Who is a good candidate for it?

Ideal candidates are patients with small, well-defined intracranial tumors (e.g., acoustic neuromas, meningiomas, or metastases) less than 3 cm in diameter, or with arteriovenous malformations and trigeminal neuralgia. Contraindications include tumors larger than 3 cm, lesions that compress critical brain structures causing significant mass effect, or patients who cannot tolerate stereotactic frame placement. A prior MRI and consultation with a neurosurgeon are mandatory to confirm eligibility.