What is Gamma Knife Surgery, how is it performed, and what are the risks?

Gamma Knife radiosurgery is usually a one-time procedure that takes about one day to complete.

Why is it done this way?
Standard brain surgery (neurosurgery), which entails incisions in the scalp, a hole in the skull and membranes surrounding the brain, and dissection into brain tissue, is typically a safer choice. This type of radiation therapy is typically used when:

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