Stereotactic surgery
Surgery in which a system of three- dimensional coordinates is used to locate the site to be operated on. Stereotactic surgery is used in neurosurgery (and neurological research) for locating points within the brain. This is usually done by using an external, three-dimensional frame of reference based on the Cartesian coordinate system. A stereotactic needle biopsy is a biopsy in which the spot to be biopsied is located three-dimensionally, the information is entered into a computer, and the computer calculates the information and positions a needle to remove the biopsy sample.

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stereotaxic surgery any of several techniques for the production of sharply circumscribed lesions in specific areas of pathologic tissue in deep-seated structures. The site to be worked on is localized with three-dimensional coordinates; precise images are obtained with computed tomography or magnetic resonance imaging. An arc guidance system may be used to direct an electrode or other lesion-producing instrument. Methods of producing lesions include heat, cold, x-rays, charged particles such as protons, and ultrasound. Called also stereotaxy.

Medical dictionary. 2011.

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