X-ray machine imaging device based on automatic diaphragm control

Abstract

The invention relates to an X-ray machine imaging device based on automatic diaphragm control, which is characterized by comprising a diaphragm driving motor, a high-resolution manual lens, a diaphragm positioning rule, a diaphragm driving ring and a diaphragm motion control unit, wherein the diaphragm motion control unit comprises a main controller, a memory, a logic control circuit, a circumference counter, a first limit point, a second limit point and a motor driving circuit; the main controller is connected with the memory; the logic control circuit is connected with the main controller, the circumference counter, the first limit point, the second limit point and the motor driving circuit; the motor driving circuit is connected with the diaphragm driving motor; the diaphragm driving motor is connected with a diaphragm of the high-resolution manual lens, the diaphragm driving ring and the diaphragm motion control unit; and the diaphragm positioning rule is arranged on the high-resolution manual lens and connected with the circumference counter.

Description

technical field [0001] The invention relates to an imaging device, in particular to an X-ray machine imaging device based on automatic aperture control. Background technique [0002] The main structure adopted by the aperture of the medical X-ray machine imaging system at present: [0003] The main structure adopted is mainly adopted by Siemens and Toshiba, such as figure 1 as shown, figure 1 It is a structural schematic diagram of an X-ray machine imaging device whose lens is composed of a group of mirrors. The dotted line in the figure indicates the internal wiring of the device. Its main features are: [0004] 1. The aperture system is separated from the lens system [0005] The so-called separation of the aperture system and the lens system means that the lens is composed of a group of lens groups, the aperture is between the lens groups, and the lens groups need to be adjusted during installation. The image quality has a great relationship with the installation. ...

AI Technical Summary

Problems solved by technology

[0012] 1) Due to the separation of lens groups, the workload of debugging is relatively large, and the requirements for technical personnel are relatively high

[0013] 2) Long-term use is easy to deviate, resulting in deterioration of imaging quality

[0014] 3) Higher cost

[0017] Adopting such a scheme can ensure the image quality, but the aperture control becomes a difficult problem, because in this field, there is no convenient, high-precision, and low-cost control method. Many manufacturers use magnets, levers, etc. The method is just a solution, but it cannot fully meet the requirements of use

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