Top 3 answers to Gamma Knife® questions

We've noticed an increase in the number of questions from patients about Gamma Knife® since Martin Kemp of Spandau Ballet and East Enders began to talk about his own treatment.

Here are the top three questions with answers about Gamma Knife®.

1. What conditions can be treated by Gamma Knife®?

Despite the name, Gamma Knife® isn't actually a knife at all. It's a sophisticated piece of equipment which allows surgeons to deliver radiotherapy with precision in order to treat various neurological problems. Conditions which are suitable for Gamma Knife® treatment include

  • Acoustic Neuroma
  • AVMs (Arteriovenous Malformations)
  • Meningioma
  • Metastatic Tumours
  • Pituitary Adenoma
  • Trigeminal Neuralgia

2. Where can I find Gamma Knife® specialists in London?

Ian Sabin is generally recognised as the leading gamma knife specialist in London. He and his colleagues can be found at the Gamma Knife Centre at Barts and the London NHS Trust. If you have a question about Gamma Knife or would like to arrange a consultation with Ian Sabin call 01865 339402.

3. What are the key benefits of Gamma Knife® radiosurgery over conventional surgical techniques?

  • The risks of infection, haemorrhage and leakage are eliminated.
  • None of the scarring or disfigurement which results from conventional neurosurgery. Treatment can nearly always be delivered as a single treatment over the course of less than a day which avoids the need for multiple hospital visits.
  • A single night's stay in hospital as opposed to the extended stay surgery often necessitates.
  • Gamma Knife® radiosurgery is directed very specifically at the target which spares most of the adjacent normal brain tissue from exposure to unnecessary excess radiation.
  • Return to work, driving, and other normal social activities within a few days.


An AVM or arteriovenous malformation forms when arteries connect directly to veins. This direct connection forms a high-pressure shunt or fistula. The veins are not able to handle the pressure of the blood coming directly from the arteries. The veins stretch and enlarge to create a “nidus”. Usually there are multiple feeding vessels in an AVM and many draining veins.

Full medical glossary

An AVM or arteriovenous malformation forms when arteries connect directly to veins. This direct connection forms a high-pressure shunt or fistula. The veins are not able to handle the pressure of the blood coming directly from the arteries. The veins stretch and enlarge to create a “nidus”. Usually there are multiple feeding vessels in an AVM and many draining veins.

Full medical glossary
The basic unit of genetic material carried on chromosomes. Full medical glossary
The internal or external loss of blood from a blood vessel. Full medical glossary
Invasion by organisms that may be harmful, for example bacteria or parasites. Full medical glossary
A large abdominal organ that has many important roles including the production of bile and clotting factors, detoxification, and the metabolism of proteins, carbohydrates and fats. Full medical glossary

Associated with the nervous system and the brain.

Full medical glossary
Energy in the form of waves or particles, including radio waves, X-rays and gamma rays. Full medical glossary
The treatment of disease using radiation. Full medical glossary
A group of cells with a similar structure and a specialised function. Full medical glossary
Relating to the urinary tract. Full medical glossary
Relating to the veins. Full medical glossary