Medical Radiation Shielding Material: Tungsten Alloy

Scientific Validation

To compare the shielding performance of tungsten alloy versus lead, experts utilized the Monte Carlo method to calculate the X-ray protection performance of tungsten-nickel-iron (W-Ni-Fe) alloys and lead. These simulations were then verified through experimental measurements. The results consistently proved that when subjected to a continuous spectrum of X-rays with a maximum energy of 100keV, tungsten-nickel-iron alloy provides superior protection compared to lead.

Key Advantages of Tungsten Alloy Shielding:

Superior Shielding Efficiency: Its shielding effect against radiation is more than 1.5 times that of lead.

High Durability: Tungsten alloy has high hardness. Unlike lead, which is soft and easily scratched or even cut with a knife, tungsten alloy maintains its structural integrity.

Excellent Physical Properties: It features a high melting point, high plasticity, low yield strength, and excellent impact toughness.

Eco-Friendly & Non-Toxic: Tungsten alloy is a "green" alloy. Unlike heavy metal lead, which is toxic to humans and contaminates the environment, tungsten alloy is non-toxic and environmentally safe.

Major Medical Applications:

1. Tungsten Alloy Shielding Containers (Isotope Vials)

Also known as tungsten alloy anti-radiation containers, these are used to store and transport radioactive medical substances. This includes radionuclides (such as Cobalt-60, Cesium-137, and Iridium-192) and radiopharmaceuticals (such as pure β-emitting therapeutic drugs like 32P, 89Sr, and 90Y). These containers ensure diagnostic effectiveness while minimizing radiation exposure to medical staff and patients.

2. Tungsten Alloy Syringe Shields

Specifically designed for nuclear medicine, these shields utilize high-density tungsten alloy to provide excellent protection during the administration of radiopharmaceuticals.

3. Tungsten Alloy Syringe Shields for PET

PET (Positron Emission Tomography) is a state-of-the-art clinical imaging technology. Syringe shields for PET are crafted from high-density tungsten alloy and lead glass. Through specialized processing, they provide exceptional shielding against short-lived radionuclides such as 18F and 11C, offering critical external radiation protection for nuclear medicine professionals.

4. Automatic Tungsten Alloy Shielding Doors

Automatic shielding doors are an effective solution for controlling medical radiation pollution. During diagnostic procedures like X-ray, CT, PET, or isotope treatments, these doors prevent electromagnetic interference and provide a robust radiation barrier, ensuring the safety of both healthcare workers and patients.