Neuronavigation

What it is

Neuronavigation is an image-guided system that functions like a GPS for the brain during surgery. Using the patient's MRI or CT scans, it shows the surgeon precisely where their instruments are in relation to the tumor and surrounding structures, helping locate the glioma and plan a safe approach.

Understanding Neuronavigation

Before and during surgery, the patient's imaging is loaded into a navigation system and registered to the patient's actual anatomy. As the surgeon works, the system tracks the position of instruments and displays them on the imaging in real time — much like a GPS shows a car's location on a map. This helps the surgeon plan the most direct, safe route to the tumor, define its borders, locate deep or small tumors, and stay oriented relative to critical structures. Neuronavigation improves precision and can make surgery safer and more effective, contributing to greater safe tumor removal. It is often combined with other tools (such as functional mapping and intraoperative imaging). One limitation is that the brain can shift slightly during surgery, which intraoperative MRI or updated imaging can help account for. Understanding neuronavigation in gliomas clarifies how image guidance enhances surgical precision.

Why it matters

Understanding neuronavigation helps patients and families see how an image-guided "GPS" enhances glioma surgery — helping the surgeon precisely locate the tumor and plan a safe approach, improving precision and safety.