The information content of Doppler ultrasound signals from the fetal heart

2001 ◽  
Vol 39 (6) ◽  
pp. 619-626 ◽  
Author(s):  
S. A. Shakespeare ◽  
J. A. Crowe ◽  
B. R. Hayes-Gill ◽  
K. Bhogal ◽  
D. K. James
Keyword(s):  
Information Content ◽  
Doppler Ultrasound ◽  
Fetal Heart ◽  
Ultrasound Signals

Estimating fetal heart rate from multiple Doppler ultrasound signals.

2010 ◽  
Vol 128 (4) ◽  
pp. 2305-2305
Author(s):  
I. Voicu ◽  
J.‐M. Girault ◽  
D. Kouame ◽  
M. Fournier‐Massignan ◽  
F. Perrotin
Keyword(s):  
Heart Rate ◽  
Doppler Ultrasound ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Ultrasound Signals

Predictive analog to digital conversion of Doppler ultrasound signals

1995 ◽  
Vol 42 (3) ◽  
pp. 260-268
Author(s):  
S. Boe ◽  
K. Kristoffersen
Keyword(s):  
Doppler Ultrasound ◽  
Digital Conversion ◽  
Analog To Digital ◽  
Analog To Digital Conversion ◽  
Ultrasound Signals

scholarly journals Non-invasive Fetal Electrocardiography for Intrapartum Cardiotocography

2020 ◽  
Vol 8 ◽  
Author(s):  
Rik Vullings ◽  
Judith O. E. H. van Laar
Keyword(s):  
Heart Rate ◽  
Doppler Ultrasound ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Monitoring ◽  
Irreversible Damage ◽  
Scalp Electrode ◽  
Non Invasive ◽  
Electrophysiological Measurements ◽  
Fetal Electrocardiography

Fetal monitoring is important to diagnose complications that can occur during pregnancy. If detected timely, these complications might be resolved before they lead to irreversible damage. Current fetal monitoring mainly relies on cardiotocography, the simultaneous registration of fetal heart rate and uterine activity. Unfortunately, the technology to obtain the cardiotocogram has limitations. In current clinical practice the fetal heart rate is obtained via either an invasive scalp electrode, that poses risks and can only be applied during labor and after rupture of the fetal membranes, or via non-invasive Doppler ultrasound technology that is inaccurate and suffers from loss of signal, in particular in women with high body mass, during motion, or in preterm pregnancies. In this study, transabdominal electrophysiological measurements are exploited to provide fetal heart rate non-invasively and in a more reliable manner than Doppler ultrasound. The performance of the fetal heart rate detection is determined by comparing the fetal heart rate to that obtained with an invasive scalp electrode during intrapartum monitoring. The performance is gauged by comparing it to performances mentioned in literature on Doppler ultrasound and on two commercially-available devices that are also based on transabdominal fetal electrocardiography.

Flexible sensor matrix with dynamic channel weighting for improved estimation of the fetal heart rate by Doppler ultrasound

2017 ◽  
Author(s):  
Paul Hamelmann ◽  
Massimo Mischi ◽  
Rik Vullings ◽  
Alexander F. Kolen ◽  
Lars Schmitt ◽  
...  
Keyword(s):  
Heart Rate ◽  
Doppler Ultrasound ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Flexible Sensor ◽  
Dynamic Channel
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