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Estimating volumes of intra-abdominal blood using electrical impedance imaging
Conference paper   Open access

Estimating volumes of intra-abdominal blood using electrical impedance imaging

R.J. Sadleir, R.A. Fox, F.J. van Kann and Y. Attikiouzel
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, pp.1750-1751
IEEE
14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Paris, France, 29/10/1992–01/11/1992)
1992
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Abstract

Electrical Impedance Imaging is a non-invasive method of imaging which we intend to apply to the problem of detecting intraabdominal bleeding in Emergency Centre patients. Experiments performed using a cylindrical saline-gel phantom show that as little as 25 ml of free blood within the abdomen may be detected. We also find a strong linear correlation between the total resistivity change created by the anomaly and the volume of the equivalent blood anomaly; thus enabling us to easily quantify the volume of blood perfused into the abdomen over a period of time directly from a reconstructed image. The total resistivity change produced by an anomaly is also observed to be independent of its radial position within the phantom.

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