Automatic exposure control system and automatic exposure control method

A technology of automatic exposure and control method, which is applied in the fields of medical science, diagnosis, and instruments for radiological diagnosis, etc. It can solve the problems of limited application scenarios of automatic exposure control, large exposure error, complex structure, etc., and achieve precise exposure control , low cost, and the effect of improving image quality

Active Publication Date: 2022-06-03
SHANGHAI IRAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an automatic exposure control system and an automatic exposure control method, which are used to solve the problem of limited application scenarios, high cost, complex structure, and exposure problems of automatic exposure control in the prior art. big error

Method used

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  • Automatic exposure control system and automatic exposure control method
  • Automatic exposure control system and automatic exposure control method
  • Automatic exposure control system and automatic exposure control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] like Figure 1 to Figure 3 As shown, this embodiment provides an automatic exposure control system 1, and the automatic exposure control system 1 includes:

[0045] Computer 11 , router 12 , flat panel detector 13 , high voltage controller 14 , high voltage generator 15 and bulb 16 .

[0046] like figure 1 As shown, the computer 11 communicates with the flat panel detector 13 through the router 12 , and the computer 11 sends control instructions to the flat panel detector 13 and receives signals collected by the flat panel detector 13 .

[0047] Specifically, in this embodiment, the computer 11 is wired or wirelessly connected to the router 12, and the router 12 is wirelessly connected to the flat panel detector 13; in actual use, the computer 11 is connected to the router 12. The router 12 and the flat panel detector 13 can be connected in a corresponding manner (wired or wireless) as required, which is not limited to this embodiment.

[0048] like figure 1 As shown,...

Embodiment 2

[0062] like Figure 4 As shown, this embodiment provides an automatic exposure control method. In this embodiment, the automatic exposure control method is implemented based on the automatic exposure control system of Embodiment 1, and is not limited to the system of this embodiment in actual use. The automatic exposure control method includes:

[0063] 1) Turn on the flat panel detector 13, set the parameters of the flat panel detector 13, and select the exposure radiation field of the flat panel detector 13.

[0064] Specifically, the flat panel detector 13 is first placed in the detection system and electrically connected to other devices in the detection system. The detection system includes but is not limited to DR (Digital Radiography, direct digital X-ray), CT (computed tomography, Electronic computed tomography) and security inspection machines, and any system that uses a flat-panel detector for image acquisition is applicable.

[0065] Specifically, the flat panel d...

Embodiment 3

[0079] This embodiment provides an automatic exposure control method, which is different from the second embodiment in that the automatic exposure control method detects the exposure start time by scanning the exposure dose in the exposure radiation field area of ​​the flat panel detector. To realize automatic exposure detection, step 2) specifically includes:

[0080] In this embodiment, the exposure start time is detected by scanning the exposure dose in the exposure radiation field area of ​​the flat panel detector 13 . More specifically, after step 1) is completed, the exposure window of the flat panel detector 13 is opened, and the automatic exposure control mode is entered. The flat panel detector 13 enters the integration state, scans the exposure radiation field area of ​​the flat panel detector 13, obtains the exposure dose rate based on the gray value of the image in the exposure radiation field, obtains the exposure dose through integration, and exposes the When th...

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PUM

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Abstract

The invention provides an automatic exposure control system and an automatic exposure control method, including: a computer communicating with a flat-panel detector through a router; The high-voltage controller communicates with the flat-panel detector and closes the high-voltage generating device based on the gate-off control signal; the bulb emits X-rays based on the high-voltage signal sent by the high-voltage generating device. The invention adopts the wireless mode to transmit the gate-off control signal, and the application scenarios are not limited; the exposure dose detection of the exposure radiation field area based on the flat panel detector realizes the automatic exposure control and real-time statistics or prediction of the exposure dose at the end of the exposure, the structure is simple, The cost is low, which can effectively avoid the exposure dose error caused by line delay and other problems; at the same time, the image acquisition cycle is short and the operation complexity is low.

Description

technical field [0001] The invention relates to the field of flat panel detection, in particular to an automatic exposure control system and an automatic exposure control method. Background technique [0002] Flat panel detector is a new type of X-ray imaging detection technology that was born in the last century. It is famous for its fast imaging speed and high resolution. It is widely used in medical testing, non-destructive testing, security inspection, anti-terrorism and other fields. At present, traditional AEC (Automatic Exposure Control, automatic exposure control) uses ionization chambers (mainly gaseous ionization chambers and solid-state ionization chambers) to detect the exposure dose; as the exposure dose increases, the voltage value of the output signal of the ionization chamber Linear increase. The high-voltage generator receives the output signal of the ionization chamber, and detects the voltage value of the signal in real time. When the voltage value reache...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/00
CPCA61B6/542A61B6/566
Inventor 黄翌敏何承林
Owner SHANGHAI IRAY TECH
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