Stereotactic Navigation
Stereotactic Navigation - Related Videos
10:35
Stereotactic Radiosurgery for Gynecologic Cancer
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Cited by 14 •
2012
Stereotactic body radiotherapy (SBRT) involves image-guided, ablative radiation delivered to cancer targets refractory to chemotherapy or to conventional radiation treatment. The robotic-armed Cyberknife SBRT system, using sophisticated target localization, delivers hypofractionated radiation doses capable of sterilizing cancer targets. This article will consider new therapeutic roles of SBRT for gynecological cancers.
09:00
Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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Cited by 3 •
2015
Stereotactic Electroencephalography (SEEG) is an operative technique used in epilepsy surgery to help localize seizure foci. It also affords a unique opportunity to investigate brain function. Here we describe how SEEG can be used to investigate cognitive processes in human subjects.
05:19
Practical Methodology of Cognitive Tasks Within a Navigational Assessment
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Cited by 1 •
2015
Children who have complex communication needs can benefit from the use of a speech-generating device (SGD). Cognitive skills were identified as having an impact on the ability to navigate between levels of SGDs. This protocol describes the steps needed for Speech-language Pathologists to assess cognitive skills and navigational abilities.
07:54
Applying Stereotactic Injection Technique to Study Genetic Effects on Animal Behaviors
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Cited by 15 •
2015
Stereotactic injection of lentiviruses expressing cDNAs or shRNAs can modulate gene expression in specific brain areas of mice. Here, we present a protocol to combine stereotactic injections with behavioral tasks, such as the Open Field Test (OFT) and the Forced Swim Test (FST).
05:08
A Stereotactically Guided Ablation Technique for Auditory Cortex Removal in Rats
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2025
This video demonstrates a stereotactically-guided surgical procedure for ablating the auditory cortex in a rat. The steps include identifying anatomical landmarks in an anesthetized rat secured in a stereotactic frame, creating a window on the skull above the auditory cortex, aspirating the cortical layers, and providing post-operative care to assess the impact of the ablation on sound processing.
FAQs
Accuracy depends on registering preoperative MRI or CT images to the patient’s actual anatomy. This step creates the spatial relationship needed to interpret the patient’s position within the image-based coordinate system. Once registration is established, tracked instruments can be viewed relative to anatomical structures, allowing the planned target and trajectory to remain aligned with the patient during the intervention.
The coordinate system provides a consistent way to describe the location of a brain target and the path toward it. By linking coordinates with anatomical images, the system supports planning around defined structures rather than relying only on direct visual access. This spatial framework is especially important when instruments must reach deep targets while avoiding critical areas.
Trajectory planning determines how an instrument approaches the intended target and helps account for nearby critical structures. Navigation maintains the relationship between the planned path, the images, and the tracked tool as the procedure proceeds. In practice, this can support precise access while limiting unnecessary tissue disruption, which is relevant to biopsies, electrode placement, and lesioning.
A typical workflow begins with preoperative MRI or CT acquisition, followed by registration of those images to the patient’s anatomy. The target and an intended trajectory are then defined within the three-dimensional dataset. During the procedure, the system tracks the instrument relative to the images, helping the operator follow the planned route and maintain orientation toward the target.
Preoperative MRI or CT provides the anatomical information used for planning and localization. The navigation system then incorporates surgical instruments that can be tracked relative to those images. Together, the imaging dataset and instrument tracking allow the operator to relate tool position to the selected target and surrounding anatomy, supporting guided access during a neurosurgical intervention.
In neuroscience, the technique supports brain biopsy, deep brain stimulation, electrode placement, and lesioning, among other interventions. These applications use image-based targeting to reach selected brain regions and help avoid critical structures. The same approach also contributes to studies of brain function and neurological disease by enabling more controlled placement of instruments or therapeutic devices.