RefleXion x1 Beam (VIDEO) City of Hope This video is under embargo. Please login to access this video. Caption RefleXion X1 may one day enable doctors to deliver biology-guided radiotherapy (BgRT), a treatment where tumor byproducts are detected in real-time and radiation beams are aimed at each tumor to destroy it, even if the disease is moving because the patient is breathing. Credit RefleXion 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.