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Method for suppressing water signal and reinforcing metabolite signal by adjusting central frequency and reception bandwidth of excitation signal band in mrs image technique

A technology of signal suppression and signal enhancement, which is applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, instrument, etc., can solve the problems of increasing the shooting time, increasing the number of shooting repetitions, weakening the frequency resolution, etc., and achieves the enhancement of metabolites. effect of the signal

Active Publication Date: 2018-10-23
GIL MEDICAL CENT +1
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Problems solved by technology

The method of enhancing the material signal by modifying the MRS shooting variables increases the number of shooting repetitions or increases the unit size of the shooting area, but this method has the disadvantages of increasing each shooting time and weakening the spatial resolution of the acquired data
The method of using data post-processing to enhance the material signal has the method of using an apodization filter, but this method has the disadvantage of weakening the frequency resolution of the acquired data

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  • Method for suppressing water signal and reinforcing metabolite signal by adjusting central frequency and reception bandwidth of excitation signal band in mrs image technique
  • Method for suppressing water signal and reinforcing metabolite signal by adjusting central frequency and reception bandwidth of excitation signal band in mrs image technique
  • Method for suppressing water signal and reinforcing metabolite signal by adjusting central frequency and reception bandwidth of excitation signal band in mrs image technique

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Embodiment Construction

[0036] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

[0037]The resonant frequency of a specific substance in a magnetic field environment is proportional to the strength of the magnetic field and proportional to the gyromagnetic constant of the reference substance. In the case of hydrogen nucleus MRS, the reference substance is TMS (Tetramethylsilane, tetramethylsilane), and the resonance frequency difference between TMS and a specific substance of interest can be expressed in Hz or PPM (part per million, parts per million).

[0038] In the case of using a PPM unit other than Hz, even if the main magnetic field changes to 1T, 1.5T, 3T, and 7T in the hydrogen nucleus MRS, the resonance frequency of the PPM unit of TMS is always 0PPM regardless of this, and the PPM unit of water resonates The frequency is always 4.7PPM. Therefore, when the unit of PPM is used, the difference between the resonance frequency of ...

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Abstract

Disclosed is a method for suppressing a water signal and reinforcing a metabolite signal by adjusting a central frequency and reception bandwidth of an excitation signal band in a magnetic resonance spectroscopy (MRS) image technique. According to one embodiment of the method for suppressing the water signal and reinforcing the metabolite signal, an excitation signal adjusted so as to have the central frequency, which is smaller than the resonant frequency of the water, is applied, and the size of the reception bandwidth is applied so as to be the same as a difference between the resonant frequency of the water and the central frequency.

Description

technical field [0001] The present invention relates to a method for suppressing water signals and enhancing metabolite signals by adjusting the center frequency and receiving bandwidth of the excitation signal frequency band in MRS imaging technology, more specifically, relates to a method for MRS imaging technology without applying additional In the case of a gradient magnetic field or an additional RF signal (radio frequency signal), the water signal is suppressed and the metabolite signal is enhanced by only adjusting the center frequency and receiving bandwidth of the excitation signal. Background technique [0002] Since MRI imaging technology realizes images based on water signals, the received water signals are very important information. The characteristic information is not only worthless but also reduces the resolution of the information of other substances of interest that is really needed, so the water signal needs to be removed to the greatest extent, and the s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/36G01R33/32G01R33/54G01R33/48
CPCG01R33/4608G01R33/4838G01R33/485
Inventor 崔尚汉丁俊荣
Owner GIL MEDICAL CENT
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