Mobile Augmented Reality and 3D Printing to Involve Patients in Treatment Decisions for Prostate Cancer

For prostate therapy, the involvement of patients in the decision process is of increasing importance. However, transferring knowledge to the patient often proves to be di cult because the concerned organ is not visible and the available image data is too complex to interpret for non-physicians. To improve the situation, our work aims to developing a tool for simple knowledge transfer between physician and patient. By combining an augmented reality (AR) application on a tablet computer with a 3D print of a prostate, details about the status quo are conveyed in a simple to understand manner. Our AR application supports two di↵erent interaction paradigms that are compared in a user study with 11 participants. The study aimed at evaluating usability (ISONORM) and intuitive use (QUESI). Our results show, that completion of the given tasks was done faster on the touch display (mean = 120s, s = 33s) compared to virtual buttons (mean = 253s, s = 82s). In addition, the data collected from the questionnaires revealed that display-based interaction is better suited for the defined task.