X ray collimator refers to the equivalent filtration of an immovable material before the radiation beam is emitted from the radiation source assembly or its components.
x ray collimator for X-ray tube assemblies, the intrinsic filtration is expressed by the thickness of the reference material, which makes the radiation mass expressed in the first half valence layer consistent under the specified voltage and waveform.
X ray collimator the filtration of X-ray machine itself, including the tube wall of X-ray tube, insulating oil layer and filter plate of window.
The x ray collimator is generally expressed by aluminum equivalent, that is, when a certain thickness of aluminum plate and other materials have the same amount of attenuation to X-ray, the thickness of the aluminum plate is called the aluminum equivalent of filtering material, and the unit is MMAL.
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