FPD (flat panel detector) assistant structure

Abstract

The invention provides an FPD (flat panel detector) assistant structure. The FPD assistant structure comprises a track connected with an FPD, at least two fixing parts located on the track and positioning parts located between the FPD and a to-be-detected object, wherein the FPD moves on the track and is fixed through the fixing parts; after the FPD is fixed by the fixing parts, local images of the to-be-detected object are acquired by the FPD and comprise positioning images of the positioning parts, and the obtained local images of the to-be-detected object are spliced according to the positioning images. The FPD assistant structure can improve the position accuracy of the FPD, is wide in applicable range, can collect images of a larger-area static object or a large animal, and can realize rapid and accurate splicing of the local images to acquire a larger global image.

Description

technical field [0001] The invention belongs to the field of flat panel detectors and relates to an auxiliary structure of a flat panel detector. Background technique [0002] Digital Radio Graphy (DR for short) is a new technology of X-ray photography developed in the 1990s. With its remarkable advantages such as faster imaging speed, more convenient operation, and higher imaging resolution, It has become the leading direction of digital X-ray photography technology and has been recognized by clinical institutions and imaging experts all over the world. [0003] Generally speaking, a flat panel detector is a detector that uses semiconductor technology to convert X-ray energy into electrical signals to generate X-ray images. Its energy conversion method can be divided into two types: indirect conversion flat panel detector (indirectFPD) and direct conversion flat panel detector (direct FPD). Among them, the amorphous selenium flat panel detector is a direct flat panel dete...

AI Technical Summary

Problems solved by technology

However, limited by factors such as cost, especially the size cost of the TFT panel and the performance degradation caused by the large size, the effective exposure area of ​​a single flat panel detector is limited.

For the X-ray detection imaging of large-scale industrial structural parts and large animals, in order to obtain a complete global image, it is necessary to stitch multiple partial images. Among them, the actual stitching operation is difficult, and the stitching quality is easily affected by the movement accuracy. , thus affecting the efficiency and quality of obtaining the global image

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