Ce:GAGG scintillator (IMAGE) Fujita Health University Caption Fig. 1: Ce:GAGG is a scintillator that emits yellow luminescence when irradiated with X-rays. Researchers crushed crystals into micrometer-sized particles in order to inject them into the brain. Credit Takayuki Yamashita from Fujita Health University Usage Restrictions None License Original 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.