SYSTEM AND METHOD FOR ANALYZING COMPLEX CURVATURE OF ECG CURVES
First Claim
1. System for analysis of ECG curvature comprising a computer system, which computer system performs a mathematical analysis, which mathematical analysis comprises at least the following steps:
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the system comprises input means connected to at least one ECG source,b;
a number of different parameters are isolated and stored in the computer system,c;
the computer system select a first number of parameters from at least one main group,d;
the computer system combine the selected parameters in at least a first mathematical analysis,whereby the parameters are selected from groups of symmetry (S1-S72), flatness (F1-F91), duration (D1-D47) and/or complexity (C1-C468),e;
extract a segment in of the ECG curvature in the mathematical analysis,f;
which segment is corresponding to a interval between defined electrocardiographic points,g;
which segment is used as input to a first algorithm,h;
where a second fiducial point algorithm automatically calculates fiducial points at the segment,i;
where concavity intervals are evaluated on subsegments of the ECG segment and form the basis of up- and downwards concavity quantification,j;
where the system based on at least the first and the second algorithm detects and quantifies concavity on ECG curvatures.
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Abstract
The present invention relates to a system and a method for analysis of ECG curvature, which system involves a mathematical analysis, which analysis comprises the following features where a number of different parameters are isolated and stored in computer means, where a first number of parameters are selected from at least one main group, where the selected parameters are combined in at least a first mathematical analysis. It is the object of the invention to improve mathematical analysis of ECG curvature particular for complex parts of the curvature such as notches or concavities. It is a further object of the invention to improve automatic quantification of symmetry, flatness and durations of ECG curvature. This can be achieved if the parameters are selected from groups of symmetry, flatness, duration and/or complexity, which parameters are used as input to an algorithm, where concavity intervals are evaluated on subsegments of the ECG segment and form the basis of up- and downwards concavity quantification, where the system based on an algorithm detects and quantifies concavity on ECG curvatures. Herby can be achieved that a complex curvature can be analysed and the complex curvature might indicate symptoms of diseases which are very difficult to read on ECG curvature by existing technology. This can lead to a more precise analysis where existing systems might by analysing the curvature give a first indication of a symptom. By then performing an analysis of the complex part of the curvature, further symptoms might be indicated.
16 Citations
21 Claims
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1. System for analysis of ECG curvature comprising a computer system, which computer system performs a mathematical analysis, which mathematical analysis comprises at least the following steps:
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a;
the system comprises input means connected to at least one ECG source,b;
a number of different parameters are isolated and stored in the computer system,c;
the computer system select a first number of parameters from at least one main group,d;
the computer system combine the selected parameters in at least a first mathematical analysis,whereby the parameters are selected from groups of symmetry (S1-S72), flatness (F1-F91), duration (D1-D47) and/or complexity (C1-C468), e;
extract a segment in of the ECG curvature in the mathematical analysis,f;
which segment is corresponding to a interval between defined electrocardiographic points,g;
which segment is used as input to a first algorithm,h;
where a second fiducial point algorithm automatically calculates fiducial points at the segment,i;
where concavity intervals are evaluated on subsegments of the ECG segment and form the basis of up- and downwards concavity quantification,j;
where the system based on at least the first and the second algorithm detects and quantifies concavity on ECG curvatures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for analysis of ECG curvature, which method determines a number of parameters in a computer system, where the method for analysing the ECG curvature at least incorporates the steps of:
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a. receiving at least one ECG curvature from at least one source, b;
indicating a number of different parameters determined from the received ECG curvature,c;
storing the parameters in storage means,d;
selecting disease specific parameters in the storage means,e;
selecting a first number of parameters from at least one main group, which main groups comprise parameters of symmetry, flatness, duration and/or complexity,f;
combining the selected parameters in at least a first mathematical analysis,whereby the groups of parameters comprises parameters of symmetry (S1-S72), flatness (F1F91), duration (D1-D47) and/or complexity (C1-C468), g;
the mathematical analysis is extracting a segment of the ECG curvature, which segment is corresponding to the interval between defined electrocardiographic points,h;
which mathematical analysis uses the segment as input to a first algorithm,i;
which mathematical analysis calculates fiducial points at the segment, by a second fiducial point algorithm,j;
which mathematical analysis evaluates concavity intervals on subsegments of the ECG segment and form the basis of upwards and downwards concavity quantification,k;
which mathematical analysis indicates symptoms of electrocardiographic abnormalities by detection and quantification of at least one concavity of an ECG curvature.
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Specification