Last month, President Trump signed an executive order making the development and regulation of artificial intelligence a federal priority. But one area where artificial intelligence is already taking hold is health care. Doctors are already using A.I. to spot potentially lethal lesions on mammograms. Scientists are also developing A.I. systems that can diagnose common childhood conditions, predict whether a person will develop Alzheimer's disease and monitor people with conditions like multiple sclerosis and Parkinson's disease. Dr. Eric Topol, a cardiologist and the founder and director of the Scripps Research Translational Institute, has long heralded this convergence of technology and medicine.