Simulation

Simulation is a data gathering session usually done with a CT simulator.  They position you on the simulator which replicates the treatment machine and take the CT.  This gathers data about the exact geometry of your anatomy and your tumor or the location where your tumor was and any other areas they want to target.  For me the specific targets were the clips left to mark the location where the tumor had been and the seroma filling the surgical cavity.  Then they put reference marks on you with dot-like tattoos or sometimes markers so that they can consistently replicate the exact position. 

They take the data and develop the treatment plan, which means they try various arrangements of the radiation beams to create a dose distribution that delivers the amounts of radiation prescribed to the areas they want to treat while avoiding areas they don't want to expose, as much as possible. 

The radiation oncologist and a radiation therapist should be present.  You should feel free to ask whatever you want about what they are doing. 

I found escapist imagery very helpful.

Sunangel,

Different places do have different procedures so what I described may be what you had Monday.  If this visit is with the rad nurse she may be going over what you should expect and any instructions for such things as skin care.

Redsoxfan,

How are you doing?  This year is looking good!  ...as long as the injury plague has been reversed!