Call us 24/7

Advertising on our site helps support our mission. We do not endorse non-CTCA products or services.

Video: How does radiation therapy work?

Radiation therapy
In this video, we explain how radiation therapy is designed to target a tumor, while sparing the healthy tissue surrounding it.

Radiation therapy is among the oldest forms of cancer treatment. It uses highly concentrated and targeted energy—similar to X-rays—to damage and eventually kill cancer cells.

Radiation therapy may be used before other treatments to shrink tumors, or after other treatments to destroy remaining cells. It may be used as a palliative treatment to shrink tumors that may be causing painful or challenging symptoms.

In this video, Marnee Spierer, MD, Chief of Staff and Chief of Radiation Oncology at our Phoenix hospital, explains how radiation therapy is designed to target a tumor, while sparing the healthy tissue surrounding it.



Assess your cancer risk with our Risk Management Tool.