CN103948387A - Polymorphism reconstruction and optimization method for realizing abnormal electrocardiogram template based on big data - Google Patents
Polymorphism reconstruction and optimization method for realizing abnormal electrocardiogram template based on big data Download PDFInfo
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Abstract
The invention provides a polymorphism reconstruction and optimization method for realizing an abnormal electrocardiogram template based on big data. The polymorphism reconstruction and optimization method is characterized by comprising the following steps that firstly, parameter template data with two-dimension characteristics are built according to decomposing parameters of standard electrocardiogram waveforms, and an electrocardiogram waveform template consisting of a plurality of fine nodes is built; then, the big data of the existing and edited dynamic electrocardiogram monitor are utilized for preprocessing before comparison, i.e., waveform segmentation, and next, the gradual waveform comparison with the electrocardiogram waveform template is carried out; next, three key quantities including FRR (fault read rate), FAR (false accept rate) and TH of the value range being 0 to 1 are used for counting the success rate finally matched with the assessment in a comparison algorithm, in addition, the polymorphism reconstruction is carried out, or the template data volume optimization is carried out again.
Description
Technical field
What the present invention relates to is a kind of polymorphic reconstruct and automatic optimization method of realizing abnormal electrocardiogram template based on large data, be mainly to use the large data of dynamic electro-cardiac monitor generation to carry out the method for dynamic construction, optimization abnormal electrocardiogram data template variform, belong to dynamic electrocardiogram monitoring technical field.
Background technology
At present, in dynamic electrocardiogram monitoring in medical treatment, identification based on abnormal electrocardiographic pattern is carried out manual evaluation by medical practitioner often, not only efficiency is low but also hand labor amount is large for it, although some medical special electrocardio software or equipment also can be realized dynamic pre-identification, but misclassification rate and to refuse to recognize rate higher, its reason is that most of electrocardio recognizers are the abnormal electrocardiogram data templates based on conventional criteria, differ greatly for different individual humans, such as individual variations such as old man, child, youngster, middle age, the display form of abnormal electrocardiogram can be different.Therefore for dynamic electrocardiogram monitoring, each action of human body can present more significantly diversity, and in this case, obviously standard cardioelectric template is the actual needs that can not meet dynamic electrocardiogram monitoring.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and provide a kind of be mainly the large data of using dynamic electro-cardiac monitor to generate carry out dynamic construction, optimize abnormal electrocardiogram data template variform realize polymorphic reconstruct and the optimization method of abnormal electrocardiogram template based on large data.
The object of the invention is to complete by following technical solution, described polymorphic reconstruct and the optimization method of realizing abnormal electrocardiogram template based on large data, it comprises the steps:
First, according to the resolution parameter of standard cardioelectric waveform, set up the parameterized template data with two-dimensional characteristics, and establish the ecg wave form template being formed by multiple minutiae point;
Secondly, utilize large data existing and edited dynamic electro-cardiac monitor, the pretreatment before comparing, carries out waveform merogenesis, then carries out waveform one by one with ecg wave form template and compares;
Again, on alignment algorithm, use misclassification rate (FRR), refuse to recognize rate (FAR), span: these three critical quantity of 0～1 similarity (TH) are added up and assessed final success rate of mating, and make polymorphic reconstruct or re-start the optimization of template data amount.
Described ecg wave form template of having established comprises: 2 kinds of cardiac electric axis, 2 kinds of PR intervals, 2 kinds of QTc intervals, 3 kinds of R ripples, 3 kinds of S ripples, 5 kinds of P ripples, 5 kinds of T ripples, 12 kinds of Q ripples, 36 kinds of ST ripples, 30 kinds of ST-T associatings.
Comparing between described ecg wave form template and arbitrarily EGC waveform data, by by misclassification rate, default three groups of threshold values of refusing to recognize rate, these three critical quantity of similarity carry out three times and calculate, and according to three statistical result, assess as follows:
(1) according to the similarity TH contrast in th result and last group calculated for the third time, for the ecg wave form lower than threshold value, be reconstructed;
(2) contrast with the similarity TH in second group according to the th result of calculating for the second time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume;
(3) contrast with the similarity TH in first group according to the th result of calculating for the first time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume; For the high waveform of discrimination, template is not carried out any processing.
The present invention is by the large data scanning to existing cardioelectric monitor, and EGC pattern variant class template can get more and more, classification is more and more thinner, and waveform template is also more and more accurate; Improve the quality of waveform template, nature can improve the accuracy of the structure of electrocardio disease template, and this accuracy rate for dynamic electrocardiogram monitoring can improve a lot.
Brief description of the drawings
Fig. 1 is ecg wave form template configuration classification schematic diagram of the present invention.
Fig. 2 is ecg wave form template of the present invention reconstruct and optimization schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described: polymorphic reconstruct and the optimization method of realizing abnormal electrocardiogram template based on large data of the present invention, it comprises the steps:
First, according to the resolution parameter of standard cardioelectric waveform, set up the parameterized template data with two-dimensional characteristics, and establish the ecg wave form template being formed by multiple minutiae point;
Secondly, utilize large data existing and edited dynamic electro-cardiac monitor, the pretreatment before comparing, carries out waveform merogenesis, then carries out waveform one by one with ecg wave form template and compares;
Again, on alignment algorithm, use misclassification rate (FRR), refuse to recognize rate (FAR), span: these three critical quantity of 0～1 similarity (TH) are added up and assessed final success rate of mating, and make polymorphic reconstruct or re-start the optimization of template data amount.
The ecg wave form template of described establishment comprises: 2 kinds of cardiac electric axis, 2 kinds of PR intervals, 2 kinds of QTc intervals, 3 kinds of R ripples, 3 kinds of S ripples, 5 kinds of P ripples, 5 kinds of T ripples, 12 kinds of Q ripples, 36 kinds of ST ripples, 30 kinds of ST-T associatings.
Comparing between described ecg wave form template and arbitrarily EGC waveform data, by by misclassification rate, default three groups of threshold values of refusing to recognize rate, these three critical quantity of similarity carry out three times and calculate, and according to three statistical result, assess as follows:
(1) according to the similarity TH contrast in th result and last group calculated for the third time, for the ecg wave form lower than threshold value, be reconstructed;
(2) contrast with the similarity TH in second group according to the th result of calculating for the second time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume;
(3) contrast with the similarity TH in first group according to the th result of calculating for the first time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume; For the high waveform of discrimination, template is not carried out any processing.
Embodiment: polymorphic reconstruct and the optimization method of realizing abnormal electrocardiogram template based on large data of the present invention, it relates to structure electrocardio medical diagnosis on disease and two kinds of data templates of ecg wave form; Wherein electrocardio medical diagnosis on disease template is to be made up of one group of multiple ecg wave form template that form a kind of genius morbi that have that are associated; Described ecg wave form template is made up of multiple minutiae point; The object of utilizing large data is that reconstruct is new or optimize existing ecg wave form template data, as shown in Figure 1.
First according to the resolution parameter of standard cardioelectric waveform, set up the parameterized template data with two-dimensional characteristics, established at present following ecg wave form template: cardiac electric axis (2 kinds), PR interval (2 kinds), QTc interval (2 kinds), R ripple (3 kinds), S ripple (3 kinds), P ripple (5 kinds), T ripple (5 kinds), Q ripple (12 kinds), ST ripple (36 kinds), ST-T combine (30 kinds); Observation process by the heart patient to a large amount of sees, the template kind of waveform is not enough far away, therefore need constantly find and add for a long time, and for existing electrocardio template, more sophisticated category.
According to the existing and large data of the dynamic electro-cardiac monitor of edited (by effective waveform montage in 5 minutes), the pretreatment before first comparing, carries out waveform merogenesis, then carries out waveform one by one with ecg wave form template and compares.On alignment algorithm we use misclassification rate (FRR), refuse to recognize rate (FAR), similarity (TH) (span: 0～1) three critical quantity are added up and assess final success rate of mating.Arbitrarily comparing between EGC waveform data and waveform template, by by misclassification rate, three groups of default threshold values of refusing to recognize rate, three critical quantity of similarity carry out three calculating, according to three statistical result, assess as follows:
(1) according to the similarity TH contrast in th result and last group calculated for the third time, for the ecg wave form lower than threshold value, be reconstructed;
(2) contrast with the similarity TH in second group according to the th result of calculating for the second time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume;
(3) contrast with the similarity TH in first group according to the th result of calculating for the first time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume.For the high waveform of discrimination, template is not carried out any processing.
The monitoring of dynamic electrocardiogram in Fig. 1, diagnose template realization by various diseases, each medical diagnosis on disease template all have oneself 4 No. ID.What for example, we determined acute myocardial infarction is for No. ID 8012.In each medical diagnosis on disease template, comprise one group of ecg wave form template, each ecg wave form template also forms for No. ID by 6, and front 2 is type code, and latter 4 is ecg wave form template code.For example the ecg wave form template data in acute myocardial infarction is expressed as:
8012：T0003；
Q0501；
R0341；
PR0005；
ST2232；
……
Ecg wave form template in Fig. 1, is divided equidistant piece with time shaft and is formed by multiple, and each piece is made up of one group of minutiae point, and each minutiae point is made up of a stack features value; Equidistant piece, minutiae point and eigenvalue are by 6 distinguished for No. ID, and explanatory content is the same.
The foundation of electrocardio medical diagnosis on disease template needs expert doctor to complete, cannot automatically be reconstructed by computer, therefore the present invention mainly refers to the structure of new waveform template and assessment and the optimization of existing waveform template data that ecg wave form template is carried out under the large data environment of dynamic ecg monitoring, so following example, taking ecg wave form template as objective for implementation.
1) set up the data structure of ecg wave form template
2) to Electrocardiographic waveform pre-treatment step:
● baseline drift processing
● cardiac electrical cycle is divided second
● waveform is cut apart
● piece is divided
●…...
3) realization of alignment algorithm:
First we need to determine that the predetermined amount of refusing to recognize rate (FAR), misclassification rate (FRR) and similarity (Similarity) three coupling is three groups:
0.1%、0.02%、0.75%;
0.05%、0.06%、0.85%;
0.03%、0.08%、0.93%;
Also need, to the every important indicator in waveform, piece, minutiae point, to set up rational comparison threshold value by a large amount of measuring and calculating, do not specify at this simultaneously.
The ECGWaveVerify (WaveData, WaveTemplate, VerifyParameter) of alignment algorithm;
Alignment algorithm flow process is shown in that Fig. 2 is as shown:
Fig. 2 is ecg wave form template of the present invention reconstruct and Optimizing Flow figure;
4) ecg wave form template reconstruct:
Template reconstruction of function is by name:
ECGWaveTemplateRefactoring(OldWaveTemplate,NewWaveTemplate,Parameter);
5) ecg wave form is template optimized:
Template optimized function is by name:
ECGWaveTemplateOptimize(WaveTemplate,Parameter);
Effect of the present invention just designs from the angle of electrocardio template, can improve to a certain extent precision and the reliability of ecg wave form template, promotes the accuracy rate of dynamic electrocardiogram monitoring.
Claims (3)
1. realize polymorphic reconstruct and the optimization method of abnormal electrocardiogram template based on large data, it is characterized in that described polymorphic reconstruct and optimization method are:
First, according to the resolution parameter of standard cardioelectric waveform, set up the parameterized template data with two-dimensional characteristics, and establish the ecg wave form template being formed by multiple minutiae point;
Secondly, utilize large data existing and edited dynamic electro-cardiac monitor, the pretreatment before comparing, carries out waveform merogenesis, then carries out waveform one by one with ecg wave form template and compares;
Again, on alignment algorithm, use misclassification rate (FRR), refuse to recognize rate (FAR), span: these three critical quantity of 0～1 similarity (TH) are added up and assessed final success rate of mating, and make polymorphic reconstruct or re-start the optimization of template data amount.
2. polymorphic reconstruct and the optimization method of realizing abnormal electrocardiogram template based on large data according to claim 1, the ecg wave form template of having established described in it is characterized in that comprises: 2 kinds of cardiac electric axis, 2 kinds of PR intervals, 2 kinds of QTc intervals, 3 kinds of R ripples, 3 kinds of S ripples, 5 kinds of P ripples, 5 kinds of T ripples, 12 kinds of Q ripples, 36 kinds of ST ripples, 30 kinds of ST-T associatings.
3. polymorphic reconstruct and the optimization method of realizing abnormal electrocardiogram template based on large data according to claim 1, it is characterized in that comparing between described ecg wave form template and any EGC waveform data, by by misclassification rate, default three groups of threshold values of refusing to recognize rate, these three critical quantity of similarity carry out three times and calculate, and according to three statistical result, assess as follows:
(1) according to the similarity TH contrast in th result and last group calculated for the third time, for the ecg wave form lower than threshold value, be reconstructed;
(2) contrast with the similarity TH in second group according to the th result of calculating for the second time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume;
(3) contrast with the similarity TH in first group according to the th result of calculating for the first time, for identifying but the very low template of discrimination, the optimization of again entering new template data volume; For the high waveform of discrimination, template is not carried out any processing.
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| CN110731762A (en) * | 2019-09-18 | 2020-01-31 | 平安科技（深圳）有限公司 | Method, device, computer system and readable storage medium for preprocessing pulse wave based on similarity |
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