Heart Treatment NPR's Joe Neel reports on a new method of treating blockages of heart arteries that uses radiation inside the artery itself. Two studies in tomorrow's New England Journal of Medicine offer support for wider use. Critics are concerned that more study is needed.

Heart Treatment

Heart Treatment

Audio will be available later today.

NPR's Joe Neel reports on a new method of treating blockages of heart arteries that uses radiation inside the artery itself. Two studies in tomorrow's New England Journal of Medicine offer support for wider use. Critics are concerned that more study is needed.