Abstract: A visualization system using a computer to provide a patient with a view of their internal anatomy based on medical scan data. The medical scan data is obtained from three-dimensional scanning system, such as Magnetic Resonance Imagery (MRI), Computer-Aided Tomography (CAT), Positron Emission Tomography (PET) and Nuclear Magnetic Resonance (NMR). The patient is presented with such data in an interactive virtual reality environment. The patient acts upon indications of the ailment within the virtual reality environment by using "tools" or other devices that produce a visual representation of the ailment being diminished in nature. This creates a psychoneuroimmunological response in the patient which aids the patient in combatting and recovering from the disease. Embodiments of the invention enhance the PNI response by providing more numerous and realistic sensory input in the form of, e.g., three-dimensional audio and high resolution volume rendering and animation.