Brain, Cranial & Nerve
Stereotactic Navigation
Image-guided technology used during cranial and spinal procedures — a 3D map that confirms where we are in the operating room in real time.
What it is
Stereotactic navigation is the surgical equivalent of GPS. Your preoperative MRI and CT are registered to your anatomy in the operating room, and instruments are tracked in three dimensions in real time. The result is millimeter-level precision in localizing a tumor, biopsy target, or hardware trajectory.
This is not a separate procedure — it is a technology used during cranial procedures (tumor surgery, biopsies, shunt placement, deep brain stimulation) and increasingly during spinal procedures (pedicle screw placement, complex deformity correction).
Why this procedure when surgery is needed
Stereotactic navigation matters most when the target is small, deep, or near critical structures. It is the difference between estimating a trajectory and confirming it. For tumor surgery, it defines the edges. For biopsy, it confirms the sample is coming from the right place. For pedicle screws, it confirms the screw is in bone rather than next to the nerve or vessel it shouldn't be.
It does not replace surgical judgment — it confirms it. Used well, it makes operations safer and more precise. It is one of several reasons modern neurosurgery has the outcomes it does.
What to expect
Navigation is a tool used inside another procedure — recovery is determined by the primary operation, not by the use of navigation.
For cranial procedures: a thin-cut MRI or CT is obtained before surgery for registration.
For spinal procedures: an intraoperative CT or O-arm spin generates the navigation dataset in the OR.
Adds minutes, not hours, to the operating room time.
Provides confirmation throughout the case rather than guesswork.
Approach
- Preoperative imaging registered to patient anatomy in the OR
- Optical or electromagnetic tracking of surgical instruments
- Real-time 3D display synchronized with the microscope view
- Intraoperative imaging (O-arm, intraoperative CT) when needed for re-registration
Typical indications
- Brain tumor resection, especially near eloquent cortex
- Stereotactic brain biopsy
- Deep-brain stimulation electrode placement
- Shunt and intracranial catheter placement
- Complex spinal instrumentation, deformity correction
- Revision surgery where anatomy has been altered
Alternatives we considered
- Fluoroscopy-only guidance (still the standard for many cases)
- Frame-based stereotaxy (older technology, still used for specific indications)
- Direct visualization without image guidance (anatomy-dependent)
Related conditions
This procedure is most often performed for:
Last reviewed: 2026-05-10· Author: Chad Tuchek, MD · Cotton O'Neil Neurosurgery and Spine Center, Stormont Vail Health
The information on this page is general patient education and is not a substitute for individualized medical advice. For urgent symptoms, call 911 or go to the nearest emergency department. For non-urgent questions, call (785) 368-0767.