The gamma-knife radiosurgery treatmentwhich is also referred to as stereotactic radiosurgery is a distinct type of therapeutic radiology. Even though it is termed as thegamma knifesurgery, it is not an actual surgery in the true sense of the term. It makes use of highly-focused gamma rays for treating small to medium sized lesions that are normally present in the brain. Several beams of gamma radiation coalesce together to offer an intense dose of radiation without the need for a surgical incision. Thegamma knife procedureis called a surgery as the outcome of this treatment is exactly similar to a brain surgery but fortunately, a neurologist would use a single-session radiation beam for treating the lesions. The beams are accurately focused on reaching the tumor or lesion and the affected area is treated with a minimal effect on the health tissue lying in close vicinity. The gamma-knife radiosurgery treatment lasts for about 2 to 4 hours and is often used for treating the tumors as well as lesions in the brain. Your neurologist may also recommend it for treating other conditions such as trigeminal neuralgia. It is a condition where an undesired pressure on the trigeminal nerve leads to muscular spasms along with terrific facial pain and acoustic neuroma. Acoustic neuroma is a noncancerous tumor in the brain impairing the functions of the nerves in charge of hearing abilities. The gamma knife procedure is used in situations where the tumors or lesions in the brain are not possible to reach through any conventional surgical process.