Some regularity on how to locate electrodes for higher fECG SNRs

doi:10.1088/1674-1056/24/3/038702

›› 2015, Vol. 24 ›› Issue (3): 38702-038702.doi: 10.1088/1674-1056/24/3/038702

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Some regularity on how to locate electrodes for higher fECG SNRs

张洁敏^a, 黄晓林^a, 管群^b, 刘铁兵^b, 李萍^b, 肇莹^a, 刘红星^a

a School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China;
b Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, China

收稿日期:2014-02-21 修回日期:2014-10-13 出版日期:2015-03-05 发布日期:2015-03-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61271079) and the Supporting Plan Project of Jiangsu Province, China (Grant No. BE2010720).

Some regularity on how to locate electrodes for higher fECG SNRs

Zhang Jie-Min (张洁敏)^a, Huang Xiao-Lin (黄晓林)^a, Guan Qun (管群)^b, Liu Tie-Bing (刘铁兵)^b, Li Ping (李萍)^b, Zhao Ying (肇莹)^a, Liu Hong-Xing (刘红星)^a

a School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China;
b Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, China

Received:2014-02-21 Revised:2014-10-13 Online:2015-03-05 Published:2015-03-05
Contact: Liu Tie-Bing, Liu Hong-Xing E-mail:njbull@163.com;njhxliu@nju.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61271079) and the Supporting Plan Project of Jiangsu Province, China (Grant No. BE2010720).

摘要/Abstract

摘要： The electrocardiogram (ECG) recorded from the abdominal surface of a pregnant woman is a composite of maternal ECG, fetal ECG (fECG) and other noises, while only the fECG component is always needed by us. With different locations of electrode pairs on the maternal abdominal surface to measure fECGs, the signal-to-noise ratios (SNRs) of the recorded abdominal ECGs are also correspondingly different. Some regularity on how to locate electrodes to obtain higher fECG SNRs is needed practically. In this paper, 343 groups of abdominal ECG records were acquired from 78 pregnant women with different electrode pairs locating, and an appropriate extended research database is formed. Then the regularity on fECG SNRs corresponding to different electrode pairs locating was studied. Based on statistical analysis, it is shown that the fECG SNRs are significantly higher in certain locations than others. Reasonable explanation is also provided to the statistical result using the theories of the fetal cardiac electrical axis and the signal phase delay.

关键词: abdominal ECG, fetal ECG, SNR, statistical regularity

Abstract: The electrocardiogram (ECG) recorded from the abdominal surface of a pregnant woman is a composite of maternal ECG, fetal ECG (fECG) and other noises, while only the fECG component is always needed by us. With different locations of electrode pairs on the maternal abdominal surface to measure fECGs, the signal-to-noise ratios (SNRs) of the recorded abdominal ECGs are also correspondingly different. Some regularity on how to locate electrodes to obtain higher fECG SNRs is needed practically. In this paper, 343 groups of abdominal ECG records were acquired from 78 pregnant women with different electrode pairs locating, and an appropriate extended research database is formed. Then the regularity on fECG SNRs corresponding to different electrode pairs locating was studied. Based on statistical analysis, it is shown that the fECG SNRs are significantly higher in certain locations than others. Reasonable explanation is also provided to the statistical result using the theories of the fetal cardiac electrical axis and the signal phase delay.

Key words: abdominal ECG, fetal ECG, SNR, statistical regularity

中图分类号: (Biological signal processing)

87.85.Ng

87.57.N- (Image analysis)

张洁敏, 黄晓林, 管群, 刘铁兵, 李萍, 肇莹, 刘红星. Some regularity on how to locate electrodes for higher fECG SNRs[J]. , 2015, 24(3): 38702-038702.

Zhang Jie-Min (张洁敏), Huang Xiao-Lin (黄晓林), Guan Qun (管群), Liu Tie-Bing (刘铁兵), Li Ping (李萍), Zhao Ying (肇莹), Liu Hong-Xing (刘红星). Some regularity on how to locate electrodes for higher fECG SNRs[J]. Chin. Phys. B, 2015, 24(3): 38702-038702.

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Some regularity on how to locate electrodes for higher fECG SNRs

Some regularity on how to locate electrodes for higher fECG SNRs

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