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X ray collimator structure

The X ray collimator is an electromechanical optical device installed in front of the output window of the X ray tube. Its main function is to control the illumination field of the X-ray tube output line, so as to meet the requirements of X-ray imaging and diagnosis. Reduce the projection range, avoid unnecessary doses; and absorb some scattered rays to improve the clarity of the effect.
Collimating film range of use
Structurally, the early active spectrometer consisted of two teams of independently opened and closed lead leaves arranged in two layers perpendicular to each other. The activity of each pair of lead leaves is centered on the X-ray center. The opening and closing of the lead leaves of the two teams respectively controlled the length and width of the irradiation field, and the purpose of flexibly adjusting the size and shape of the irradiation field was achieved. In order to further improve the occlusion effect, the internal structure of the spectrometer is increased from two groups of “#”-shaped lead leaves, and the upper and lower two groups of lead leaves in the same direction can synchronize activities, but their activities are different, and the purpose is to make two The radiation fields formed by the team’s lead leaves are always consistent. In addition, a square tube is added between the two sets of lead leaves to absorb the scattered rays generated in the spectrometer; the spectrometer is also equipped with a filter plate for absorbing soft rays, and the filter plate of non-stop thickness can be replaced as needed.

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Author:Alina