PET/CT is a complete dependent equipment of PET radiopharmaceutical, which reflects cell metabolism, cell receptor activity, nucleic acid synthesis in the nucleus and changes in cell genes at the molecular level to achieve early analysis and determination of tissue lesions.

Therefore, PET radiopharmaceuticals are a necessary treatment for radiation therapy, and medical staff and patients are inevitably exposed to such drugs. PET radiopharmaceuticals are radioactive drugs containing short half-life positron nuclides, and the radiation released is a special, invisible, and intangible substance. These rays has specific energy, different penetration ability and alienation ability of material, which would cause physical or chemical or biochemical changes to material or organism.

 

 

If a man is exposed to large doses of radiation for a long time, his cells, organs and tissues will be damaged. Therefore, the packaged positron drugs should be equipped with necessary tungsten PET shields, which includes ventilation cabinets, packaging equipment, activity meter and pollution detector.

 

As tungsten has high density because, high radiation shielding characteristics, good protective performance, tungsten PET shields are able to absorb a variety of radioactive ray to improving the protection conditions and reduce the radiation damage to medical personnel and patients.

 

Apart from that, tungsten alloy has high mechanical strength, plasticity, and it can be processed and shaped according to special needs of special occasions to make the shielding pieces of various different shapes and different properties, different ratio of tungsten alloy shields. And tungsten alloy is environmental friendly, so it has been widely used in the medical shields.