Self-calibration method of upper and lower limits of X-ray tube fluoroscopy filament current

A filament current and X-ray tube technology, applied in X-ray equipment, electrical components, etc., can solve the problems of high requirements for operators and inconsistent manufacturing process of X-ray tubes, and achieve the effect of improving work efficiency and simple operation

Active Publication Date: 2019-08-06
NANNING YIJU MEDICAL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] c) The requirements for operators are very high, and certain professional knowledge of X-ray machines is required
[0009] 2) The method of loading the existing X-ray tube data table: there is a problem that the same series of X-ray tubes are inconsistent due to the manufacturing process

Method used

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  • Self-calibration method of upper and lower limits of X-ray tube fluoroscopy filament current

Examples

Experimental program
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Embodiment

[0028] like figure 1 As shown, a method for self-calibrating the upper and lower limits of the X-ray tube fluoroscopy filament current comprises the following steps:

[0029] Step 1, pre-setting the upper limit value and lower limit value of the filament current for each fluoroscopy gear;

[0030] Step 2, enter the fluoroscopy filament current upper and lower limit correction function system, and select the initial correction fluoroscopy gear;

[0031] Step 3: Depress the foot switch to perform exposure and obtain the upper limit setting value and lower limit setting value of the filament current of the current fluoroscopy gear; the correction exposure time of each fluoroscopy gear is 1s; the initial correction fluoroscopy gear is set to 0.5mA ;

[0032] Step 4, the system reads the current of the X-ray tube every 1 ms to obtain the current return value, and compares the current return value with the upper limit setting value and the lower limit setting value of the filament...

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PUM

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Abstract

The invention provides an X-ray tube perspective filament current upper and lower limit value self-calibration method. The method comprises the following steps of presetting upper and lower limit values of a filament current; carrying out exposure and reading a tube current; comparing a current return value and a set value; and acquiring new upper and lower limit values of the filament current andthe like. By using the calibration method of the invention, an X-ray tube output current is accurate, work efficiency is increased, and work which costs half an hour before can be completed in 1 to 2minutes; an oscilloscope is needed during a previous calibration process so that a requirement to an operation skill of operation personnel is high, and by using the method of the invention, the operation is simple and an ordinary person can complete the operation.

Description

technical field [0001] The invention relates to a method for self-calibrating the upper and lower limits of the fluoroscopy filament current of an X-ray tube, and belongs to the technical field of X-ray machine equipment. Background technique [0002] The current range of the X-ray tube fluoroscopy filament is between 0.3 and 5mA. In order to output the current accurately and stably, the current closed-loop control is particularly important, so that the tube current returns to the CPU through a certain method, and the CPU will read the return value and set it. Compared with a given demand current value, the final control tube current is always output stably by controlling the output filament current value. [0003] Because the tube current is too small, it is impossible to use the same upper and lower limits of the filament current to correct all MA gears like in the photographic mode. Each gear of fluoroscopy needs to be adjusted with different upper and lower limits, other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05G1/26
CPCH05G1/265
Inventor 林燕霞马培威潘英昂
Owner NANNING YIJU MEDICAL ELECTRONICS
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