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Computer assisted brain surgery for small lesions in the central sensorimotor region
H F Reinhardt1, M Trippel, B Westermann
1Neurosurgical University Clinic, Kantonsspital Basel, Switzerland.
Acta Neurochirurgica
|January 1, 1996
Summary
A new optical navigation system enables minimally invasive surgery for brain lesions. This technology precisely locates and removes tumors and angiomas, avoiding damage to critical brain areas and improving patient outcomes.
Area of Science:
- Neurosurgery
- Medical Technology
- Image-Guided Therapy
Background:
- Minimally invasive resection in the central sensorimotor strip is challenging due to the critical function of this brain region.
- Conventional stereotaxy may have limitations in guiding surgical access to small, deep-seated lesions.
Purpose of the Study:
- To demonstrate the efficacy of a novel optical navigation device in microsurgical procedures.
- To assess the feasibility of less invasive resection for subcortical lesions in the sensorimotor strip.
Main Methods:
- Six microsurgical procedures were performed using a new optical navigation system guided by high-resolution CT imaging.
- The system utilized light-weight, freehand pointing instruments with +/- 1 mm accuracy for precise lesion localization and removal.
- Surgical access involved oblique, transsulcal approaches to minimize damage to surrounding brain tissue and vessels.
Main Results:
- Five brain tumors and one cavernous angioma were successfully located and resected with minimal invasiveness.
- No additional sensorimotor deficits were observed post-surgery.
- Two patients experienced immediate improvement in pre-operative paresis.
- Cortical stimulation in three cases identified infiltrating tumors, enabling maximal resection.
Conclusions:
- Computer-aided surgery (CAS) with optical navigation provides precise anatomical localization for small central lesions, facilitating minimally invasive neurosurgery.
- The demonstrated optical navigation system shows significant potential for improving surgical precision, quality control, and training in neurosurgery.