X-ray source array, x-ray tomography system and method

Abstract

The embodiment of the invention discloses an X-ray source array, an X-ray tomography system and a method. Wherein, the X-ray source array includes a plurality of individually packaged cold-cathode X-ray source tubes, and the arrangement trajectory of each cold-cathode X-ray source tube is arc-shaped; the X-ray tomography system includes the aforementioned X-ray source array and detection and the center of the circle where the arrangement track of the X-ray source array is located is on the detector, so that the distances from the cold cathode X-ray source tubes at different arrangement positions in the X-ray source array to the detector surface are the same; at the same time, The X-ray source tomography method provided by the embodiment of the present invention makes the tube current of each cold cathode X-ray source tube consistent, and achieves the effect that the doses from the X-ray sources at different angles to the target object tend to be consistent.

Description

technical field [0001] Embodiments of the present invention relate to the field of X-ray scanning imaging, and in particular to an X-ray source array, an X-ray tomography system and method. Background technique [0002] The cold cathode X-ray source has the characteristics of low power consumption, easy integration, and high time resolution. Multiple cold cathode X-ray sources integrated in the X-ray source array can generate X-ray focal spots at different positions. The way of point pulse exposure realizes the movement of the focal point, so that the projection images of different angles can be obtained without moving the X-ray source, and static tomographic imaging can be realized. [0003] The existing X-ray source array adopts an overall packaging method, and each cold-cathode X-ray source is placed linearly in a special vacuum chamber, and an external vacuum pump is required to maintain the vacuum environment in the chamber. However, the distances from the X-ray source...

AI Technical Summary

Problems solved by technology

However, the distances from the X-ray sources at different positions to the surface of the scanned object are quite different, and the magnifications of the projected images received by the detectors from different angles are different, which makes the quality of the reconstructed image poor; The mechanical vibration and damaged X-ray source cannot be replaced separately, which is not conducive to the integration of the system

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