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What is Gamma Knife?
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Gamma Knife® surgery is a non-invasive method for treating brain disorders. It is the delivery of a single, high dose of irradiation to a small and critically located intra-cranial volume through the intact skull. It is preferred for its extreme accuracy, efficiency and outstanding therapeutic response. Today, Gamma Knife surgery is performed in hundreds of leading hospitals and clinics around the world. Around 70,000 patients undergo Gamma Knife surgery every year, and this unique procedure has an impressive scientific track record with thousands of peer-reviewed articles.
The precision of Gamma Knife radiosurgery results in minimal damage to healthy tissues surrounding the target. In some cases, Gamma Knife radiosurgery may have a lower risk of side effects compared with other types of radiation therapy. Also, Gamma Knife radiosurgery is often a safer option than is traditional brain surgery.

Gamma Knife radiosurgery is usually a one-time therapy completed in a single day.

The Gamma Knife was invented in 1968 by the Swedish Neurosurgeon Professor Lars Leksell. Gamma Knife surgery also known as radiosurgery is a minimally invasive alternative to conventional open brain surgery. Contrary to its name, the Gamma Knife is not actually a knife but an ultra-refined instrument that directs up to 201 beams of Gamma ray with pinpoint accuracy to the lesion requiring treatment.

Professor Lars Leksell

Gamma rays cross-firing

Perfexion collimator unit
  1. The PERFEXION™ is the 4th generation Gamma Knife. It expands the treatment reach, offering a wider range of treatable anatomical structure including the head and neck region.
  2. The PERFEXION™ significantly reduces treatment time and by virtue of its new collimator design. Patient comfort and workflow are much better than previous models.
  3. The new model’s planning software GammaPlan® PFX™ provides a virtually unlimited ability for sculpting the dose distribution, enabling dynamic shaping with absolute accuracy.
  4. Radiation protection takes top priority in the design of Gamma Knife. The old models of Gamma Knife already excel in radiation protection. Extra –target doses are many times less than alternative technologies. This is extremely important to protect patients especially children, pregnant women, and patients with benign brain diseases, from long-term complications of radiation. The PERFEXION takes this much further. In fact the radiation leakage is so minimal, it is now possible to have normal windows (picture) between the treatment and control rooms.



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