Peter Attia· MD
gamma knife is a is a instead of using a linear accelerator it's actually using cobalt 60 like I described earlier but you have multiple small sources that can actually be used very high resolution cobalt essentially so you're doing the same thing but instead of using a linear acceleratorbased treatment it's it's using cobalt so is that used anymore or is it there still are centers that use it it still works very well for what it is but the focus is very narrow there's a lot of children's hospitals and all that i think we're still using it but the linear accelerator which I is abbreviated lac the lacbased stereotactic radio surgery for the most part has sort of taken over from that because it can do all the same things and also have more flexibility to do more than just CNS