Thomas Kahn, MD, is Professor and Chairman of the Department of Diagnostic and Interventional Radiology at the Leipzig University Hospital, Germany. After studying medicine in Berlin, he started his residency at the Department of Radiology, Klinikum Rechts der Isar, Technical University Munich, and continued his work at the Department of Radiology, University of Dusseldorf. In 1989 he undertook a research stay in the medical industry and gained his Habilitation in Diagnostic Radiology from the University of Dusseldorf in 1991. In 1996 he was a Visiting Professor at the Radiology Department of the Brigham and Women's Hospital, Harvard Medical School, Boston. In 1999 Professor Kahn took up his present position in Leipzig. Harald Busse, PhD is currently Head of the MR Research Group at the Department of Diagnostic and Interventional Radiology, Leipzig University Hospital, Germany. After studying physics and medicine in Bonn, he gained his Diploma in Physics in 1991 and his Doctoral Degree in Natural Sciences from the University of Bonn in 1995. Dr. Busse subsequently worked as a Postdoctoral Research Fellow at the Department of Chemistry, University of Southern California, Los Angeles; the Departments of Laser Medicine and Diagnostic Radiology, Dusseldorf University Hospital; and the Fraunhofer Institute for Applied Information Technology, St. Augustin, Germany. In 2000 he moved to his present position in Leipzig. The planning and control of minimally invasive diagnostic and therapeutic procedures using magnetic resonance imaging are among the main focuses of his research.