Minimally invasive surgical methods make operations much more comfortable for heart patients. Princeton researcher Dr. Bogdan Georgescu (40) is working to improve state-of-the-art imaging processes that make such operations possible. Thanks to Georgescu's inventions, Siemens is now one of the first companies in the world to offer medical imaging systems that automatically produce 3D computer models of patients' hearts. The new algorithms used here can also simulate blood flow as a fourth-dimension feature, which enables physicians to better align treatment methods with the needs of individual patients. A native of Romania, Georgescu now works at Siemens Corporate Technology in Princeton, U.S.