Surgical GPS: Neuronavigation in Brain Surgery
Just as a pilot trusts the ILS system while landing an aircraft, modern neurosurgeons now rely on neuronavigation systems that can guide them to millimetric precision in areas the eye cannot see. This technology integrates images taken before surgery with the patient’s head in real time during the operation, instantly positioning the surgeon’s instruments on a virtual map. We asked Neurosurgery specialist Doc. Dr. Caner Sarıkaya about this.
What is neuronavigation?
Neuronavigation is, in its simplest definition, a three-dimensional positioning system used during brain surgery. The brain map derived from MRI or CT images is processed by dedicated software and transferred to the operating room. Thanks to reference points placed on the patient’s skull, the system displays in real time exactly which anatomical structure corresponds to the pen-shaped probe in the surgeon’s hand.
“Neuronavigation is like handing a torch to a surgeon walking in the dark — the brain tissue stops being a veil of fog and becomes a territory with a map.”
In which cases is it used?
Neuronavigation provides a life-saving advantage most notably in high-grade gliomas, meningiomas, and deeply located metastatic tumors. The system is particularly critical for tumors near speech or movement centers such as the motor cortex and the Broca and Wernicke areas, where even a millimeter of error on the surgeon’s part can result in permanent paralysis or loss of speech.
It has also become standard practice in endoscopic ventriculostomies used to treat hydrocephalus, in the placement of deep brain stimulation electrodes, and in epilepsy surgery.
Does Neuronavigation Replace the Surgeon’s Experience?
Neuronavigation does not replace the experience of the surgeon; rather, it is an advanced technological tool that enhances the surgeon’s precision and safety during the operation. Similar to a GPS system, neuronavigation helps guide the surgeon through complex brain anatomy using real-time imaging and preoperative MRI or CT scans. However, critical decisions such as choosing the safest surgical pathway, protecting vital brain structures, and determining the extent of tumor removal still depend entirely on the surgeon’s knowledge, skill, and experience. The best surgical outcomes are achieved when advanced technology and experienced surgical judgment work together.
Is Neuronavigation a New Technology?
Although neuronavigation is considered a modern advancement in neurosurgery, the technology itself is not entirely new. The first neuronavigation systems were developed in the late 1980s and became more widely used during the 1990s. However, with recent advances in imaging quality, computer processing, artificial intelligence, and surgical software, modern neuronavigation systems have become far more precise, faster, and safer than ever before. Today, neuronavigation is one of the most important technologies in advanced brain and spine surgery, often used together with surgical microscopes, intraoperative imaging, and robotic-assisted systems.
Assoc. Prof. Dr. Caner Sarıkaya provides advanced neurosurgical care in Istanbul, specializing in brain tumor surgery (beyin tümörü ameliyatı), cervical spine surgery (boyun fıtığı ameliyatı), lumbar disc herniation surgery (bel fıtığı ameliyatı), and spinal cord tumor operations (omurilik tümörü ameliyatı). He also performs lumbar spinal stenosis surgery (kanal daralması ameliyatı) using modern microsurgical techniques.
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