γ camera tungsten alloy collimator now mostly refers to the SPECT collimator, rather than the traditional gamma camera collimator where the head cannot rotate. SPECT is a relatively new imaging system compared to traditional gamma cameras. While in any gamma camera, the role of the tungsten alloy collimator is radiation guidance and radiation protection.
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So, what is the main role of tungsten alloy collimator in the gamma camera? According to a certain rule, the distribution of radionuclides is projected onto the crystal of the head of gamma camera. γ camera tungsten alloy collimator is usually a single-hole or porous collimator made of high-quality tungsten alloy material. Its ding is to let the γ rays incident from a certain direction to pass through and absorb the γ rays incident from other directions, so as to project the distribution of radionuclides onto the crystal of the head of γ camera according to a certain rule.
