Magnetocardiogram signal quality evaluation method and system
A signal quality and evaluation method technology, applied in the field of biomedical signals, can solve problems such as the inability to evaluate the quality of cardiomagnetic signals in an intelligent, convenient and accurate manner, and achieve the effect of convenient and accurate quality evaluation
Active Publication Date: 2018-01-09
漫迪医疗仪器(上海)有限公司
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[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method and system for evaluating the quality of the magnetic heart signal, which is used to solve the problem of inability to intelligently, conveniently and accurately evaluate the quality of the collected magnetic heart signal in the prior art. The problem
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[0034] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.
[0035] It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and number of compo...
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The invention provides a magnetocardiogram signal quality evaluation method and system. The method and system are used for extracting a to-be-processed magnetocardiogram signal and a corresponding reference electrocardiosignal R peak point, the electrocardiosignal R peak point serves as a reference, the magnetocardiogram signal is segmented into independent periodic waves, and the period number ofthe electrocardiosignal is recorded; the periodic wave with noise smaller than a preset noise threshold in the electrocardiosignal is acquired to serve as an effective periodic wave, and the effective period number corresponding to an effective period wave signal is obtained; the collected magnetocardiogram signal is evaluated according to the effective number of the periodic waves, R peak pointbaseline drift and the effective cyclic wave noise number, so that the quality of the collected magnetocardiogram signal is judged. According to the method and system, the quality of the collected magnetocardiogram signal can be evaluated intelligently, conveniently and accurately.
Description
technical field [0001] The present invention relates to the field of biomedical signals, in particular to a method and system for evaluating the quality of magnetic cardiomagnetic signals. Background technique [0002] Magnetocardiograph has irreplaceable application value in heart disease diagnosis and functional research. Superconducting Quantum Interference Device (SQUID) is a magnetic flux sensor for measuring cardiac magnetic field with high sensitivity. [0003] The signals collected by the same magnetocardiograph equipment, due to other reasons such as the environment or itself, the quality of the collected signals is uneven, including useful signals and noise interference. The noise includes baseline drift, signal glitches, etc. The noise mainly affects The influence of signal shape will seriously interfere with signal features, and signal features are the basis of signal analysis. The quality problems of cardiomagnetic signals caused by noise, motion interference an...
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Login to View More IPC IPC(8): A61B5/04A61B5/0402A61B5/0452A61B5/0456A61B5/352
Inventor 闫晓雯张树林王月霞曾曹宁
Owner 漫迪医疗仪器(上海)有限公司