GT Medical Technologies

Tempe, Arizona-based medical device maker. Flagship GammaTile is an FDA-cleared bioresorbable radiation implant placed during brain tumor surgery. ROADS RCT data at ASCO 2026: 12-month tumor surgical bed recurrence 1.3% vs 15.4% standard of care; 24-month OS 61.7% vs 35.7%. Founded 2017 by Barrow Neurological Institute team.