Gamma Knife
device · 1968 · Digital age
Radiosurgery with beams of gamma rays (Leksell).
What it is made of
- Cobalt-60 sources — has part. About 200 sources in a hemisphere.
- Collimator helmet — has part. It brings the rays to one point.
- Stereotactic head frame — has part. It holds the head precisely in place.
Principles and materials it uses
- Radioactivity — uses. Cobalt-60.
- Cobalt — is made of. The sources are cobalt-60.
- Steel — is made of. The collimator helmet is steel.
What it is a kind of
- Radiation therapy — is a kind of. Radiosurgery.