Gamma knife is the main treatment of stereotactic radiosurgery. It is mainly based on Co-60 radiation, and it’s the earliest high-precision stereotactic radiotherapy equipment.

Gamma ray head stereotactic radiosurgery system (head gamma knife for short) is a plurality of cobalt source mounted on a ball type helmet to focus on a certain point within the brain to form a narrow beam edge sharp gamma rays. The ball helmet usually emits 201 cobalt, 60 high doses of gamma rays. It is accurately located in a part of the field through modern imaging techniques such as CT and magnetic resonance imaging, and we call it "target"".

 

The intracranial normal tissue or diseased tissue is selectively determined as a target, and the gamma ray produced by Co-60 is subjected to a one-time large-dose focusing irradiation to cause focal necrosis or functional changes to cure diseases. It is mainly used in the treatment of intracranial small tumors and functional diseases. Body gamma knife surgery is mainly used for the treatment of various tumors of the body.

 

 

Head gamma knife is a large equipment which combines stereotactic technique and radiosurgery technique and it’s mainly used for the treatment of craniocerebral diseases. It has the advantages of no craniotomy and small damage.

 

To a certain extent, the gamma radiation is not conducive to the human body, and the scattered radiation in the therapeutic room is relatively large. Therefore, in order to better protect medical personnel from radiation hazards, it is found that tungsten heavy alloy is the first choice for manufacturing medical radiation shields, because of its high density, and environmental friendly.