Professor David Lomas of the Department of Radiology at the University of Cambridge and Dr Martin Graves of Cambridge University Hospitals NHS Foundation Trust have developed a new 3D joystick for browsing volumetric computer tomography images. The inspiration came from the way ultrasound transducers are operated by gliding it around the target area. See for yourself in this video:
Press release: Taking control of medical imaging …
Project description: Controller For Navigating 3D Medical Imaging Data