Hi ShazS,
i hope your surgery went well!
I am a Radiation Therapist (but new to being a cancer patient). The first step is to have your planning session, this involves lying you down on a specialised board with your arms above your head, everything can be adjusted to suit you so speak up if something digs in etc, the 2 therapists will take measurements of your breast and do a bit of technical talk to each other and some drawing on you, you will have a quick CT scan and then usually some little permanent tattoo dots are given, this helps to ensure you are in the same position each day. The planning session is the longest session at about 40 minutes and you may also see nurses on this day which will go through side effects of treatment, these mainly being a skin reaction similar to that of sunburn and fatigue, they will also recommend some cream for your skin usually sorbelene but moo goo and qv are excellent too. The treatment itself is very quick, In and out within 15 mins, most of this is taken to get you back into the same position as your CT, the main thing is to stay still, don't help them to move you and breathe normally, the machine rotates around you, doesn't touch you at all, you don't feel or see anything during the treatment, just hear a bit of a buzzing noise, the therapists are watching you on monitors from outside and can communicate with you via intercom if needed. I hope this helps, feel free to ask me anything else