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Related Experiment Video

Updated: Sep 3, 2025

Murine Fetal Echocardiography
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Novel Method for Fetal and Maternal Heart Rate Measurements Using 2-D Ultrasound Color Doppler Flow Images.

Yadan Wang1, Chichao Zheng2, Yi Zhou3

  • 1School of Mechanical Engineering, Hefei University of Technology, Hefei, China.

Ultrasound in Medicine & Biology
|July 25, 2022
PubMed
Summary

This study introduces a new ultrasound method to simultaneously measure fetal and maternal heart rates using color Doppler images. The technique offers efficient, real-time monitoring, aligning well with existing Doppler methods for fetal well-being assessment.

Keywords:
Fetal heart rateHistogram of color similarityMaternal heart rateUltrasound color Doppler flow images

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Obstetrics

Background:

  • Fetal heart rate (FHR) and maternal heart rate (MHR) are crucial for monitoring pregnancy health.
  • Current methods like pulsed-wave Doppler are standard but can be enhanced.
  • Ultrasound Color Doppler Flow Imaging (CDFI) offers rich dynamic blood flow information.

Purpose of the Study:

  • To develop and validate a novel method for simultaneous FHR and MHR measurement using CDFI.
  • To improve the efficiency and accessibility of real-time heart rate monitoring during pregnancy.
  • To provide a complementary technique for clinical fetal well-being assessment.

Main Methods:

  • A new method utilizing the histogram of color similarity in CDF images to detect periodic blood flow characteristics.
  • Signal processing involving bandpass filtering and autocorrelation to enhance periodicity and reduce noise.
  • Simultaneous measurement by selecting regions for umbilical artery and maternal blood flow, followed by peak detection for heart rate estimation.

Main Results:

  • The proposed CDFI method successfully measured FHR and MHR simultaneously with high computational efficiency.
  • Validation on a Doppler flow phantom and clinical data showed strong agreement with the established pulsed-wave Doppler method.
  • Correlation analysis and Bland-Altman plots confirmed the reliability of the novel technique.

Conclusions:

  • The novel CDFI-based method provides an accurate and efficient approach for simultaneous FHR and MHR measurement.
  • This technique serves as a valuable sanity check for real-time clinical monitoring.
  • It enhances the utility of CDFI in assessing fetal and maternal well-being during pregnancy.