Respiration detection device and method and magnetic resonance imaging system

A breathing detection device and respiratory movement technology, which is applied in the evaluation of respiratory organs, diagnostic recording/measurement, medical science, etc., can solve the problems of difficult coil design, poor decoupling effect, high manufacturing cost, etc., and achieve simple online real-time decoupling , low cost and simple structure
CN112401868APending Publication Date: 2021-02-26SIEMENS SHENZHEN MAGNETIC RESONANCE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SIEMENS SHENZHEN MAGNETIC RESONANCE
Publication Date
2021-02-26

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Abstract

The invention provides a respiration detection device, a respiration detection method and a magnetic resonance imaging system. The respiration detection device comprises a transmitting coil, a receiving coil and a decoupling module, wherein the transmitting coil is configured to transmit a radio frequency signal for detecting the respiratory movement of a detected body; the receiving coil is configured to receive a respiration receiving signal, wherein the received respiration receiving signal comprises a radio frequency interference signal and a respiration modulation signal, the radio frequency interference signal is a signal that the radio frequency signal directly reaches the receiving coil through spatial coupling, and the respiration modulation signal is a signal that the radio frequency signal reaches the receiving coil after passing through the detected body and being modulated by the respiration of the detected body; and the decoupling module is configured to generate a cancellation signal corresponding to the radio frequency interference signal during scanning of the magnetic resonance system, and the radio frequency interference signal in the respiration receiving signalis cancelled by using the cancellation signal to obtain the respiration modulation signal so as to detect the respiratory movement of the detected body.
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Description

technical field

[0001] The present disclosure relates to the field of medical magnetic resonance, and in particular to a breath detection device, a breath detection method, and a magnetic resonance imaging system. Background technique

[0002] Magnetic resonance imaging (Magnetic Resonance Imaging, MRI) is a type of tomography, which uses magnetic resonance phenomena to obtain electromagnetic signals from a subject such as a human body, and reconstructs human body information. Specifically, MRI applies a radio frequency pulse of a specific frequency to the human body in a static magnetic field, so that the hydrogen protons in the human body are excited and magnetic resonance occurs. After the pulse is stopped, the protons generate magnetic resonance (Magnetic Resonance, MR) signals during the relaxation process. Human body information is reconstructed through the processing processes of MR signal reception, spatial encoding and image reconstruction.

[0003] During magneti...

Claims

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