Health  Vol.3 No.8 , August 2011
Electrical impedance tomography based image reconstruction and feto-maternal monitoring in pregnancy
ABSTRACT
Standard methods of monitoring the fetus and maternal health during labor are cardioto-cogram, tocography, ultrasound and magneto-cardiograpghy. These methods have some limi-tations in real time continuous monitoring and cause some degree of inconvenience to the pa-tient and demand special attendance of the ob-stetrician also these methods cannot be used for continuous monitoring of the fetal well being. To overcome the limitations of above techniques, a non-invasive bioimpedance measuring method is proposed. This technique helps in monitoring and recording of the electrical field distribution of a closed object. The output variation on the outer surface is likely to provide information because of fetal movements and related physio-logical parameters. It will also help in the de-velopment of Electrical Impedance Tomography based imaging technique for a closed body system with special reference to fetal monitor-ing in-utero during pregnancy and labor. Also we have developed the data acquisition system of 16 electrodes with software for image recon-struction.

Cite this paper
nullPahuja, S. , Anand, S. and Sengupta, A. (2011) Electrical impedance tomography based image reconstruction and feto-maternal monitoring in pregnancy. Health, 3, 482-486. doi: 10.4236/health.2011.38079.
References
[1]   Stuchly, M.A. and Gandhi, O.P. (1994) Induced electric currents in models of man and rodents from 60 Hz magnetic fields. Engineering, 41, 1088-1093.

[2]   Gordon, A.S., Strauss, J. and George, A.M. (1965) Electrical impedance of isolated amnion. Biophysical Journal, 5, 855-865.

[3]   Hoe, Y., Gurewitsch, E.D., Shaahinfar, A., Somponnat, E.S., Ruffner, S.M., Kenny, H.S. and Allen, H. (2004) Measuring bioimpedance in the human uterine cervix: Towards early detection of preterm labor. 1-5.

[4]   Steer, C.M. and Hertsch, G.J. (1950) Electrical activity of the human uterus in labor: The electrohysterograph. American Journal of Obstetrics & Gynecology, 59, 25- 40.

[5]   Katz, M., Gill, P.J., and Newman, R.B. (1986) Detection of preterm labor by ambulatory monitoring of uterine activity: A preliminary repot. Obstetrics & Gynecology, 68, 773-778.

[6]   Lucidi, R.S., Blumenfeld, L.A. and Chez, R.A. (2000) Cervimetry: A review of methods for measuring cervical dilation during labor. Obstetrical & Gynecological Survey, 55, 312-320.

[7]   Friedman, E.A. (1956) Cervimetry: An objective method for the study of cervical dilation in labor. American Journal of Obstetrics & Gynecology, 71, 1189-1193.

[8]   Myoung, H.C., Tzu, K., Gary, D.I. and Jonathan, C.N. (2007) A reconstruction algorithm for breast cancer imaging with electrical impedance tomography in mammography geometry. Biomedical Engineering, 54, 700- 710.

[9]   Smith, R.W., Ian, L. and Brian, H.B. (1995) A real-time electrical impedance tomography system for clinical use-design and preliminary results. Biomedical Engineering, 42, 133-140.

[10]   Ritsuko, Y., Kyousuke, T., Toru, F. and Takeshi, M. (2003) Bioelectrical impedance analysis in the clinical management of preeclamtic women with edema. Journal of Perinatal Medicine, 31, 275-280.

[11]   Leman, H., Catherine, M. and Jean, G. (1999) Use of the electrohysterogram signal for characterization of contractions during pregnancy. IEEE Transactions on Biomedical Engineering, 46, 672-680.

[12]   Gaysen, A., Dua, S.K., Sengupta, A. and Nagchoudhuri, Effect of non-linearity doppler waveforms through novel model. Biomedical Engineering Online, 1-13.

[13]   Ritsuko, Y., Kyousuke, T., Toru, F. and Takeshi, M. (2003) Bioelectrical impedance analysis in the clinical management of preeclamtic women with edema. Journal of Perinatal Medicine, 31, 275-280.

[14]   Katz, M., Gill, P.J. and Newman, R.B. (1986) Detection of preterm labor by ambulatory monitoring of uterine activity: A preliminary repot. Obstetrics and Gynecology, 68, 775-778.

[15]   Goovaerts, H.G., Rompelman, O. and Gejin, H.P. (1989) A transducer for detection of fetal breathing movement. IEEE Transactions on Biomedical Engineering, BME-36, 471-478. doi:10.1109/10.18754

[16]   Magann, E., Perry, K.G., Chauhan, S.P., Anfanger, P.J., Neil, R.N., Whitworth, S. and Morrison, J.C. (1998) The accuracy of ultrasound evaluation of amniotic fluid volume in singleton pregnancies: The effect of operator experience and ultrasound interpretative technique. Journal of Clinical Ultrasound, 25, 249-253.

[17]   Salustri, C., Barbate, G. and Porcaro, C. (2005) Fetal Magnetocardiographic Signal Extraction by Signal Subspace: Blind Source Separation. IEEE Transactions on Biomedical Engineering, 52, 1140-1142. doi:10.1109/TBME.2005.846708

[18]   Steer, C.M. and Hertsch, G.J. (1950) Electrical activity of the human uterus in labor: The electrohysterograph. American Journal of Obstetrics & Gynecology, 59, 25- 40.

 
 
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