CT equipment, reference detector and ray detection method for ray source

Abstract

The invention provides a reference detector. The reference detector is provided with an incident window used for enabling the rays to pass, the reference detector also comprises a detection component,and the rays are arranged in the incident window in a penetrating manner and are projected onto the detection component; the detection component determines a focal position of a ray source accordingto ray energy information detected in a projection region of the rays projected onto the detection component; and / or determines ray intensity of the ray source according to the ray energy informationdetected in a preset region of the detection component, wherein the incident window is provided with at least two edges extending along different directions so as to limit the projection region and / orthe preset region. Therefore, the focal position of the ray source can be tracked and the ray intensity of the ray source can be detected, and further imaging of a CT system is corrected, so that anartifact is avoided from appearing during image imaging due to ray output fluctuation, and image imaging quality is improved. The invention also provides CT equipment and a ray detection method for the ray source.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a radiation detection method for CT equipment, a reference detection device and a radiation source. Background technique [0002] At present, imaging equipment such as a CT machine usually emits X-rays to scan the human body through a ball tube, and receives and detects the X-rays through a detector. However, during the scanning process of imaging equipment such as CT machines, the position of the tube will be shifted due to factors such as temperature, which will cause fluctuations in the output of X-rays, resulting in changes in the intensity of X-rays and the position of the focal point. If the original X-ray intensity and focus position data emitted by the tube are still used in image reconstruction, image artifacts will be caused, resulting in poor image quality, which is not conducive to the doctor's diagnosis. Contents of the invention [0003] Based on this, ...

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Problems solved by technology

[0003] Based on this, it is necessary to provide a reference for tracking the focus position and ray intensity of the tube to avoid image artifacts in order to solve the current problem of image artifacts caused by X-ray output fluctuations caused by tube position offset. The detection device also provides a radiation detection method for a radiation source, and provides a CT device containing the above-mentioned reference detection device

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