The CyberKnife Robotic Radiosurgery System is a non-invasive alternative to surgery for the treatment of both cancerous and non-cancerous tumors anywhere in the body, including the prostate, lung, brain, spine, liver, pancreas and kidney. The treatment – which delivers high doses of radiation to tumors with extreme accuracy – offers new hope to patients who have inoperable or surgically complex tumors, or who may be looking for a non-surgical option. To date, more than 50,000 patients have been treated and more than 150 systems are installed worldwide.

Initially radiosurgery was used to treat brain tumors and when technical improvements allowed for radiosurgery to be used any where in the body, the possible treatment sites were expanded to include cancer involving the spine. With more experience and further improvements in targeting tumors, the possible sites or types of cancers that may benefit have expanded dramatically. The most common sites are noted below:

Benign
Brain
Breast
General
Head and Neck
Liver

Lung
Metastases
Pancreas
Prostate
Spinal

Radiation doses commonly used in gamma knife are noted here

A recent review of hypofractionated radiation doses from Timmerman (Seminars In Rad Onc Volume 18, Issue 4, Pages 215-222 (October 2008) are noted for single fraction, three fractions and five fractions