title: Stereotactic localization and guidance using a machine vision technique.
abstract: Machine vision techniques (video cameras) can be used to determine the three-dimensional position of objects. This transformation can be accomplished with standard mathematical algorithms. Initial accuracy tests of stereotactic localization with video cameras were performed using a standard Brown-Roberts-Wells (BRW) phantom simulator coupled with the BRW angiographic localizer. Localization accuracy was within 1.5 mm. Potential applications of machine vision techniques include freehand stereotactic localization of the position and orientation of surgical instruments. With sufficient computer speed these techniques can be used for continuous monitoring of the position of instruments within the cranial vault.
authors.affiliation: Division of Neurological Surgery, University of Utah School of Medicine, Salt Lake City.
authors.forename: M P
authors.initials: MP
authors.lastname: Heilbrun
authors.forename: P
authors.initials: P
authors.lastname: McDonald
authors.forename: C
authors.initials: C
authors.lastname: Wiker
authors.forename: S
authors.initials: S
authors.lastname: Koehler
authors.forename: W
authors.initials: W
authors.lastname: Peters
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008953:Models, Anatomic; D013238:Stereotaxic Techniques / Q000295:instrumentation*; D014057:Tomography, X-Ray Computed; D014741:Video Recording