Francine L. Jacobson, MD, MPH of Brigham and Women’s Hospital advises patients to stop smoking to decrease their risk of developing lung cancer. If a patient has stopped smoking, she advises, they still have a significant risk of developing lung cancer. In the age group 55 to 80, the risk is significant enough to warrant screening on an annual basis. The screening is currently done with a very low dose of radiation in a CT scanner. Dr. Jacobson notes that for every 320 lung cancer CT screenings, one life is saved.