X-ray imaging contrast detection board

Abstract

The invention discloses an X-ray imaging contrast detection board. The detection board includes a bearing platform and a contrast step die body; the bearing platform is of a stepped solid structure and includes a plurality of steps, and thickness differences of every two adjacent steps are equal; the contrast step die body is a stepped die body and includes a plurality of steps, and thickness differences between every two adjacent steps of the contrast step die body are equal; the contrast step die body is detachably mounted on the steps of the bearing platform; after the contrast step die body is mounted on the steps of the bearing platform, the distribution direction of the steps of the contrast step die body is perpendicular to the distribution direction of the steps of the bearing platform. By means of the detection board, the contrast range and the grayscale range of detecting X-ray imaging can be widened through the combination of the contrast step die body and the bearing platform, the steps requiring imaging can be freely selected according the demands of a user to meet imaging requirements, and the imaging accuracy is improved.

Description

technical field [0001] The invention relates to the field of X-ray imaging, in particular to an X-ray imaging contrast detection board. Background technique [0002] In the medical digital camera imaging system, the distribution range and resolution of image grayscale determine the effect of image resolution. In order to visually check the range and resolution of imaging grayscale, a specific imaging phantom is required, also known as imaging contrast detection board. . [0003] Medical digital imaging systems mainly include two forms: Computed Radiography (CR) and Digital Radiography (DR). [0004] (1) The working principle of the CR system: the first step, X-ray exposure makes the IP image board produce image latent image; the second step, sends the IP board into the laser scanner for scanning, and the latent image of the IP board in the scanner After being excited, it is converted into visible light, and after being read, it is converted into an electronic signal, which...

AI Technical Summary

Problems solved by technology

[0005] Regarding the gray scale and contrast test of CR / DR digital imaging, relevant institutions and companies at home and abroad have carried out a lot of research. There are already some ready-made phantoms (testing boards), which are fixed by a fixed number of test round holes. When using it, you can only choose the round hole you need according to the existing contrast of the detection board. The selection range of contrast is small, and it is inconvenient to use. It cannot meet the specific requirements of the imaging contrast of different operating objects in the medical field. Moreover, the imaging requirements of extremely low contrast cannot be met, and the ease of use is low.

Therefore, the existing contrast detection board cannot accurately match the imaging contrast requirements of the operating object during use, resulting in low accuracy of imaging results

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