In May I 2024 had five courses of SBRT delivered by a Varian TrueBeam STX, which apparently was their most recent model. The RO and the radiation techs were gushing over it like someone would over a new car or a baby. 🙂

The overall process was amazingly smooth. When the beam "lost sight" of the fidicual markers in one session for some reason, such as organ movement, etc., it halted the process until it was back on target. Incredibly accurate to within less than 1mm. I have not had a followup with the RO yet, but my PSA during my annual exam last week was .17, down from 14.8 about a year ago.