- American Brachytherapy Society-americanbrachytherapy.org. Provides information about the use of brachytherapy to treat breast CA
- The American Society for Therapeutic Radiology and Oncology (ASTRO) –1800-962-7876
- Mammosite – info on mammosite radiation 1-877-566-9866
- Reston Hospital Radiation Therapy Department –703-689-9330
- RT Answers – Explains how radiation oncologists use radiation therapy to treat cancer safely and effectively.