PROVIDENCE, R.I., Aug. 18, 2026 /PRNewswire/ -- GT Medical Technologies, Inc., a medical device company dedicated to improving the lives of patients with brain tumors, announced today that new data from a multi-institutional feasibility clinical trial across 15 institutions nationwide presented by Clark Chen, M.D., Ph.D., professor and director of the Brain Tumor Program at Brown University Health, suggest that a novel radiation therapy device may help improve outcomes for patients newly diagnos