The process is similar to multiple-exposure photography where several exposures are made on a single piece of film, but the holograms encode the location as well as the intensity of each exposure. A hologram must be illuminated correctly to be seen as a bright, undistorted image without any compromise in its three-dimensionality. The classic method to reconstruct a hologram is to use laser light identical to that with which the hologram was made. There are several alternatives which use white light instead of a laser A hologram will split ordinary incoming light into a colorful spectrum. One solution uses the hologram as a filter to reduce the incoming light to one color the image becomes sharper and dimmer.
Medical images require a sharp, bright image.
Another approach is to sacrifice the vertical information in a hologram, which causes the image to disappear when viewed from above or below. Medical images must be viewable from vertical as well as horizontal perspectives. The Voxbox pre-splits the light into an inverted spectrum and the hologram recombines the light into a bright and sharp image, preserving both vertical and horizontal perspectives. CT and MR data are collected in the format required, thereby eliminating the need for the physician to modify his routine practice. Expensive scanner time will not be wasted and the patient's radiation dose will not be changed.