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Definition
 
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Stereotaxic Techniques definition: Techniques used mostly during brain surgery which use a system of three-dimensional coordinates to locate the site to be operated on.
stereotaxic technique definition: pertaining to types of brain surgery that use a system of three dimensional coordinates to locate the site to be operated on.
Radiosurgery definition: A radiological stereotactic technique developed for cutting or destroying tissue by high doses of radiation in place of surgical incisions. It was originally developed for neurosurgery on structures in the brain and its use gradually spread to radiation surgery on extracranial structures as well. The usual rigid needles or probes of stereotactic surgery are replaced with beams of ionizing radiation directed toward a target so as to achieve local tissue destruction.
stereotaxic radiosurgery definition: (STAIR-ee-o-TAK-tik...) A radiation therapy technique involving a rigid head frame that is attached to the skull; high-dose radiation is administered through openings in the head frame to the tumor while decreasing the amount of radiation given to normal brain tissue. This procedure does not involve surgery.
radiosurgery definition: A radiation therapy technique that delivers radiation directly to the tumor while sparing the healthy tissue.
Stereotactic Systems, Biopsy, Mammographic definition: Systems consisting of a biopsy unit with needle guides and an integral computer for communicating lesion coordinates. These systems include stand-alone units as well as units that mount onto an existing mammographic radiographic unit.
Stereotactic Systems, Radiosurgical, Gamma definition: Radiosurgical stereotactic systems that use gamma radiation sources.
Stereotactic Systems definition: Systems that combine diagnostic images, (e.g., MRI, CT) with adequate means for precise localization of probes or other devices during open or percutaneous procedures. These systems may include a high-performance graphic computer, a 3-dimensional digitizer, and interactive software.
INSTRUMENT, STEREOTAXIC definition: A stereotaxic instrument is a device consisting of a rigid frame with a calibrated guide mechanism for precisely positioning probes or other devices within a patient's brain, spinal cord, or other part of the nervous system.
Stereotactic Headframes definition: Devices that are affixed to a patient's skull to allow precise localization of an area within the brain targeted for a neurosurgical or radiosurgical procedure. These units typically consist of a head ring assembly with fixation screws or pins, an arc system for setting target coordinates and localizer frames and adapters for CT, MRI and other imaging systems.
12 further definitions >>
Examples
 

Anatomical knowledge of the structures to be targeted and of the circuitry involved is crucial in stereotactic functional neurosurgery.

Marc N. Gallay et al.

Brain Structure & Function 212 (6), 01 Aug 2008

The present study was undertaken in the context of surgical treatment of motor disorders such as essential tremor (ET) and Parkinson’s disease (PD) to precisely determine the course and three-dimensional stereotactic localisation of the cerebellothalamic and pallidothalamic tracts in the human brain.

Marc N. Gallay et al.

Brain Structure & Function 212 (6), 01 Aug 2008

The course of the fibre tracts to the thalamus was traced in the subthalamic region using multiple staining procedures and their entrance into the thalamus determined according to our atlas of the human thalamus and basal ganglia [Morel ( 2007 ) Stereotactic atlas of the human thalamus and basal ganglia.

Marc N. Gallay et al.

Brain Structure & Function 212 (6), 01 Aug 2008

Stereotactic three-dimensional coordinates were determined by sectioning thalamic and basal ganglia blocks parallel to stereotactic planes and, in two cases, by correlation with magnetic resonance images (MRI) from the same brains prior to sectioning.

Marc N. Gallay et al.

Brain Structure & Function 212 (6), 01 Aug 2008

The major contributions of this study are to provide: (1) evidence that the bulks of the cerebellothalamic and pallidothalamic tracts are clearly separated up to their thalamic entrance, (2) stereotactic maps of the two tracts in the subthalamic region, (3) the possibility to discriminate between different subthalamic fibre tracts on the basis of immunohistochemical stainings, (4) correlations of histologically identified fibre tracts with high-resolution MRI, and (5) evaluation of the interindividual variability of the fibre systems in the subthalamic region.

Marc N. Gallay et al.

Brain Structure & Function 212 (6), 01 Aug 2008

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