1. Medical Physics Laboratory, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece
2. Medical Device and Simulation Laboratory, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
3. Nuclear Magnetic Resonance Surgical Laboratory, Department of Surgery, Center for Surgery, Innovation and Bioengineering, Massachusetts General Hospital, Boston, MA 02114, USA
4. Department of Radiology, Harvard Medical School, Boston, MA 02115, USA
5. Athinoula A. Martinos Center of Biomedical Imaging, Charlestown, MA 02129, USA