Maternal perception of foetal movement compared with movement detected by real‐time ultrasound: An exploratory study

Monitoring fetal wellbeing is a compelling problem in modern obstetrics. Clinicians have become increasingly aware of the link between fetal activity (movement), well-being, and later developmental outcome. We have recently developed an ambulatory accelerometer-based fetal activity monitor (AFAM) to record 24-hour fetal movement. Using this system, we aim at developing signal processing methods to automatically detect and quantitatively characterize fetal movements. The first step in this direction is to test the performance of the accelerometer in detecting fetal movement against real-time ultrasound imaging (taken as the gold standard). This paper reports first results of this performance analysis.

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“…In [20], maternal perception of fetal movements has been determined to have a sensitivity of around 36%.…”

Section: Resultsmentioning

confidence: 99%

Accelerometer-based fetal movement detection

Mesbah

Khlif

East

et al. 2011

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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“…Performance results are shown in Table 3 where only 46% of the movements were felt by the pregnant women. For a larger population, this rate can be lower (36%) as reported in [10]. Table 3.…”

Section: Table 2 Detector Performancementioning

confidence: 86%

“…Several methods have been used to study fetal movements including electromagnetic detection, mechanical fetal actogram, external tocometry, and maternal counting [8], all of which are unreliable and only provide limited information [9,10]. Although there are no known safety concerns for the use of ultrasound, its use is only recommended for a limited duration, based on the principle of ALARA (as low as reasonably achievable), using the lowest acoustic output for the shortest time required to obtain adequate detail [11].…”

Section: Introductionmentioning

confidence: 99%

A passive DSP approach to fetal movement detection for monitoring fetal health

Khlif

Boashash

Layeghy

et al. 2012

2012 11th International Conference on Information Science, Signal Processing and Their Applications (ISSPA)

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Fetal movement can help clinicians understand fetal functional development. Active methods for fetal monitoring such as ultrasound are expensive and there are objections to their long term usage. This paper presents a passive approach for fetal monitoring which uses solid state accelerometers placed on the mother's abdomen for the collection of fetal movements.The proposed fetal movement detection is based on the root-mean-square (RMS) of time series. The detection performance is evaluated against real-time ultrasound imaging. A good detection rate of 80% and a positive predictive value of 77% were achieved based on the analysis of 4 subjects.Time-frequency (TF) analysis of fetal movement signals, using a number of quadratic TF distributions, has shown that some fetal movements are spectrally characterized by nonstationary and nonlinear behavior and that fetal activity is generally below 20 Hz. More data are needed for further TF analysis and future detections will depend on the outcome of this analysis.

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“…In [20], maternal perception of fetal movements was determined to have a sensitivity of around 36%. Fig.…”

Section: A Current Stagementioning

confidence: 99%

Time-frequency characterization of tri-axial accelerometer data for fetal movement detection

Khlif

Boashash

Layeghy

et al. 2011

2011 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)

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Monitoring fetal wellbeing is a significant problem in modern obstetrics. Clinicians have become increasingly aware of the link between fetal activity and its well-being. Using data acquired by accelerometry sensors, we use TFDs such as the spectrogram and modified B distribution (MBD) to characterize fetal movements in the time-frequency (TF) domain. This paper reports a fetal activity detection method based on the root-meansquare (RMS) of time series and evaluates its performance against real-time ultrasound imaging, taken as the gold standard. The evaluation showed better performance with the RMS-based detector as compared to maternal perception. The evaluation also showed that the detector performance is age-dependent and that fetal movement is characterized by different TF morphology. Time-frequency distributions (TFDs) with better resolution such as MBD are investigated for TF-based techniques for the detection of fetal movements.

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Maternal perception of foetal movement compared with movement detected by real‐time ultrasound: An exploratory study

Cited by 23 publications

References 17 publications

Accelerometer-based fetal movement detection

Accelerometer-based fetal movement detection

A passive DSP approach to fetal movement detection for monitoring fetal health

Time-frequency characterization of tri-axial accelerometer data for fetal movement detection

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