For patients with a certain kind of life-threatening heart disease, the best treatment is usually a very invasive procedure. But now, doctors at the University of Ottawa Heart Institute and the Ottawa Hospital's Cancer Centre have combined two techniques to provide a new kind of treatment that doesn't require any surgery at all. It's called 'non-invasive cardiac radio-ablation' and it's a first in Canada. To learn more about this procedure, Adrian Harewood spoke to Calum Redpath cardiac electrophysiologist in the Division of Cardiology at the University of Ottawa Heart Institute and Graham Cook, a radiation oncologist at The Ottawa Hospital Cancer Centre.