title: An adaptor to the Leksell stereotaxic instrument for digital coordinate determination in radiography.
abstract: Special perspex adaptors with radiopaque reference structures have been constructed to fit to the Leksell stereotaxic instrument. These structures are visualized on X-ray film in a radiographic examination like angiography or encephalography. The films obtained in two projections at arbitrary angles and focus-film-distances are placed on a digitizing table for the determination of the stereotaxic coordinates of selected targets. The reference structures and the targets are marked with a cursor whereupon a desk top computer performs the calculation of the stereotaxic coordinates. The system allows a rapid, simple and accurate coordinate determination in stereotaxic radiography using the Leksell stereotaxic instrument.
authors.affiliation: Department of Neuroradiology, Karolinska Hospital, Stockholm, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Bergström
authors.forename: T
authors.initials: T
authors.lastname: Greitz
authors.forename: T
authors.initials: T
authors.lastname: Ribbe
mesh_terms: D002533:Cerebral Angiography / Q000295:instrumentation*; D003201:Computers; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging; D008838:Microcomputers; D013238:Stereotaxic Techniques / Q000295:instrumentation*