For glioblastoma, radiation doses of 60 gray are used for the primary mass, with potentially 46 gray for surrounding edema, while aiming for minimal or zero dose to the rest of the brain.

“believe it or not 30 gray sounds high to you which it is uh but for a glyopblastoma we use 60 gray but granted that's not to the whole brain that'll be to the either if it's an unresectable patient it's the primary mass and then we will give maybe 46 gray to the to the perurmoral edema uh but then the rest of the brain is getting much less hopefully zero in many cases”