In an effort to facilitate learning of its AI platform Watson, IBM has bought a medical imaging company, in order to show its Watson lots (billions) of medical images, to improve its diagnostics ability. The system could prove very helpful in assisting doctors to make diagnostics. See details here:

http://www.technologyreview.com/news/540141/why-ibm-just-bought-billions-of-medical-images-for-watson-to-look-at/