and stop them from spreading. At low doses, radiation is used as an x-ray to see inside your body and take images.
Radiation therapy does not kill cancer cells immediately. It takes days or weeks of treatment before cancer cells start to die. After that, cancer cells keep dying for weeks or months after radiation therapy end.
Radiation therapy can be external beam (when a machine outside your body aims radiation at cancer cells) or internal (when radiation is put inside your body, in or near the cancer cells).
