Abstract

A reference display system that receives information from an imaging system (e.g., a CT scanner or the like), that extracts or derives three-dimensional anatomical and/or pathological information about a part of a body (e.g., the brain or other organ) of a patient. The information is digitized in the imaging system and is introduced to a computer that is programmed to reformat the digitized information to provide as output electric signal representative of the digitized information. An optical display system (e.g., a cathode ray tube, CRT, and related circuitry) is connected to receive the output of the computer and is operable to present the reformatted information at a determined plane during an operative procedure. An operating microscope is freely located in the operative location relative to the patient during the operative procedure, the focal plane of the microscope establishing the determined plane. A way is provided to establish the spatial relationship among the imaging system, the patient, and the focal plane of the microscope; and a mechanism is provided to project the reformatted imaging system information into the optics and onto the focal plane of the operating microscope during the operative procedure, the reformatted image being displayed as an overlay upon the optical image of the body part on which the operation is being performed.

Other References

• Glaser, E. M. et al., "The Image-Combining Computer Microscope-An Interactive Instrument for Morphometry of the Nervous System", Journal of Neuroscience Methods, vol. 8, No. 1, 1983, 17-32