The phrase "external beam" refers to a type of radiation treatment that is delivered from a machine outside of your body. It is used to target and kill cancer cells in a specific area of the body without the need for surgery. Full definition
A form of external beam radiation therapy that delivers a few very large fractions of radiation using new high precision technology. (sciencedaily.com)
All of the patients in the trial underwent between six and nine weeks of external beam radiation therapy for prostate cancer. (sciencedaily.com)
80 % of dogs treated with external beam radiation therapy survive for 1 year, with 72 % at 3 years. (dog-health-guide.org)