X-ray automatic exposure control system and control method thereof

Abstract

The invention provides an X-ray automatic exposure control system and a control method thereof. The X-ray automatic exposure control system comprises a high-voltage generator, a flat panel detector and a switch, wherein the high-voltage generator is used for outputting an X-ray to a flat panel detector; the flat panel detector which is used for receiving the X-ray and outputting an image digital signal to the switch and comprises an AEC module and an AED module; the AED module is used for outputting a starting signal to the AEC module after the X-ray is detected; the AEC module is used for controlling the high-voltage generator to stop exposure; and the switch is used for receiving a control signal output by the AEC module and the image digital signal output by the flat panel detector, outputting the control signal to the high-voltage generator and outputting the image digital signal to a computer. According to the X-ray automatic exposure control system, the AEC module and the AED module are integrated in the flat panel detector, the AEC module is started through the AED module, the problem that the AEC module and the high-voltage generator should be connected with AEC harness canbe avoided, the system is optimized, and digital control is realized.

Description

technical field [0001] The invention relates to an X-ray automatic exposure control system and a control method thereof, belonging to the technical field of medical equipment. Background technique [0002] AEC (Automatic Exposure Control) technology is widely used in X-ray general exposure systems. Its principle is to use ionization chambers and other devices to receive X-rays or visible light converted from X-rays, and convert them into electrical signals. The AEC module performs integral processing on the electrical signals. As the exposure time increases, the accumulated voltage value increases, and when a certain threshold voltage is reached, the AEC module controls the high-voltage generator to stop the exposure. figure 1 It is a schematic diagram of the principle of AEC technology in the prior art, such as figure 1 As shown, the high-voltage generator 10 controls the emission of exposure rays (X-rays) by the bulb 11 . After the exposure rays pass through the subject, ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an X-ray automatic exposure control system and its control method for the deficiencies in the prior art, which can realize the integration of the AEC module and the AED module in the flat panel detector, and start the AEC module through the AED module, avoiding Solved the problem that the AEC module must be connected with the high voltage generator using the AEC harness, optimized the system, and realized digital control; used the analog-to-digital conversion module to convert the analog signal output by the AEC module into a digital signal, eliminating long-distance analog signal transmission Signal attenuation and susceptibility to interference issues

Images