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X-ray automatic exposure control method and system

An automatic exposure and control method technology, applied in the field of X-ray automatic exposure control method and system, can solve the problems of high dependence on external trigger signal, large exposure error, complex structure, etc. The effect of improving image quality

Active Publication Date: 2021-05-07
SHANGHAI IRAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an X-ray automatic exposure control method and system, which is used to solve the problem of high dependence of automatic exposure control on external trigger signals in the prior art, high cost, Problems such as complex structure and large exposure error

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  • X-ray automatic exposure control method and system

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Embodiment 1

[0038] Such as figure 1 As shown, the present embodiment provides an automatic exposure control method for X-rays, and the automatic exposure control method for X-rays includes:

[0039] 1) Turn on the flat panel detector, set the parameters of the flat panel detector, and select the exposure radiation field of the flat panel detector.

[0040] Specifically, first place the flat panel detector in the detection system and electrically connect it with other devices in the detection system, the detection system includes but not limited to DR (Digital Radiography, direct digital X-ray), CT (computed tomography, electronic Computed tomography) and security inspection machines, any system that uses flat panel detectors for image acquisition is applicable.

[0041] Specifically, the flat panel detector is turned on, and the parameters of the flat panel detector are set. The set parameters include but are not limited to the exposure dose threshold (the exposure dose threshold can be ...

Embodiment 2

[0054] Such as Figure 2~Figure 4 As shown, this embodiment provides an X-ray automatic exposure control system 1. In this embodiment, the X-ray automatic exposure control system 1 is used to implement the X-ray automatic exposure control method of the present invention. The X-ray automatic exposure control system 1 includes:

[0055] A flat panel detector 11 , a high voltage controller 12 , a high voltage generating device 13 and a ball tube 14 .

[0056] Such as figure 2 As shown, the flat panel detector 11 implements automatic exposure control and automatically collects images.

[0057] Specifically, such as image 3 As shown, the flat panel detector 11 includes a detection panel 111, an automatic exposure detection module 112 and an automatic exposure control module 113; the detection panel 111 detects X-rays and converts them into electrical signals; the automatic exposure detection module 112 is connected to The output terminal of the detection panel 111 detects the...

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Abstract

The present invention provides an automatic exposure control method and system, comprising: opening the flat panel detector, setting the parameters of the flat panel detector, and selecting the exposure radiation field; scanning the exposure dose of the exposure radiation field area in real time, if detected When the exposure dose is greater than the first preset threshold, it is determined that the exposure is started; after the exposure starts, it enters the automatic exposure control mode and triggers the flat panel detector to send a gate-off control signal; after the exposure ends, the flat panel detector triggers image acquisition. The invention realizes automatic exposure detection and obtains the exposure dose at the end of exposure based on the exposure dose detection of the flat panel detector, has a simple structure and low cost, and can effectively avoid exposure dose errors caused by problems such as line delays; at the same time, the image acquisition cycle is short and the operation is complicated low degree.

Description

technical field [0001] The invention relates to the field of flat panel detection, in particular to an X-ray automatic exposure control method and system. Background technique [0002] At present, the traditional AEC (Automatic Exposure Control, automatic exposure control) uses ionization chambers (mainly gaseous ionization chambers and solid state ionization chambers) to detect exposure doses. The ionization chamber is arranged on the surface of the flat panel detector, and the ionization chamber needs to be connected with the high-voltage generator through a special cable, and the structure complexity and cost are high. In recent years, integrated digital automatic exposure control has appeared as an emerging technology in the industry, which has reduced the complexity of system structure and material costs to a certain extent; however, it still needs to use external trigger signals to start the detection function of integrated digital automatic exposure control. The comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05G1/30G01T1/161
CPCH05G1/30G01T1/161
Inventor 黄翌敏何承林
Owner SHANGHAI IRAY TECH
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