Filament current value calibration method and device for X-ray tube

A filament current and X-ray tube technology, which is applied to X-ray equipment, electrical components, computer tomography scanners, etc., can solve the problems of the filament current value calibration method with many exposure times, and achieves the benefits of processing, no waste of life, and reduced life. The effect of a small amount of data

Active Publication Date: 2016-03-23
SUZHOU POWERSITE ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of too many exposure times in the filament current value calibration method in the prior art

Method used

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  • Filament current value calibration method and device for X-ray tube
  • Filament current value calibration method and device for X-ray tube
  • Filament current value calibration method and device for X-ray tube

Examples

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Embodiment 1

[0067] This embodiment provides a method for calibrating the filament current value of an X-ray tube, such as figure 1 As shown, the method includes the following steps:

[0068] S1. Receive a few tube current values ​​and tube voltage values ​​to be calibrated that need to be calibrated, not all tube current values ​​and tube voltage values ​​to be calibrated that need to be calibrated.

[0069] S2. Obtain a preset filament current value according to the tube current value to be calibrated, the tube voltage value to be calibrated, and the preset corresponding relationship between the tube current value, the tube voltage value, and the filament current value. Preferably, the correspondence between the above preset tube current value, tube voltage value and filament current value can be estimated by using the known tube current value and tube voltage value in the X-ray tube manual to obtain the corresponding filament current value , and stored in the form of a table. For exam...

Embodiment 2

[0106] This embodiment provides a device for calibrating the filament current value of an X-ray tube, such as Figure 4 As shown, the device includes:

[0107] The first receiving unit 1 is used to receive a few tube current values ​​to be calibrated and tube voltage values ​​to be calibrated;

[0108] The first obtaining unit 2 is configured to obtain a preset filament current value according to the tube current value to be calibrated, the tube voltage value to be calibrated, and the preset correspondence between the tube current value, the tube voltage value, and the filament current value;

[0109] The second receiving unit 3 is used to receive the first actual tube current value when the externally collected X-ray tube is exposed under the action of the tube voltage value to be calibrated and the preset filament current value;

[0110] The first judging unit 4 is used to judge the relationship between the absolute value of the difference between the first actual tube curr...

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Abstract

The invention discloses a filament current value calibration method and device for an X-ray tube, and the method comprises the steps: receiving a few of to-be-calibrated tube current values and to-be-calibrated tube voltage values; obtaining a preset filament current value according to the to-be-calibrated tube current values, the to-be-calibrated tube voltage values, and the relation among a preset tube current value, a preset tube voltage value and the filament current value; receiving a first actual tube current value, collected externally, of the X-ray tube under the action of the to-be-calibrated tube voltage values and the preset filament current value during exposure; judging the size relation between the absolute value of the difference, between a first actual tube current value and the to-be-calibrated tube current value, and a first preset difference value, and the size relation between the absolute value of the difference, between the first actual tube current value and the to-be-calibrated tube current value, and a second preset difference value; and enabling the preset filament current value to serve as a calibrated standard filament current value corresponding to the first actual tube current value and the to-be-calibrated tube voltage value when the absolute value is less than or equal to the first preset difference value. The method is small in number of exposure times, and does not cause the service life of the X-ray tube to be reduced.

Description

technical field [0001] The invention relates to the control field of CT equipment, in particular to a method and device for calibrating the filament current value of an X-ray tube. Background technique [0002] X-ray tomography (Computed Tomography, CT for short) equipment is a commonly used medical diagnostic equipment. By irradiating X-rays to the subject's body and receiving the X-rays that penetrate the subject's body, CT equipment can form photographic pictures that can present the shape of organs and tissues in the subject's body. In CT equipment, X-rays are generated and emitted by an X-ray tube. [0003] The X-ray tube is actually a large high vacuum cathode ray diode with a cathode and an anode on which a filament is arranged. During the working process of the X-ray tube, by applying current to the cathode filament, the filament is heated and free electrons gather, and then a high voltage is applied to the cathode and anode. Due to the sharp increase in the potent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05G1/26A61B6/03
CPCA61B6/03H05G1/265
Inventor 郝建伟
Owner SUZHOU POWERSITE ELECTRIC CO LTD
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