Astrocytoma resection using an interactive frameless stereotactic wand: an early experience

Area of Science:

• Neurosurgery
• Medical Technology
• Oncology

Background:

• Astrocytomas necessitate precise surgical resection for improved patient outcomes.
• Traditional stereotactic systems can be cumbersome and costly.
• Advanced localization tools are crucial for maximizing tumor removal, especially in eloquent brain areas.

Purpose of the Study:

• To evaluate the efficacy and safety of a novel frameless, interactive stereotactic localizing wand for astrocytoma resection.
• To assess the system's ability to achieve complete tumor resection and its impact on patient outcomes.
• To determine if this system is a viable, cost-effective alternative to traditional frame-based stereotactic devices.

Main Methods:

• 18 patients with astrocytoma underwent tumor resection using the frameless, interactive stereotactic localizing wand.
• The system provided real-time, multi-display localization information (2D/3D) for tumor boundary outlining.
• Surgical procedures included craniotomy modification, intraoperative physiologic mapping, and electrode placement in select cases.

Main Results:

• Complete tumor resection (98-100%) was achieved in all 18 patients, with 44% involving eloquent areas.
• The system enabled accurate volumetric, near en bloc resection in 94% of cases.
• At 6 weeks post-surgery, 78% of patients were stable, with minimal morbidity observed.

Conclusions:

• The frameless, interactive stereotactic localizing wand is an effective tool for precise astrocytoma resection.
• It offers a low-cost, minimally invasive alternative to frame-based systems, achieving high rates of complete resection.
• The system demonstrates potential for improving surgical outcomes in complex brain tumor cases.