Radiosurgery is a form of radiation therapy that focuses gamma rays or x-rays on a small area of the body. Other types of radiation therapy are more likely to affect nearby healthy tissue whereas radiosurgery better targets the abnormal area.
It is a medical procedure that allows non-invasive treatment. The initial application of radiosurgery was in treatment of lesions in the brain, a technique also known as stereotactic radiosurgery (SRS). In addition to brain tumours, it has also been shown to be beneficial for the treatment of some non-cancerous conditions, including functional disorders such as arteriovenous malformations (AVMs) and trigeminal neuralgia.
Radiosurgery is also used for tumours in others parts of the body (extracranially), known as SBRS. Gamma Knife is the most widely used technology for SRS and is considered the gold standard.