May 11, 2011 5:40 am New Deep Freeze Surgery Removes Irregular Heart Tissue A surgery that involves extreme cold is being used to treat Atrial Fibrillation, a heart rhythm problem. US & World Videos 1:11 Total body nuclear medicine PET scan continues to evolve 1:02 Google productivity expert authors guide to boost wellness 2:23 Watch: Feeling and showing the impact of organ donation 1:07 Watch: Autism specialist discusses rise in children on the spectrum 1:10 Bay Area app monitors problems for people living with Parkinson's