Example of a real-time magnetic resonance imaging (MRI) user interface from Siemens. Similar interfaces are available for Philips and GE systems. Features include scan plane manipulation, independent device channel coloring, 3-dimensional viewing window, static image roadmaps, and quick access to select slice orientations. Figure courtesy of Christine H. Lorenz, PhD, Siemens Corporate Research, Inc., and Aravind Arepally, MD, Johns Hopkins Medical Institutions, Baltimore, Maryland.