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High-voltage discharge compensation method and device for three-dimensional nuclear magnetic resonance imager

A technology of nuclear magnetic resonance imaging and compensation device, which is applied in magnetic resonance measurement, magnetic variable measurement, etc., can solve the problems of unfavorable measurement accuracy and measurement efficiency, long time interval between nuclear magnetic signal echoes, etc.

Active Publication Date: 2018-12-25
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] In view of the problems in the prior art mentioned above, after the transmission of the nuclear magnetic resonance signal is completed, there is still a certain amount of residual energy inside the antenna, so that the antenna needs to wait for the release of the remaining energy before starting the next signal transmission, and then The echo interval time of the nuclear magnetic signal in the existing nuclear magnetic resonance imager is relatively long, which is not conducive to improving the measurement accuracy and measurement efficiency. The present invention provides a method and device for compensating the high voltage release of a three-dimensional nuclear magnetic resonance imager

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  • High-voltage discharge compensation method and device for three-dimensional nuclear magnetic resonance imager

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[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the embodiments of the present application are also intended to include plural forms, unless the context clearly in...

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Abstract

The invention provides a high-voltage discharge compensation method and device for a three-dimensional nuclear magnetic resonance imager, wherein at least two antenna transmission modules are arrangedin the device. Each antenna transmitting module is respectively connected with the three-dimensional nuclear magnetic resonance imager main body and sequentially emits nuclear magnetic resonance signals under the control of the three-dimensional nuclear magnetic resonance imager main body; the antenna transmission module comprises an antenna unit, a tuning capacitor bank, a discharge unit, and anantenna switch; the antenna unit is connected with the three-dimensional nuclear magnetic resonance imager main body through the antenna switch and is used for transmitting the nuclear magnetic resonance signal; the tuning capacitor bank is connected in parallel with the antenna unit and used for tuning the frequency of the nuclear magnetic resonance signal; and the discharge unit is connected inparallel with the antenna unit and is used for discharging the residual energy after the antenna transmitting module finishes transmitting, so that the echo interval time of the nuclear magnetic signal is effectively reduced.

Description

technical field [0001] The invention relates to electronic circuit technology, in particular to a method and device for compensating high voltage discharge of a three-dimensional nuclear magnetic resonance imager. Background technique [0002] The phenomenon of nuclear magnetic resonance (Nuclear Magnetic Resonance, NMR) was discovered in 1946, and it was soon applied in the fields of physics, chemistry, material science, life science and medicine. In the 1950s, NMR began to be applied in the oil and gas industry, initially in the field of reservoir rock physics. The nuclear magnetic resonance imager can use the principle of nuclear magnetic resonance to detect the formation information around the wellbore, and has unique qualitative identification and quantitative evaluation capabilities of reservoir fluid. [0003] Among them, the antenna assembly is one of the important components of the MRI instrument, and its structure determines key performances such as the measuremen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/44G01R33/32
CPCG01R33/32G01R33/44
Inventor 廖广志肖立志魏遥刘伟许洋洋
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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