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Magnetic resonance imaging signal receiving method

A technology of nuclear magnetic resonance imaging and signal reception, which is used in magnetic resonance measurement, measurement of magnetic variables, medical science, etc. It can solve problems such as acquisition time error and phase jitter, and achieve the effect of eliminating signal jitter and good reliability.

Inactive Publication Date: 2017-03-22
苏州市克拉思科文化传播有限公司
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Problems solved by technology

[0007] In view of the above problems, the object of the present invention is to provide a nuclear magnetic resonance imaging signal receiving method, which aims to solve the problems of phase jitter due to acquisition time errors in the existing nuclear magnetic resonance imaging signal receiving method

Method used

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  • Magnetic resonance imaging signal receiving method

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Embodiment

[0025] Embodiment: A kind of MRI signal receiving method

[0026] See attached figure 1 , the signal receiving method adopts the following steps to operate:

[0027] In the first step, a timing counter is set on the NMR signal receiver, and the timing counter is set to collect an imaging signal every interval T;

[0028] The second step is to measure the time error value received by the sampling signal, wherein, the number of times of measurement X=i is set, i=0 under the initial state, and i is automatically increased by 1 every time the measurement is performed;

[0029] The third step is to record the first actual time T of nuclear magnetic resonance by a timing counter 1 , get the time error value of the first sample T 1 -T, at this time T 1 Corresponding to the corresponding theoretical imaging signal value Y 1 ;When X=i is recorded each time, it corresponds to a theoretical signal value Y i ;

[0030] The fourth step is to set the error value to T 1 -T into the e...

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Abstract

The invention relates to a magnetic resonance imaging signal receiving method which includes steps of arranging a timing counter on a magnetic resonance imaging signal receiver, and setting the timing counter to collect an imaging signal once at interval of T; measuring the time bias for receiving the sampling signal; through the timing counter, measuring a first actual time T1 of the magnetic resonance to obtain the time bias value of a first sample as T1-T; taking the bias value T1-T as the input and taking to an empirical formula, calculating to obtain a differential value delta Y of the imaging signal; according to the nuclear magnetic resonance theory imaging signal value Yi, calculating to obtain the actual calculation imaging signal value; making that the actual imaging signal value of the nuclear magnetic resonance is equal to the actual calculation imaging value of the nuclear magnetic resonance corresponding to the moment. The magnetic resonance imaging signal receiving method is good in reliability; after correcting the magnetic resonance signal through the method, every sampling signal joggling caused by a digital receiver can be eliminated greatly.

Description

technical field [0001] The invention relates to a signal receiving method, in particular to a nuclear magnetic resonance imaging signal receiving method. Background technique [0002] At present, in the existing nuclear magnetic resonance imaging system for receiving antenna devices such as human knee joint signals, the antenna basic unit structure for receiving signals is usually composed of a first loop (LOOP) receiving coil and a saddle (SADDLE) receiving coil. Combining receiving coils, the first annular receiving coil mainly ensures the signal strength in the middle of the imaging area, and the saddle receiving coil helps to achieve a certain scale of signal field of view or signal receiving area (FOV). [0003] Using a digital receiver can get a magnetic resonance spectrogram without zero-frequency peaks and image peak interference. In addition, due to the use of digital filters in the digital receiver, it also has very good linear phase shift in the passband and out-o...

Claims

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Application Information

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IPC IPC(8): A61B5/055G01R33/36
CPCA61B5/055G01R33/3621
Inventor 史志晔
Owner 苏州市克拉思科文化传播有限公司
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