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Proceedings Paper

Support-vector-machines-based multidimensional signal classification for fetal activity characterization
Author(s): S. Ribes; I. Voicu; J. M. Girault; M. Fournier; F. Perrotin; F. Tranquart; D. Kouamé
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Paper Abstract

Electronic fetal monitoring may be required during the whole pregnancy to closely monitor specific fetal and maternal disorders. Currently used methods suffer from many limitations and are not sufficient to evaluate fetal asphyxia. Fetal activity parameters such as movements, heart rate and associated parameters are essential indicators of the fetus well being, and no current device gives a simultaneous and sufficient estimation of all these parameters to evaluate the fetus well-being. We built for this purpose, a multi-transducer-multi-gate Doppler system and developed dedicated signal processing techniques for fetal activity parameter extraction in order to investigate fetus's asphyxia or well-being through fetal activity parameters. To reach this goal, this paper shows preliminary feasibility of separating normal and compromised fetuses using our system. To do so, data set consisting of two groups of fetal signals (normal and compromised) has been established and provided by physicians. From estimated parameters an instantaneous Manning-like score, referred to as ultrasonic score was introduced and was used together with movements, heart rate and associated parameters in a classification process using Support Vector Machines (SVM) method. The influence of the fetal activity parameters and the performance of the SVM were evaluated using the computation of sensibility, specificity, percentage of support vectors and total classification accuracy. We showed our ability to separate the data into two sets : normal fetuses and compromised fetuses and obtained an excellent matching with the clinical classification performed by physician.

Paper Details

Date Published: 25 March 2011
PDF: 10 pages
Proc. SPIE 7968, Medical Imaging 2011: Ultrasonic Imaging, Tomography, and Therapy, 79680D (25 March 2011); doi: 10.1117/12.877680
Show Author Affiliations
S. Ribes, Institut de Recherche en Informatique de Toulouse, CNRS, Univ. of Toulouse (France)
I. Voicu, INSERM, CNRS, Univ. of Tours (France)
J. M. Girault, INSERM, CNRS, Univ. of Tours (France)
M. Fournier, CICT Univ. Hospital Tours (France)
F. Perrotin, CICT Univ. Hospital Tours (France)
F. Tranquart, Bracco SA (Switzerland)
D. Kouamé, Institut de Recherche en Informatique de Toulouse, CNRS, Univ. of Toulouse (France)


Published in SPIE Proceedings Vol. 7968:
Medical Imaging 2011: Ultrasonic Imaging, Tomography, and Therapy
Jan D'hooge; Marvin M. Doyley, Editor(s)

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