Home > Cancer > Perfection Radiation Treatment for Brain Cancer Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Aug 06, 2010 by Cleveland Clinic, Views: 1817 Cancer doctors at Cleveland Clinic are treating the brain tumors through a new radiation treatment called perfection. This procedure involves delivering a high dose of radiation to a small target. In this case, 192 radiation beams are pointed around the head towards the tumor. Each beam carries a low dose of radiation but where they intersect the dose is high enough to kill the tumor without damaging healthy tissue around it.