The Use of a Tungsten Alloy Shield of Nuclear Medicine

Tungsten alloy is excellent material which is used to shield the x-rays and gamma rays . The shield tungsten alloy can be used in the medical field such as shield Brachytherapy and positron emission tomography.

Brachytherapy, also known as in internal exposure. When the human body is difficult to track the tumor tissue ,it can be used to inject (one of brachytherapys ) to replace radiotherapy. Injecting radioactive particles can be accurately placed evenly around the tumor. Before and after treatment, radioactive seeds are stored in tungsten alloy products, so that doctors and patients from harm.

Positron emission tomography (PET) .tracer isotope will be injected to the human body, and brain tissue encounter electrons positron isotope released ,the annihilation effect will occur, resulting in almost the opposite direction of the pair of rays γ- can a special device to be detected, whereby the position of the distribution of the isotope can be obtained, which is a method for diagnostic nuclear medicine techniques. When X-rays illuminate the body structure, PET can show the individual chemical functions of internal organs. PET of DNA to be injected, the injection from the syringe into the patient. As DNA passes through the patient's body, it will release gamma rays, gamma camera lights by chemical activities and internal organs such cells can be seen. Tungsten alloy and tungsten can be applied to PET syringe needle shielding.


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