During the procedure, you will be positioned on a table and your body will be held by cushions and restraints. Proton therapy can be performed in two ways, with a machine that rotates around you or with a machine that does not move. If you undergo proton therapy with a machine that rotates around you, you will be placed on a table, gently slid into the spherical opening of the machine, and the machine will rotate around you to direct proton beams, but if you undergo proton therapy with a machine that does not move, your table will move instead of the proton therapy machine. No anesthesia is involved during the procedure since it is painless.