It may seem counter-intuitive, but I chose a
location that did a much lower volume, and with a small staff.
I felt like the rush of lots of patients would add to the chaos potential, and that seeing potentially different techs every day would lessen their attention level.
Mind you that the focus of the clinic I chose is prostate cancer, although they do other treatments as well. And yes, if the folks were less than competent, it could cause troubles down the road.
In reading the articles on the NYC (big name hospital), it seemed clear that the big issue there was the volume - the errors were made by a poorly trained tech when he was on duty (not every day), as he supposedly did not remember he was supposed to change the filters that limited the radiation between patients. I will say I was VERY attentive of what they did each day.
This goes back to a comment some months ago about how "anal" the RT staff was at a member's RT clinic - that, in my mind, is one of the marks of a process being applied correctly.