Radiation therapy firm Varian Medical Systems announced that it has achieved an important milestone in the research of Flash therapy technology in collaboration with Cincinnati Children's Hospital Medical Center/University of Cincinnati Medical Center Proton Therapy Center.
The combined research team utilized Varian's ProBeam proton therapy gantry treatment room in research mode to successfully complete a Flash treatment delivery -- high-dose-rate cancer treatment with photons -- to a phantom target. The test was performed to investigate whether a commercial proton therapy system in research mode could deliver a therapeutic dose at Flash dose rates of at least 100 Gy/sec to a lung lesion in a stereotactic body radiation therapy (SBRT) phantom within clinically acceptable tolerances, the vendor said.
![A 53-year-old patient (patient number four) with a recurrent pituitary adenoma with extension of a cystic component of disease to the medial temporal lobe apparent on MRI (contoured in blue), and extension of disease to the left sphenoid bone and orbital apex apparent on [68Ga]Ga-DOTA-TATE (contoured in yellow).](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/04/pituitary-tumor.QGsEnyB4bU.jpg?auto=format%2Ccompress&dpr=2&fit=crop&h=167&q=70&w=250)
