Three-dimensional heart magnetic source positioning method, system and server

A positioning method and positioning system technology, applied in the field of biomedical signal analysis, can solve problems such as low algorithm efficiency, many algorithm iterations, and large positioning errors, and achieve the effect of reducing positioning errors, reducing iterations, and improving algorithm efficiency
CN106901717AInactive Publication Date: 2017-06-30SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Publication Date
2017-06-30
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides three-dimensional heart magnetic source positioning method, system and server. The three-dimensional magnetic source positioning method comprises the following steps: after measurement in an appointed region above a human chest through a full-tensor magnetocardiography, acquiring homogeneous field component data of one or more measuring points and first order gradient tensor data corresponding to the homogeneous field component data; according to a three-dimensional prior array established in advance, reestablishing a heart magnetic source, and calculating a fit measuring point magnetic field gradient field value; and screening the heart magnetic source corresponding to a minimum value of an error function by utilizing the error function, used for screening an optimal solution, of the heart magnetic source. The three-dimensional heart magnetic source positioning method, system and server have higher resolution to a space discrete distribution source and a time domain overlapping source based on three-dimensional full-tensor magnetocardiogram data; and meanwhile, a three-dimensional prior array optimization algorithm is established, so that the iteration number of the algorithm and the positioning errors are reduced, and the algorithm efficiency is improved.
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Description

technical field

[0001] The invention belongs to the field of biomedical signal analysis, and relates to a positioning method and system, in particular to a three-dimensional cardiomagnetic source positioning method, system and server. Background technique

[0002] Magnetocardiography is a new heart monitoring method based on SQUID system, which has the characteristics of non-invasive, non-radiation and high sensitivity. Clinical studies have shown that magnetocardiography is superior to other monitoring methods such as electrocardiography in the early diagnosis of arrhythmia and myocardial ischemia, and has great application prospects.

[0003] Magnetocardiogram source localization is an important method for analyzing magnetocardiogram data. It equates a large number of microcurrent collections generated by electrical activity of cardiac cells into limited current source activities, and uses reconstruction algorithms to calculate the position, direction and Amplitude, , inf...

Claims

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