Radiotherapy意思

Radiotherapy, also known as radiation therapy, is a medical treatment that uses ionizing radiation to kill cancer cells and shrink tumors. It is a common treatment for many types of cancer, and can be used alone or in combination with other treatments such as surgery and chemotherapy.

There are two main types of radiotherapy: external beam radiotherapy and internal radiotherapy (also called brachytherapy). External beam radiotherapy uses a machine to direct radiation at the cancer from outside the body, while internal radiotherapy involves placing a small radioactive source inside the body near the cancer.

Radiotherapy is a precise treatment, and doctors use advanced technology to deliver the radiation accurately and minimize the dose to healthy tissues. It is a safe and effective treatment for many cancers, and can be used to cure cancer, control its growth, or relieve symptoms.