Is gamma knife surgery an option for a brain tumor?

Yes: Yes, it is an option for a brain tumor. Discuss further with your doctor if this is something available/feasible to be done in your case.

It depends: Gamma knife is a computerized way of delivering high dose radiation to a tumor without much of the radiation hurting the brain. For benign tumors like meningiomas and acoustic neuromas, tumors can be controlled for 10 to 20years and maybe more. Tumors have to be smaller than 3 cm (1 1/2 in) in diameter. Gamma knife can also slow the growth of malignant brain tumors.