Like all the treatments , the machines are just there to help you, yep they are noisy. cold and frightening , but imagine if it wasn't there for you.
I had 25 rounds of rad, the staff at least at my hospital were wonderful, chatted before and after , made it seem normal , thats how you have to see it as, like getting your nails done.
Your boobs are nothing special to them , get to now your team and then the person is the one that matters we use to talk about what song could be played while lying down getting zapped , maybe your hospital offers that too.
Im 50 yrs old and most of the techs are the same age as my grown kids 24 and 25 , so I treated them like my kids ,talk , joked and asked them about themselves.
I finished treatment in late January this year, had to go back for something else in October, a couple of the techs were walking pass and stopped to say Hello, which I thought was nice considering the number of people they deal with.
Good Luck.