Non-invasive fetal electrocardiosignal quality evaluation method
An electrocardiographic signal and quality assessment technology, applied in the field of medical signal processing, can solve the problem that it is difficult to accurately judge the signal quality, there are few methods for evaluating the quality of abdominal electrocardiographic signals and fetal electrocardiographic signals, and the individual differences of fetal electrocardiographic signals are large. and other problems, to achieve the effect of saving computational complexity, improving classification accuracy, and eliminating individual differences
Pending Publication Date: 2022-01-11
BEIJING UNIV OF TECH
View PDF11 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] There are relatively few methods for evaluating the quality of abdominal ECG signals and fetal ECG signals, and most of them judge the abdominal ECG signals or fetal ECG signals by calculating the signal quality index.
At the same time, due to the large individual differences between the collected abdominal ECG signal and the separated fetal ECG signal, it is difficult to accurately judge the signal quality by only calculating a certain signal quality index.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] The present invention provides a method for assessing the quality of non-invasive fetal ECG signal, the general process of which is as follows: figure 1 Shown; where the abdominal ECG signal quality assessment method is as follows figure 2 As shown, the fetal ECG signal quality assessment method is as follows: image 3 As shown, the actual operation process of signal quality assessment is as follows Figure 4 and Figure 5 Shown; the specific implementation steps are as follows:
[0026] Step 1. Gather multiple groups of 4-channel abdominal electrical signals X;
[0027] Step 2. Perform preprocessing on the acquired signal X and separation of the fetal ECG signal, and classify the quality evaluation results of the preprocessed abdominal ECG signal and the separated fetal ECG signal into two categories: acceptable and unacceptable ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a non-invasive fetal electrocardiosignal quality evaluation method. An obvious fetal electrocardiosignal is distinguished from a signal which is strongly interfered or is not clear in fetal electrocardiosignal. According to the method, collected abdominal electric signals are preprocessed and separated, information entropy, Lempel-Ziv complexity, maternal-fetal energy ratio, R wave number and the like of the preprocessed abdominal electrocardio signals and fetal electrocardio signals obtained through separation are calculated to serve as evaluation parameters, and whether the abdominal electrocardiosignal and the fetal electrocardiosignal are quality-acceptable or quality-unacceptable is judged by using a support vector machine. According to the method, signal quality classification of the abdominal electrocardiosignals and the fetal electrocardiosignals is achieved, the situation that the fetal heart rate is wrongly extracted due to the fact that the signal quality is not high can be avoided, the signal quality can be judged in real time in the long-time fetal heart monitoring process, and certain help is provided for non-invasive extraction of the accurate and reliable fetal heart rate.
Description
technical field [0001] The invention belongs to the technical field of medical signal processing, in particular to a method for evaluating the quality of a non-invasive fetal electrocardiogram signal. Background technique [0002] The mortality rate of fetuses and newborns is an important basis for measuring the development level of a country's economy, culture and medical care. [0003] Other problems such as fetal distress in the mother's body will be directly reflected in the change of fetal heart rate. Fetal health monitoring can detect abnormal conditions such as certain fetal heart diseases, suffocation caused by umbilical cord entanglement, and intrauterine distress in advance, so as to achieve fetal health and safety prevention and eugenics, and can greatly reduce fetal and neonatal mortality. [0004] At present, there are two main methods to obtain fetal heart rate: ultrasound Doppler method and fetal ECG method. Among them, there are many deficiencies in the ult...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/344A61B5/346
CPCA61B5/344A61B5/7221A61B5/7203A61B5/7264A61B5/7225
Inventor 张松谢佳兴杨益民郝冬梅杨琳李旭雯张建楠张雅俊刘建利
Owner BEIJING UNIV OF TECH