1. Institute of Motion Science; Friedrich Schiller University; Jena Germany
2. Institute of Sport and Motion Science; University of Stuttgart; Stuttgart Germany
3. Medical Physics Group; Institute of Diagnostic and Interventional Radiology I; Friedrich Schiller University Hospital; Jena Germany
4. Department of Mechanical Engineering; Institute of Solid Mechanics; Technische Universitaet Carolo-Wilhelmina; Braunschweig Germany