Home » Medical » GT Medical Brings in $16M to Change Tumor Treatment ParadigmMedicalGT Medical Brings in $16M to Change Tumor Treatment Paradigm Manny Johnson November 24, 2020 1 Views The Tempe, AZ-based company has developed GammaTile, a radiation implant employed in the last five minutes of brain tumor resection surgeries. The technology has clearance for recurrent brain tumors and newly diagnosed tumors.