Nuclear magnetic resonance radio frequency probe circuit and nuclear magnetic resonance radio frequency probe energy release method
A technology of radio frequency probe and nuclear magnetic resonance, applied in the direction of magnetic resonance measurement, etc., can solve the problem of increasing radio frequency power loss
Active Publication Date: 2021-07-06
EAST CHINA NORMAL UNIV +1
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[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance.
[0027]In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Groun...
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The invention provides a nuclear magnetic resonance radio frequency probe circuit and a nuclear magnetic resonance radio frequency probe energy release method. The nuclear magnetic resonance radio frequency probe circuit comprises a resonance circuit and an energy release circuit, and the resonance circuit comprises a radio frequency coil; the energy release circuit comprises a first energy release coil, a second energy release coil, a first energy consumption circuit and a second energy consumption circuit; magnetic fields generated by the first energy release coil and the second energy release coil are opposite in direction and interact with each other; and the radio frequency coil, the first energy release coil and the second energy release coil form mutual inductance coupling. According to the nuclear magnetic resonance radio frequency probe circuit provided by the invention, the influence of the energy release circuit on the radio frequency excitation pulse is effectively avoided, and when the energy release circuit is controlled to be switched to a non-conducting state after energy release is finished, magnetic fields generated by the first energy release coil and the second energy release coil offset each other so that oscillation signals generated when the energy release circuit is switched between the conducting state and the non-conducting state are small, and extra interference signals generated due to the fact that the oscillation signals are coupled to the radio frequency coil are reduced.
Description
technical field [0001] The invention relates to the technical field of nuclear magnetic resonance, in particular to a nuclear magnetic resonance radio frequency probe circuit and a nuclear magnetic resonance radio frequency probe energy discharge method. Background technique [0002] In the analysis of nuclear magnetic resonance spectrum and relaxation, the effective detection of short relaxation and weak signal samples is a key indicator for evaluating the performance of the equipment, which puts higher demands on the dead time and sensitivity of the system's RF probe. requirements. The dead time of the RF probe mainly refers to the duration of the ringing signal generated by the probe coil after the RF excitation is completed. The energy will gradually become zero through the coil loop consumption and radio frequency radiation. During this period, the nuclear magnetic signal generated will be submerged in this part of the ringing signal, so the nuclear magnetic signal can...
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IPC IPC(8): G01R33/34G01R33/36
CPCG01R33/34G01R33/36
Inventor 蒋瑜徐俊成杨培强黄俊敏
Owner EAST CHINA NORMAL UNIV