05871445 is referenced by 244 patents and cites 230 patents.

A system for determining a position of a probe relative to an object such as a head of a body of a patient. The head includes a surface such as a forehead having a contour. Cross sectional images of the head are scanned and stored as a function of the forehead contour. If the forehead contour does not appear in the scan images, then the position of the forehead contour relative to the scan images is determined with an optical scanner and a ring. During surgery, the optical scanner also determines the position of the forehead relative to the ring. An array for receiving radiation emitted from the probe and from the ring generates signals indicating the position of the tip of the probe relative to the ring. A stereotactic imaging system generates and displays an image of the head corresponding to the measured position of the tip of the probe. The system may also display scan images from different scanning technologies which scan images correspond to the same position in the head.

System for indicating the position of a surgical probe within a head on an image of the head
Application Number
Publication Number
Application Date
September 7, 1995
Publication Date
February 16, 1999
Richard D Bucholz
St. Louis
Finnegan Henderson Farabow Garrett & Dunner L
St Louis University
A61B 5/05
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