The GammaTile (IMAGE) NorthShore University HealthSystem Caption This small, 2 cm x 2 cm radioactive tile (GammaTile) is placed directly into the patient's brain where the tumor was removed to deliver immediate treatment directly to the area most at risk of recurrence while protecting healthy brain tissue. Credit GT Medical Technologies, Inc. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.