Radiation treatment

Jimmy Carter to undergo radiation for cancer on his brain

"I'm ready for anything and looking forward to a new adventure," said Carter, appearing upbeat and making jokes as he openly talked about his cancer during a news conference.

So far, the pain has been "very slight" and Carter said he hasn't felt any weakness or debility. Still, he will cut back on his work with the Carter Center and will give the treatment regimen his "top priority." His first radiation treatment was set for Thursday afternoon.