CN110236530A - A kind of electrocardiosignal QRS wave group localization method, device and computer storage medium - Google Patents

A kind of electrocardiosignal QRS wave group localization method, device and computer storage medium Download PDF

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CN110236530A
CN110236530A CN201910537562.2A CN201910537562A CN110236530A CN 110236530 A CN110236530 A CN 110236530A CN 201910537562 A CN201910537562 A CN 201910537562A CN 110236530 A CN110236530 A CN 110236530A
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data
electrocardiosignal
label value
data segment
localization method
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罗伟
朱涛
李毅
朱佳兵
王瑶
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WUHAN ZONCARE BIO-MEDICAL ELECTRONICS Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/318Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346Analysis of electrocardiograms
    • A61B5/349Detecting specific parameters of the electrocardiograph cycle
    • A61B5/366Detecting abnormal QRS complex, e.g. widening
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7225Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235Details of waveform analysis
    • A61B5/7264Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
    • A61B5/7267Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems involving training the classification device

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Abstract

The present invention relates to ECG's data compression technical field, a kind of electrocardiosignal QRS wave group localization method, device and computer storage medium are disclosed.Wherein, method is the following steps are included: acquire a plurality of electrocardiosignal building sample data set;Each sample data is demarcated, and the sample data demarcated is cut into multiple data segments;For the data segment addition embody its whether include QRS complex training label value;The data segment added with training label value is trained by neural network, obtains Tag Estimation model;The QRS complex positioning of case data is carried out according to the Tag Estimation model.The present invention has to abnormal electrocardiogram signal framing technical effect with high accuracy.

Description

A kind of electrocardiosignal QRS wave group localization method, device and computer storage medium
Technical field
The present invention relates to ECG's data compression technical fields, and in particular to a kind of electrocardiosignal QRS wave group localization method, dress It sets and computer storage medium.
Background technique
In cardiac diagnosis, the positioning of QRS complex is had very important effect.Currently, traditional QRS complex location algorithm Higher positioning is able to carry out for normal ecg wave form, susceptibility and precision can reach requirement but for cardiac'ss The QRS complex of the unusual waveforms such as special waveform identifies that effect is very unsatisfactory.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of electrocardiosignal QRS wave group localization method, device are provided And computer storage medium, solve the low technical problem of the QRS complex accuracy of identification for unusual waveforms in the prior art.
To reach above-mentioned technical purpose, technical solution of the present invention provides a kind of electrocardiosignal QRS wave group localization method, packet Include following steps:
Acquire a plurality of electrocardiosignal building sample data set;
Each sample data is demarcated, and the sample data demarcated is cut into multiple data segments;
For the data segment addition embody its whether include QRS complex training label value;
The data segment added with training label value is trained by neural network, obtains Tag Estimation model;
The QRS complex positioning of case data is carried out according to the Tag Estimation model.
The present invention also provides a kind of electrocardiosignal QRS wave group positioning device, including processor and memory, the storages It is stored with computer program on device, when the computer program is executed by the processor, realizes the electrocardiosignal QRS wave group Localization method.
The present invention also provides a kind of computer storage mediums, are stored thereon with computer program, the computer program quilt When processor executes, the electrocardiosignal QRS wave group localization method is realized.
Compared with prior art, it the beneficial effect comprise that the present invention cuts sample data, is cut For multiple data segments, training label value is added for each data segment, to embody whether data segment wraps by training label value Data segment is trained containing QRS complex, then by neural network, obtains Tag Estimation model, realizes the QRS wave of case data Group's positioning.The present invention is cut by sample data the positioning of QRS complex being converted to whether data segment includes sentencing for QRS complex It is disconnected, and then neural network Tag Estimation model is utilized, realize whether sample data section includes QRS complex by Tag Estimation Accurate judgement, realize the accurate positionin of QRS complex.
Detailed description of the invention
Fig. 1 is the flow chart of one embodiment of electrocardiosignal QRS wave group localization method provided by the invention;
Fig. 2 is the comparison diagram of traditional QRS complex detection algorithm Detection Point and reference point;
Fig. 3 is the calibration schematic diagram of calibration one embodiment of sample data provided by the invention;
Fig. 4 is the prediction result of one embodiment of prediction label value obtained using Tag Estimation model provided by the invention Figure;
Fig. 5 is the filter result figure in Fig. 4 after prediction label value filtering.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Embodiment 1
As shown in Figure 1, the embodiment of the present invention 1 provides electrocardiosignal QRS wave group localization method, comprising the following steps:
S1, a plurality of electrocardiosignal of acquisition construct sample data set;
S2, calibration each sample data, and the sample data demarcated is cut into multiple sample data sections;
S3, for the sample data section addition embody its whether include QRS complex training label value;
S4, the sample data section added with training label value is trained by neural network, obtains Tag Estimation mould Type;
S5, the QRS complex that case data are carried out according to the Tag Estimation model position.
Currently, traditional QRS location algorithm is low to accuracy of identification such as special waveform, the unusual waveforms of cardiac.Tool Body, the positioning knot using traditional QRS location algorithm to the progress QRS complex positioning of three sections of different data is shown in Fig. 2 Fruit figure.The data C that the data A and number that number is data00148 are data00480 is normal electrocardiosignal, and number is The data B of data00004 is abnormal electrocardiogram signal.Upper row's point is R wave wave crest reference point in the positioning result of three segment datas Detectted QRS Location, lower row's point are the R wave wave crest test point detected using traditional QRS location algorithm Referrence QRS Location.From figure 2, it is seen that traditional QRS location algorithm when positioning to abnormal electrocardiogram, leaks The case where inspection and false retrieval, clearly data B fallout ratio reached 87.5%.
In response to this problem, depth learning technology is applied in the QRS complex positioning of electrocardiosignal for the embodiment of the present invention.Tool Body, after being demarcated to sample data, it is cut, is converted the positioning of QRS complex by sample data cutting For sample data section whether include QRS complex judgement.Training label value is added for each sample data section, to pass through instruction Practice label value and embody whether sample data section includes QRS complex, sample data section is trained in conjunction with neural network, is obtained Tag Estimation model is positioned by the QRS complex of Tag Estimation model realization case data.
Preferably, the sample data demarcated is cut into multiple sample data sections, specifically:
The sample data demarcated is cut to set step-length and be sized the sizes such as at equal intervals, obtains multiple samples Notebook data section.
It is cut to sample data has been demarcated, it is root that the size that this preferred embodiment chooses data cutting window, which is 0.25s, It is determined according to the range in human ecg signal period, the heart rate of human ecg signal is also single between 30--300bpm The length of a cardiac electrical cycle is 0.2s--2s, between general QRS complex width 0.12-0.2s, selects the size of data cutting window The width less times greater than QRS complex is needed, is found through experiments that the size of selection data cutting window in 0.25s or so, is tested Effect is optimal.Specifically, data sampling frequency is 500HZ in the present embodiment, cutting size is 0.25s, i.e., cutting size is 125 A unit length.Step-length to describe cutting size and is hereinafter cut with unit length number, selecting cutting step-length is 5 It is a.The length number of whole section of sample data signal is 5000, then the sample data section after cutting is respectively as follows: signal [1,2 ..., 125], signal [6,7 ..., 130], signal [4876,4877 ..., 5000], that is, complete sample The cutting of data.
Preferably, the sample data is demarcated, specifically:
Demarcate the R crest location of the sample data.
This preferred embodiment passes through the method manually demarcated, as shown in figure 3, circle calibration position is R crest location, circle The adjacent triangle in both sides be the QRS complex comprising the R wave crest start-stop point.When the R crest location and actual R wave of calibration The distance of peak position is no more than the size of QRS complex, can determine that the R crest location demarcated in the present embodiment exists to demarcate effectively Before and after practical R crest location within the scope of 37.5ms, can it regard as effectively.
Preferably, for the sample data section addition embody its whether include QRS complex training label value, specifically:
Centered on the R crest location nearest apart from the sample data section, it is cut into the sample data and institute State the reference field of sample data section same size;
Calculate the IOU value of the sample data Duan Yuqi reference field;
It is that the sample data section adds training label value according to the IOU value.
This preferred embodiment introduces IOU, the i.e. concept of Intersection over Union, and IOU is that a kind of measure exists Specific data concentrates a standard of detection respective objects accuracy.The present invention determines the sample data after cutting by IOU Duan Zhong, which sample data section is positive sample, that is, includes QRS complex section, which sample data section is negative sample, that is, is not included QRS complex section is conducive to subsequent training.In order to guarantee data validity.After being cut to whole sample data, after cutting Sample data section calculate and the IOU value of its reference field.Wherein: the size of reference field is identical as sample data section, in reference field Point is located at the nearest R crest location of calibration distance sample data segment, and head and the tail are respectively forward and to be translated in based on midpoint " window size subtracts 1 divided by 2 " a point translates 125/2-1=62 point in the present embodiment.
Preferably, training label value is added to the sample data section according to the IOU value, specifically:
When the IOU value is less than the first given threshold, add for the sample data section without QRS wave label value;
When the IOU value is greater than the second given threshold, QRS wave label value is added with for the sample data section;
When the IOU value is greater than first given threshold and is less than second given threshold, add without label Add.
In this preferred embodiment, the first given threshold takes 0.3, and the second given threshold takes 0.7, and no QRS wave label value takes 0, There is QRS wave label value to take 1.When IOU value [0.3,0.7] ∈, this sample data section is given up, not as training sample, because This addition without label;As IOU < 0.3, demarcating this sample data section corresponding label is 0, illustrates this sample number According to Duan Zhongwu QRS complex;As IOU > 0.7, demarcating this sample data section corresponding label is 1, illustrates this sample data section In contain a QRS complex.
Preferably, the neural network is ResNet neural network.
After obtaining sample data section and corresponding training label value, this preferred embodiment is neural by 32 layers of ResNet Network is trained.ResNet neural network has one-dimensional convolutional coding structure, two-dimensional convolution structure and multidimensional convolution structure, this implementation The ResNet neural network of example application is one-dimensional convolutional coding structure.
Preferably, it is positioned according to the QRS complex that the Tag Estimation model carries out case data, specifically:
The case data are cut into multiple case data segments, each case data segment is inputted into the Tag Estimation Model obtains the prediction label value of each case data segment;
By the prediction label value compared with the trained label value, judge whether corresponding case data segment includes QRS wave Group, obtains the case data segment comprising QRS complex.
After obtaining Tag Estimation model, the prediction label value of case data segment can be obtained, according to prediction label value Judge whether corresponding case data segment includes QRS complex, to realize the positioning of QRS complex.
Specifically, this preferred embodiment, the case data cutting that can be 0001 by data number is 976 case data Section, the cutting of case data need to meet IOU standard when Tag Estimation model foundation.976 case data segments are inputted respectively The prediction of label value is carried out into trained Tag Estimation model, obtained prediction result is as shown in Figure 4.Compare prediction label Value and training label value, training label value include representing to have QRS wave label value comprising QRS complex, further include representing not including QRS complex without QRS wave label value, if prediction label value is closer to there is QRS wave label value to indicate this case data segment In contain QRS complex, if prediction label value indicates not containing in this case data segment closer to no QRS wave label value QRS complex.
Specifically, comparison prediction label value and training label value can be used filtering processing and realize, to the prediction of result in Fig. 4 Figure is filtered, this preferred embodiment is extreme value filtering processing: having taken QRS wave label value and no QRS wave label value Average value, i.e., 0.5, when the prediction label value of case data segment be more than or equal to 0.5 when, enable the prediction label value be assigned a value of 1;When When the prediction label value of case data segment is less than 0.5, the prediction label value is enabled to be assigned a value of 0;Filter result figure is as shown in Figure 5:
Preferably, electrocardiosignal QRS wave group localization method further include:
Take the midpoint of the case data segment comprising QRS complex;
The middle position is scaled to the location information of the case data, obtains the R wave crest position of the case data It sets.
By being filtered to the prediction result in Fig. 4, filter result shown in Fig. 5 is obtained, it is all continuous pre- from Fig. 5 Surveying label value is to have in the sample data section of QRS wave label value, takes its midpoint, as position corresponding to case data R wave crest It sets, i.e. position shown in vertical line in Fig. 5.At the QRS wave for the case data for converting back original by the midpoint being marked in Fig. 5, It can be seen that in Fig. 5, x-axis data point number is 976, this is because original data volume is 5000, window size is 125, and window is mobile Step-length be 5 caused by, (5000-125)/5+1=976.
Embodiment 2
The embodiment of the present invention 2 provides electrocardiosignal QRS wave group positioning device, including processor and memory, institute It states and is stored with computer program on memory, when the computer program is executed by the processor, realize that any of the above is implemented The electrocardiosignal QRS wave group localization method that example provides.
Electrocardiosignal QRS wave group positioning device provided in an embodiment of the present invention, for realizing the positioning of electrocardiosignal QRS wave group Method, therefore, the technical effect that above-mentioned electrocardiosignal QRS wave group localization method has, electrocardiosignal QRS wave group positioning device It is likewise supplied with, details are not described herein.
Embodiment 3
The embodiment of the present invention 3 provides computer storage medium, is stored thereon with computer program, the computer journey When sequence is executed by processor, the electrocardiosignal QRS wave group localization method that any of the above embodiment provides is realized.
Computer storage medium provided in an embodiment of the present invention, for realizing electrocardiosignal QRS wave group localization method, because This, the technical effect that above-mentioned electrocardiosignal QRS wave group localization method has, computer storage medium is likewise supplied with, herein not It repeats again.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention It protects in range.

Claims (10)

1. a kind of electrocardiosignal QRS wave group localization method, which comprises the following steps:
Acquire a plurality of electrocardiosignal building sample data set;
Each sample data is demarcated, and the sample data demarcated is cut into multiple data segments;
For the data segment addition embody its whether include QRS complex training label value;
The data segment added with training label value is trained by neural network, obtains Tag Estimation model;
The QRS complex positioning of case data is carried out according to the Tag Estimation model.
2. electrocardiosignal QRS wave group localization method according to claim 1, which is characterized in that the sample number that will have been demarcated According to being cut into multiple data segments, specifically:
The sample data demarcated is cut to set step-length and be sized the sizes such as at equal intervals, obtains multiple data Section.
3. electrocardiosignal QRS wave group localization method according to claim 1, which is characterized in that the sample data is demarcated, Specifically:
Demarcate the R crest location of the sample data.
4. electrocardiosignal QRS wave group localization method according to claim 3, which is characterized in that added for the data segment Embody its whether include QRS complex training label value, specifically:
Centered on the R crest location nearest apart from the data segment, it is cut into the sample data and the data segment The reference field of same size;
Calculate the IOU value of the data segment Yu its reference field;
It is that the data segment adds training label value according to the IOU value.
5. electrocardiosignal QRS wave group localization method according to claim 4, which is characterized in that according to the IOU value to institute It states data segment and adds training label value, specifically:
When the IOU value is less than the first given threshold, add for the data segment without QRS wave label value;
When the IOU value is greater than the second given threshold, QRS wave label value is added with for the data segment;
When the IOU value is greater than first given threshold and is less than second given threshold, added without label.
6. electrocardiosignal QRS wave group localization method according to claim 1, which is characterized in that the neural network is ResNet neural network.
7. electrocardiosignal QRS wave group localization method according to claim 1, which is characterized in that according to the Tag Estimation Model carries out the QRS complex positioning of case data, specifically:
The case data are cut into multiple case data segments, each case data segment is inputted into the Tag Estimation mould Type obtains the prediction label value of each case data segment;
By the prediction label value compared with the trained label value, judge whether corresponding case data segment includes QRS complex, is obtained To the case data segment comprising QRS complex.
8. electrocardiosignal QRS wave group localization method according to claim 7, which is characterized in that further include:
Take the midpoint of the case data segment comprising QRS complex;
The middle position is scaled to the location information of the case data, obtains the R crest location of the case data.
9. a kind of electrocardiosignal QRS wave group positioning device, which is characterized in that including processor and memory, the memory On be stored with computer program, when the computer program is executed by the processor, realize as described in claim 1-8 is any Electrocardiosignal QRS wave group localization method.
10. a kind of computer storage medium, is stored thereon with computer program, which is characterized in that the computer program is located When managing device execution, electrocardiosignal QRS wave group localization method a method as claimed in any one of claims 1-8 is realized.
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CN111214225A (en) * 2019-12-24 2020-06-02 北京超思电子技术有限责任公司 Room excitement identification method and device, electronic equipment and readable storage medium
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CN115770048A (en) * 2021-09-08 2023-03-10 上海联影医疗科技股份有限公司 Electrocardiosignal processing method and device, computer equipment and storage medium
CN114159070A (en) * 2021-12-20 2022-03-11 武汉大学 Real-time cardiac arrest risk prediction method and system of convolutional neural network

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