Intracranial image-guided neurosurgery: experience with a new electromagnetic navigation system

Area of Science:

• Neurosurgery
• Medical Imaging
• Surgical Navigation Technology

Background:

• Image-guided neurosurgery aims to integrate CT/MRI data into the operative field for precise anatomical and pathological definition.
• Neuronavigation systems provide surgeons with critical spatial information for enhanced surgical accuracy.

Purpose of the Study:

• To evaluate the NEN-NeuroGuard neuronavigation system prototype.
• Assess its usefulness, integration ease, reliability, and accuracy in neurosurgical procedures.

Main Methods:

• Utilized a prototype NEN-NeuroGuard system employing pulsed DC electromagnetic fields.
• Miniaturized sensors attached to surgical instruments determined their spatial location.
• Evaluated system performance in 24 intracranial procedures.

Main Results:

• Successful use in 24 intracranial procedures for gliomas and metastases.
• Real-time display of surgical maneuvers on pre-operative CT/MR images without stereotactic frames.
• Mean registration errors: 1.3 mm (MRI) and 1.5 mm (CT); average intra-operative error: 3.2 mm.

Conclusions:

• The NEN-NeuroGuard system is a user-friendly and reliable tool for image-guided neurosurgery.
• Electromagnetic technology overcomes line-of-sight limitations of optical systems.
• Facilitates planning, craniotomies, and access to deep-seated lesions with minimal trauma.