Ischemia identification, quantification and partial localization in MCG

An ischemia, cardiac technology, applied in the fields of adjusting magnetic variables, magnetic resonance measurement, image analysis, etc., can solve the problems of incapable ischemic heart disease severity, inability to fully achieve, spatial positioning damage, etc.

Inactive Publication Date: 2004-01-28
CARDIOMAG IMAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] No matter how sophisticated the qualities, features and advantages of the above-mentioned prior art systems and methods, they cannot fully achieve the purpose of the present invention
For example, prior art systems and methods are unable to use inverse solutions to spatially localize the location of damaged, defective or ischemic cardiac tissue from magnetic data
They cannot determine the severity of ischemic heart disease using MCG data

Method used

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  • Ischemia identification, quantification and partial localization in MCG
  • Ischemia identification, quantification and partial localization in MCG
  • Ischemia identification, quantification and partial localization in MCG

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Embodiment Construction

[0038] Although the invention has been described in terms of preferred embodiments, it can be realized in many different configurations, forms and materials. A preferred embodiment of the present invention as shown in the accompanying drawings will be specifically described below to explain the content of the present invention. It is an example of the principle of the present invention and its functional structural features, and is not intended to limit the present invention to the present invention. The example shown. Those skilled in the art will be able to implement many other possible variations within the scope of the invention. The term "identification" used in the specification refers to the identification of ischemic cardiac tissue, and it should be understood that a medical professional (such as a cardiologist) makes an effective decision based on the information provided by the MCG used in conjunction with the system and method of the present invention. No final det...

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Abstract

A magnetic dipole model based on MCG data of the heart is used to localize cardiac tissue afflicted with ischemia. The direction of diaplacement of the dipole during the ST segment, superimposed on the heart's general outline, indicates a rough location of the ischemic cardiac tissue. Furthermore, the extent of ischemia is quantified based upon the how much displacement occurs in the ST segment. For example, if significant dipole's displacement occurs in the first quarter of the ST segment, then it is identified as a first-degree ischemia. Similarly, if diaplacement occurs in 1/2, 3/4, or 1 full ST segment, then the level of ischemia is identified as second degree, third degree, or fourth degree ischemia (fourth degree being the worst kind of ischemia where the dipole's position is dynamic all through the ST segment).

Description

technical field [0001] The invention relates to the field of diagnosis of cardiac arrhythmia. In particular, the present invention relates to the identification, localization and quantification of cardiac disorders, such as myocardial ischemia or cardiac insufficiency commonly known as coronary heart disease. Background technique [0002] Magnetocardiography (MCG) maps the electrical activity of the heart by measuring and mapping the magnetic fields generated by physiological electrical currents in cardiac tissue. In other words, it is a method of recording electrophysiological processes in the heart through magnetic measurements. This measurement is performed non-invasively usually above the patient's chest. [0003] The prior art mainly uses electrocardiogram (ECG) to diagnose cardiac arrhythmia. There are several versions of the common well-established ECG in use from the late 19th century to the present, including the rest 12-lead ECG and the stress test 12-lead ECG r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/28A61B5/00A61B5/04A61B5/05A61B5/055A61B6/00A61B10/00G06T1/00G06T7/20
CPCA61B5/04007A61B5/243
Inventor A·A·巴克哈雷夫
Owner CARDIOMAG IMAGING
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