Study calls heart imaging into question for mild chest pain

A big federal study finds that people who see a doctor for chest pain have no less risk of suffering a heart attack, dying or being hospitalized later if they are checked with a fancy newer type of CT scan rather than a simple treadmill test or other older exam. CT scans, a type of X-ray that gives a very detailed look at heart arteries, have been used for about a decade without evidence they are better or worse than older tests.