Tungsten alloy collimator is a key component that affects the imaging quality of gamma camera (γ camera). Tungsten alloy collimator on a gamma camera is to realize spatial positioning, so that rays from different spatial parts irradiate a specific position of the scintillator. Studies have shown that under the principle of taking into account both geometric resolution (or angular resolution) and detection sensitivity, reducing the transmission effect as much as possible is the core goal of γ camera collimator design.

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 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.