American Society for Therapeutic Radiology and Oncology

ASTRO provides up-to-date cancer research, brochures and videos to patients and patient advocates, and has a directory where patients can locate radiation oncologists in their area. A new Web site, www.rtanswers.org, includes disease-specific information on cancers commonly treated with radiation, descriptions of the radiation treatment team, explanations of external beam radiation therapy and brachytherapy, clinical trials information and details on side effects.