Jason Sheehan, UVA Health (IMAGE) University of Virginia Health System Caption Neurosurgeon Jason Sheehan, MD, PhD, of UVA Health, is pioneering the use of focused ultrasound to treat glioblastoma, the deadliest brain tumor. Credit UVA Health Usage Restrictions May be used to accompany news coverage of the glioblastoma research. All other uses require express written permission from UVA Health. 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.