Tungsten-nickel-iron alloy, with its excellent radiation resistance, high density and good biocompatibility (after specific treatment), has important and extensive applications in the medical field, providing key material guarantee for the safe and efficient operation of medical diagnosis and treatment equipment.
In radiation therapy equipment, this alloy is the core material for making radiation shielding components. Radiation therapy uses high-energy rays (such as X-rays, γ-rays) to kill cancer cells, but rays also damage normal tissues, so it is necessary to strictly control the irradiation range of rays. The high density and high atomic number of tungsten-nickel-iron alloy enable it to efficiently absorb and block rays, and it can be used to manufacture shielding covers, collimators, etc. of radiotherapy equipment. The shielding cover can prevent ray leakage and protect medical staff and normal tissues around patients; the collimator can accurately limit the irradiation area of rays, ensuring that rays only act on the tumor site, improving the accuracy and safety of treatment.
In terms of medical imaging equipment, such as CT machines and X-ray machines, tungsten-nickel-iron alloy can be used to make protective shells and internal shielding structures of the equipment. CT machines and X-ray machines generate radiation during operation. The protective shell can block radiation leakage to protect operators and examinees; the internal shielding structure can reduce the interference of scattered rays on image quality, improve the clarity and contrast of images, and help doctors diagnose diseases more accurately.
In addition, in some implantable medical devices, tungsten-nickel-iron alloy after special surface treatment (such as coating modification) can be used as counterweight or structural components. For example, in small implantable devices such as cochlear implants and pacemakers, counterweight components are needed to adjust the center of gravity of the device to ensure its stable position in the body. The high density of the alloy can provide sufficient weight in a small volume, and after treatment, it has good biocompatibility, will not cause rejection reaction of the human body, and can remain in the body safely for a long time.
In the field of nuclear medicine, containers used for the preparation and transportation of radioactive drugs are often made of tungsten-nickel-iron alloy. These containers need to effectively shield rays emitted by radioactive substances to protect operators and environmental safety, and the radiation resistance of the alloy makes it an ideal choice. At the same time, its good sealing and structural stability can also ensure that radioactive substances will not leak, further improving the safety of operation.
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