In this day and age, you can easily share photos through Dropbox, notes in Evernote, or spreadsheets via Google Drive with anyone. But good luck helping two doctors at two different hospitals to see the same patient records online. Instead, when a patient goes to a medical center for the first time, they often have to repeat tests they've undergone before—such as a computerized tomography (CT) scan, which uses X-ray technology to produce cross-sectional images of the body.