Blood-Brain Barrier Open to Chemotherapy (IMAGE) Washington University School of Medicine Caption Washington University neurosurgeon Eric C. Leuthardt, MD, and others have discovered another benefit of laser surgery for patients with glioblastomas, one of the most difficult cancers to treat. In addition to killing the tumors with heat, the technology bypasses the brain's protective cover to allow for up to six weeks of chemotherapy. Credit Robert Boston 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.