Skip Navigation
Print This Page
Share this page: More

External Beam Radiation Therapy

What is external beam radiation therapy?

External beam radiation therapy delivers radiation from outside the body, using a machine called a linear accelerator. The most common type of radiation therapy for brain tumors, it can be directed to the tumor and nearby brain tissue or to the whole brain. External beam radiation therapy is also called traditional radiation therapy.

Whole-brain radiation is sometimes used to treat metastatic brain tumors. It is used to treat multiple metastatic brain tumors throughout the brain, including tumors that are too small to be seen on a scan.

External beam radiation therapy is usually given Monday through Friday over several weeks. A certified radiation therapist administers the treatment and monitors the patient’s progress. Most visits take 15 to 45 minutes, although the actual treatment time is only a few minutes.

For more information, contact the Johns Hopkins Comprehensive Brain Tumor Center at 410-955-6406.


#1 in Neurology and Neurosurgery in the U.S. for Four Consecutive Years

US News and World Report Best HospitalsThe Johns Hopkins Hospital ranked #1 in the nation in 2013 and is the only hospital in history to be ranked #1 for 21 years in a row by U.S. News & World Report.


Scheduled for Neurosurgery at Johns Hopkins?

Watch the patient experience video before you come


Out-of-State and International Patients - Find Out More


© The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.

Privacy Policy and Disclaimer