Tungsten syringe shielding is the medical instruments that made of tungsten alloy raw material, which is using for acting the protective effect in the medical radiopharmaceuticals injection. It uses the shielding effects on radioactive particles of high-density tungsten alloy to achieve the purpose of shielding radioactive substances. Since the density of tungsten alloy can up to 16 .5-19.0g / cm3, so it has a good shielding effectiveness to radioactive particles.

 

Tungsten syringe shielding is usually used as isotope tracer method(a microanalysis method of using radionuclides as tracers for labeling the research objects) to monitor the drug efficacy in the medical treatment. Radioisotope tracer method has a boarded application in the fields of biochemistry and molecular biology, it plays an extremely important role in helping to reveal the secrets of vivo or intracellular physicochemical process and to clarify the substances basis of life activities. Using the nuclear physics properties of radioisotopes, which continues to release the characterized radiation, to trace its position, quantities, transformation etc. in vivo or vitro by nuclear detectors at any time. The stable isotopes, while not releasing rays, but you can use the quality difference between the corresponding ordinary isotopes to determine by the spectrometer, such as Mass Spectrometer, Gas Chromatograph, Magnetic Resonance Imaging(MRI). If human beings exposure in the radioactive substances or the radioactive substances go into the bodies, it would cause cell lesions, or seriously harm to human life. Based on this, people has payed more and more attention to how to shield the radioactive substances. The tungsten alloy shielding needles can protect the people’s health from the harms of using radioactive substances.