When Derek Shepherd died in 'Grey's Anatomy,' Meredith held one doctor most responsible. Learn who it was and when they were on the show.

An algorithm developed by scientists at UC San Francisco and UC Berkeley did better than two out of four expert radiologists at finding tiny brain hemorrhages in head scans—an advance that one day may ...

CT Scans in Kids Linked to Leukemia, Brain Cancer Risk Radiation may triple risk of brain cancer and leukemia later on, study finds.