Figures index

From

Review Article: Non-Invasive Fetal Heart Rate Monitoring Techniques

Enas W. Abdulhay, Rami J. Oweis, Asal M. Alhaddad, Fadi N. Sublaban, Mahmoud A. Radwan, Hiyam M. Almasaeed

Biomedical Science and Engineering. 2014, 2(3), 53-67 doi:10.12691/bse-2-3-2
  • Figure 1. Chronology of fetal heart rate monitoring development [5,9]
  • Figure 2. location of abdominal electrodes [17]
  • Figure 3. relation between BMI and recording quality. Figure A is related to the group with GA between 20-25 weeks, figure B is for GA between 26-33 weeks and figure C is for GA > 34 weeks [19]
  • Figure 4. The proposed 4-stage Fetal Heart Rate (FHR) extraction method
  • Figure 5. Proposed processing steps
  • Figure 6. optical fetal heart rate detection system [32]
  • Figure 7. Illustration of the optical shunt problem [36]
  • Figure 8. Optical sensor array configurations; (a) square, (b) diamond and (c) star [39]
  • Figure 9. The algorithm used for fetal PPG extraction [40]
  • Figure 10. An external fetal cardiotocography (CTG) monitor
  • Figure 11. Doppler ultrasound system
  • Figure 12. Block diagram of the electronic module [60]
  • Figure 13. FHR calculated using the Doppler US algorithm compared to FHR obtained using direct fECG [66]
  • Figure 14. Arrangement of gradiometers and magnetometers [76]
  • Figure 15. Signal processing used to detect FHR and averaged fetal PQRST complex [77]
  • Figure 16. Magnitudes of FMCG signals in Tesla [77]