X-ray flat panel detector based on automatic exposure

Abstract

The present invention provides an automatic exposure-based X-ray flat panel detector. The automatic exposure-based X-ray flat panel detector includes an X-ray flat panel detector panel, a visible light signal sensing module and a signal readout circuit; the X-ray flat panel detector panel is used for converting X-rays into visible light and carrying out photovoltaic conversion on the visible light to form electrical signals with the accompaniment of the scattering of the visible light; the visible light signal sensing module is used for sensing scattered light, determining exposure start, monitoring the change of response signals in real time by scanning excitation signals and judging whether scattered light is generated; and the signal readout circuit automatically opens an exposure window of exposure action for the X-ray flat panel detector panel when receiving exposure start signals and completes the acquisition of the electrical signals of the X-ray plate detector panel. The automatic exposure-based X-ray flat panel detector of the invention has an instantaneous X-ray automatic exposure and sensing function, carries out automatic exposure, carries out sensing and acquires signals. According to the automatic exposure-based X-ray flat panel detector of the invention, arbitrary combination of a flat panel detector, a mobile workstation and an X-ray machine can be realized. The product is light and portable. With the automatic exposure-based X-ray flat panel detector adopted, the stability of equipment and image quality can be ensured under the premise that the exposure dose and the number of times of exposure for a patient are not required to be increased.

Description

technical field [0001] The invention relates to an X-ray flat panel detector, in particular to an X-ray flat panel detector based on automatic exposure. Background technique [0002] The X-ray flat panel detector is a device that converts X-rays into visible light first, and then converts them into electrical signals for recording through photoelectric conversion. It is one of the most important components in the X-ray imaging system. In the X-ray imaging system, another important component is the X-ray high-voltage generator and its attached X-ray tube. At present, there is no relevant unified standard to define the hardware interface and software communication protocol between the X-ray high-voltage generator and the X-ray flat panel detector, but each generator manufacturer and detector manufacturer set their own standards, which is the basis for the X-ray imaging system. Integration poses enormous difficulties. [0003] In the X-ray exposure control function module, th...

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Problems solved by technology

However, this method also has interference problems, that is, pressing artifacts, microphony (chattering noise), electromagnetic interference, etc., will lead to false detection, causing frequent

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