W-Ni-Cu alloy protective screen, or tungsten nickel copper alloy protective screen, is a new type of lead-free medical radiation shielding screen. The biggest difference between tungsten nickel copper alloy protective screen and tungsten nickel iron alloy protective screen (W-Ni-Fe alloy protective screen) is that W -Ni-Cu alloy is non-magnetic, so that it can be used in the field sensitive to the magnetic environment, and then exert its unique anti-interference advantages.

Tungsten alloy leaf is an important component on the multi-leaf collimator, and is also the main part of an IMRT device, which can achieve conformal irradiation, thereby minimizing the leakage of radiation dose. There are at least 20 pairs of tungsten alloy leaves on the multi-leaf collimator. Wherein, IMRT is also known as intensity modulated radiation therapy.

Tungsten alloy X ray shielding device is a device for effectively shielding the X-rays emitted by the CT machine. There are shielding materials such as tungsten alloy plates and tungsten rubber blankets on such a radiation shielding device. CT machine is developed from X-ray machine, and its resolution and qualitative diagnosis accuracy rate are much higher than that of general X-ray machine, thereby broadening the adaptability range of X-ray examination and greatly improving the accuracy rate of X-ray diagnosis.

Tungsten alloy X ray shielding door is a new type of protective door, which is expected to be used to replace the original lead door, for applications in CT rooms, operating rooms, etc. Wherein, CT room has become one of the hotspots in recent months due to the novel coronavirus pneumonia epidemic as one of the screening items of COVID-2019 is CT chest. It has been reported that there are certain biological effects if X-rays are penetrating the human body. And if the amount of X-ray exposure exceeds the allowable exposure, radiation reaction may occur, and even a certain degree of radiation damage may occur.