Like everyone here, all my RO's, I had a few lol, never went into the radiation room, maybe once to check my mask. It's all done by the Radiation Therapists. On the other hand, during IORT, Inraoperative Radiation Therapy, the RO is present during surgery with the surgical team, along with the physicist, to do system checks, protect structures, place radiation pads, calculate dosage and RO is the one who presses the red button remotely from a leaded room in the OR to deliver radiation, along with the rest of the surgical team.

When I was consulting with my first radiation treatment, the RO was called on the phone, and had to check the set-up via her monitor. When she finished, she said tha was for prostrate cancer, and waved her hand, saying that's nothing compare to what you're going to get lol.