Types of Radiation Oncology Treatment

The Department of Radiation Oncology at the Samuel Oschin Comprehensive Cancer Institute offers radiation therapy. The type of therapy a patient receives depends on the type of cancer, its stage and where it is located.

The center uses the latest technologies that are designed to keep the radiation dose as low as possible to minimize unpleasant side effects. The treatments include:

External Beam Radiation Therapy

External beam radiation therapy uses machines to direct a beam or beams through the skin and to the cancer site or surrounding areas. This type of radiation therapy destroys tumors or cancer cells while minimizing the risk of radiation exposure to healthy organs and tissue.


Brachytherapy is a form of radiotherapy that places a radiation source (radioactive seeds) inside or next to the area needing treatment. It allows for the precise delivery of high-dose radiation to the targeted area while preventing healthy tissue from unnecessary exposure. We offer several types of brachytherapy treatments: