Supercharge Your Innovation With Domain-Expert AI Agents!

Method for improving nuclear magnetic resonance signal to noise ratio

A kind of nuclear magnetic resonance and signal-to-noise ratio technology, applied in the direction of magnetic resonance measurement, etc., can solve problems such as analog noise, signals that cannot be collected normally, digital-to-analog noise, etc.

Inactive Publication Date: 2012-07-18
EAST CHINA NORMAL UNIV +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both these analog amplifiers and gain control analog circuits inevitably generate analog noise
Second, digital-to-analog noise
If the receiver gain ratio G 0 Large, a part of the signal with a large amplitude will not be collected normally (overflow)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving nuclear magnetic resonance signal to noise ratio
  • Method for improving nuclear magnetic resonance signal to noise ratio
  • Method for improving nuclear magnetic resonance signal to noise ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] When the nuclear magnetic resonance signal is a free attenuation signal, the present invention comprises the following steps:

[0034] a) Set the gain control circuit at the front stage of the receiver;

[0035] b) Before starting sampling, set the receiver gain waveform and standard gain;

[0036] c) During the sampling process, dynamically change the receiver gain according to the set gain waveform;

[0037] d) After the sampling is finished, according to the set gain waveform, calculate the collected data and record it as A j Corresponding value at standard gain.

[0038] in:

[0039] The process of "setting receiver gain waveform and standard gain" includes the following steps:

[0040] i. In terms of amplitude, the change law of the receiver gain waveform is opposite to that of the free attenuation signal; since the amplitude of the free attenuation signal changes according to the negative e index, the receiver gain waveform changes according to the positive e in...

Embodiment 2

[0051] When the nuclear magnetic resonance signal is an echo signal, the present invention comprises the following steps:

[0052] a) Set the gain control circuit at the front stage of the receiver;

[0053] b) Before starting sampling, set the receiver gain waveform and standard gain;

[0054] c) During the sampling process, dynamically change the receiver gain according to the set gain waveform;

[0055] d) After the sampling is finished, according to the set gain waveform, calculate the collected data and record it as A j Corresponding value at standard gain.

[0056] in:

[0057] The process of "setting receiver gain waveform and standard gain" includes the following steps:

[0058] i. In terms of amplitude, the change law of the receiver gain waveform is opposite to that of the echo signal. The echo signal has the following characteristics: at the echo center, the signal amplitude is the largest (peak point); from the center to both sides, the signal amplitude change...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for improving nuclear magnetic resonance signal to noise ratio, and the method comprises the steps of setting a gain control circuit at the front stage of a receiver, setting gain waveform and standard gain of the receiver before starting sampling, dynamically changing the gain of the receiver according to the set gain waveform during the sampling process, calculating the corresponding values of the collected data under the standard gain according to the set gain waveform after the completion of the sampling and the like. Compared with the prior art, the method reduces noise from the receiver and improves the nuclear magnetic resonance signal to noise ratio in case of equivalent signals.

Description

technical field [0001] The invention relates to the technical field of nuclear magnetic resonance, in particular to a method for improving the signal-to-noise ratio of nuclear magnetic resonance signals by improving the performance of a nuclear magnetic resonance receiver. Background technique [0002] Nuclear magnetic resonance technology has become a very useful means in scientific research and medical clinical diagnosis. To obtain high-quality images and spectra, it is critical to improve the signal-to-noise ratio of NMR signals. Usually, in an NMR system, a complete receiving system includes a radio frequency receiving coil, a preamplifier and a receiver, such as figure 1 shown. In the receiving system, as the signal passes through each stage, the noise generated by this stage will be added. The receiving coil and preamplifier are located at the front end of the receiving system, and their noise characteristics have a significant impact on the signal-to-noise ratio of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/32
Inventor 宁瑞鹏杨光李鲠颖
Owner EAST CHINA NORMAL UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com