ABSTRACT
Many things and processes need to be observed to help ensure safety. A good example is a patient undergoing a scan or radiotherapy. In the case of radiotherapy, visual contact is provided either via windows, or by video cameras and monitors, depending on precautions the technician must take to protect him/her from radiation. Continuous visual contact reassures patients and enables technicians to ensure that their patients are correctly positioned for a safe diagnostic or therapeutic procedure. Direct visual access or a camera view of a site might suffice to ensure safety. However, there might be a need for an enhanced or artificial image to detect problems. Advanced systems give surgeons a three-dimensional view of the surgical site, which might provide the necessary visual fidelity to operate effectively. Today’s three dimensional systems require users to either wear head-mounted stereoscopic goggles or look into a special viewer.
