Doctors at New York Presbyterian Hospital and Weill Cornell Medical Center have performed the world's first treatment of metastasized brain cancer using internal radiation therapy seeds with cesium 131 from Richland's IsoRay.
The seeds were implanted directly into a woman's brain to treat a cancer that had originated in the breast.
Treatment of metastasized cancers, cancers that originate in other organs, is the latest application of IsoRay's brachytherapy.
Brain cancer treatment often involves removal of the brain tumor and then waiting several weeks while patients heal from the surgery before beginning external beam radiation treatment. However, delays in treatment can increase the chance of tumor recurrence, according to IsoRay.