![]() ![]() Stereotactic radiation therapy is very effective in treating small tumors such as those in the head and brain.Įxternal beam therapy is painless. This way, the ideal amount of radiation needed to destroy tumor cells is delivered directly to the tumor growth, while the amount of exposure to the area surrounding the tumor is minimized. The therapy targets a tumor from many different directions so the beams of radiation converge on the tumor. Stereotactic radiation therapy involves focusing the radiation beam on a small area and delivering very high doses. ![]() High-energy radiation is used to treat other deeper cancers. ![]() Low- energy radiation does not penetrate very deeply into the body and is used mainly to treat surface tumors such as skin cancer. It is used to treat many types of tumors including cancers of the head and neck area, breast, lung, colon, and prostate.ĭepending upon tumor location, different levels of radiation are used for external beam therapy. External beam therapy is the radiation therapy treatment option used for most cancer patients. A radiation oncologist makes decisions regarding the type of system that is best suited to treat a specific cancer patient. Systems which produce different types of radiation for external beam therapy include orthovoltage x-ray machines, Cobalt-60 machines, linear accelerators, proton beam machines, and neutron beam machines. External Beam Radiation Therapy (Teletherapy)Įxternal beam radiation therapy is radiation delivered from a distant source, from outside the body and directed at the patient's cancer site. There are two main types of radiation therapy: external beam radiation ( teletherapy) and internal radiation therapy ( brachytherapy). Acknowledgements Types of Radiation Therapy ![]()
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