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GAMMA KNIFE
For a complete list of treatable conditions by the Gamma Knife, click here. About Gamma KnifeThe 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. Every year, more than 50,000 patients receive this life saving treatment and over 500,000 patients have now been treated with Gamma Knife radiosurgery worldwide. The Gamma Knife has become an essential part of most prestigious neurosurgical clinics in Asia, Europe and the U.S.A…
The Perfexion1. 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. |
The Brain Centre
Canossa Hospital No 1 Old Peak Road Hong Kong T: (852) 2522 2332 F: (852) 2522 2663 |

The Gamma Knife is a non-invasive treatment for many types of brain tumors and vascular malformations. A typical treatment takes 3-4 hours and the average period of hospitalization is 1-2 days. Most patients return to their normal lifestyle or back to work after a few days.
The Brain Centre (TBC) is constantly at the forefront of new technology and innovations, recognized internationally as a centre of excellence and serves as training venue for Elekta. In 1987, TBC was the first clinic to introduce MRI imaging to Hong Kong and in 1995 was the first and so far the only Centre to offer Gamma Knife radiosurgery in Hong Kong. In 2007 TBC upgraded to the latest model, the Perfexion. The latter excels in accuracy, patient comfort, radiation protection and workflow. If you require more information about Gamma Knife Radiosurgery sent to you by regular mail, please go to