X-ray generating apparatus, static CT imaging apparatus and X-ray generating method

Abstract

The invention discloses an X-ray generating apparatus, a static CT imaging apparatus and an X-ray generating method. The X-ray generating apparatus is composed of a base electrode, a grid electrode, a focusing electrode, an X-ray anode target, at least one incident light source, and a first light source adjusting apparatus. The at least one incident light source irradiates the base portion of the base electrode; and a coating layer having photoconductive resistance effect is arranged at the base. And the first light source adjusting apparatus is used for controlling the irradiating position or the movement of the incident light source at the base. According to the provided X-ray generating apparatus, the emission area, the spatial position, and movement of an electronic source are freely adjusted and controlled by controlling optical signals; and thus the corresponding focusing point size, the bulb tube current magnitude, and the X-ray beam generation position are controlled. According to the static CT imaging apparatus containing the X-ray generating apparatus, the corresponding optical signal scanning controlling is used to replace the method employed by the existing static CT device, wherein a plurality of X-ray sources are controlled and driven individually based on the traditional circuit according to the method. Therefore, the complex degree of the system design is substantially reduced and the cost of the system apparatus is lowered.

Description

technical field [0001] The invention relates to an X-ray generating device, a CT imaging device and an X-ray generating method, in particular to a device for controlling X-ray generation by using optical signals, a static CT device and an X-ray generating method. Background technique [0002] In the cathode electron source used in traditional X-ray tubes, the size of the electron beam emission cross section is usually not easy to adjust after the electron source structure is fixed. For some applications, such as those related to X-ray imaging, it is required that the same X-ray tube can provide significantly different focal spot sizes and tube currents, which can usually only be achieved by placing multiple X-ray tubes in the same tube design. A cathode electron source of different sizes can be realized. This not only increases the complexity and cost of the system, but also often fails to achieve the ideal situation in terms of system performance, for example, the design ...

AI Technical Summary

Problems solved by technology

The multi-source CT structure that has been proposed, due to the design of up to hundreds of independently controlled X-ray sources, correspondingly requires the same number of cathode electron sources and independent control circuits for each electron source, and the corresponding control and The drive system is very complex and costly, and it is difficult to realize in practical applications

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