electromagnetics and the brain

Hi , I'm a new user of CST microwave , and I would like to simulate the electromagnetic effects of a mobile phone on Brain .
I already made a simple dipole antenna with a discret port , But I would like to know if I had to put a waveguide port on the brain to see the effects the antenna could have on , Or if I just have to creat a brain sphere and start the transcient solver .
I didnt really use a technical language but hope that you'll understand me .
Many thanks

no need to do that i guess. i have seen on there example simulation the simulated cellphone radiation to the head. i think if you mean the radiation to the head, thats it. just go to help then search for examples, its there.