Gamma Knife Radiosurgery

Gamma Knife Radiosurgery is a form of stereotactic radiosurgery that uses computer-guided planning and radiation. It is used to treat primary and secondary brain tumours, vascular abnormalities and other lesions in the brain. Neurosurgeons worldwide have applied this radiosurgical approach for over five decades. Unlike traditional open brain surgery, this radiosurgery technique utilises precise gamma rays without the need for an incision or general anaesthesia. Consequently, the risks of bleeding, morbidity, and mortality are significantly lower compared to open surgery. 

Using three-dimensional computerised imaging, a highly concentrated dose of gamma radiation is delivered precisely to destroy the target cancerous cells or abnormal tissues. Tumours typically reduce in size over months or years, while lesions like abnormal tangles of blood vessels gradually close off. The main benefit of gamma knife radiosurgery is its high precision with minimal radiation impact on surrounding healthy tissues, through the use of a stereotactic frame. 

The procedure is typically performed on an outpatient basis. Nonetheless, an overnight hospital stay is sometimes required following treatment. While some patients may experience mild and temporary tenderness or swelling around the frame fixation sites post-treatment, most can resume their usual activities the following day.