A Guide to Radiation Therapy

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More information from your American Cancer Society

We have a lot more information that you might find helpful. Explore www.cancer.org or call our National Cancer Information Center toll-free number, 1-800-227-2345. We’re here to help you any time, day or night.


Your American Cancer Society also has books that you might find helpful. Call us at 1-800-227-2345 or visit our bookstore online at www.cancer.org/bookstore to find out about costs or to place an order.

National organizations and websites*

Along with the American Cancer Society, other sources of information and support include:

Radiological Society of North America, Inc. (RSNA)
Website: www.radiologyinfo.org

    Has a lot of free information on radiation therapy and medical imaging tests, as well as a database you can use to find a medical imaging or radiation oncology provider near you

American College of Radiology (ACR)
Toll-free number: 1-800-227-5463
Website: www.acr.org

    The website has information on radiology procedures, radiation safety, FAQs, and a radiology glossary. It also offers a listing of accredited treatment facilities.

American Society for Radiation Oncology (ASTRO)
Toll-free number: 1-800-962-7876
Website: www.rtanswers.org

    Online brochures on radiation therapy are available, as is a locator to find registered radiation oncologists

National Cancer Institute (NCI)
Toll-free number: 1-800-422-6237 (1-800-4-CANCER)
TTY: 1-800-332-8615
Website: www.cancer.gov

    The website includes accurate, up-to-date information about cancer for patients, their families, and the general public that covers a variety of cancer-related topics. It also provides clinical trial information and a matching service for patients.

*Inclusion on this list does not imply endorsement by the American Cancer Society.

No matter who you are, we can help. Contact us anytime, day or night, for cancer-related information and support. Visit www.cancer.org or call us at 1-800-227-2345. We want to help you get well.

Last Medical Review: 06/30/2015
Last Revised: 06/30/2015