Tungsten alloy post-patient collimator is present between the patient and the detector on a CT machine, which serves to ensure good image quality, minimize the interference of scattered rays from other directions, and to reduce unnecessary radiation doses for the patients. Tungsten alloy post-patient collimator improves the slice sensitivity profile by giving a more rectangular shape.

Tungsten alloy foil is an important anti-scattering component on a CT detector. And there may be 9-129 tungsten alloy anti-scatter foils on a CT detector. Research shows that anti-scattering foils made of high quality tungsten alloy is not easy to deform during long-term use, so the channel width will not change, avoiding signal distortion when X-rays pass through the deformed traditional ray channel, and ensuring imaging quality.

Tungsten alloy pre-patient collimator is the tungsten alloy collimator located in front of the X-ray tube on a CT machine, with characteristics of high density, smooth surface and good dimensional accuracy. Tungsten alloy pre-patient collimator is the first component through which X-rays pass, and is mainly used to control the thickness of the scanning layer by controlling the width of the X-ray beam in the direction parallel to the long axis of the human body. The X-rays emitted from the X-ray tube are tapered, and becomes a thin beam after passing through the slit-shaped tungsten collimator.

Tungsten alloy collimator applied for medical CT machine includes tungsten alloy pre-patient collimator and tungsten alloy post-patient collimator. These collimators have the characteristics of high density, smooth surface and good dimensional accuracy.