DETECTING ESOPHAGEAL-RELATED CHANGES USING ELECTRICAL-IMPEDANCE TOMOGRAPHY

Preliminary work has been carried out using the Sheffield mark II real time Err system, looking for changes in conductivity which occur in t he stomach and oesophagus following a swallow of a small volume of eit her a conducting or a non-conducting liquid. This has been done using three different configurations: a conventional transverse array placed around the thorax, a rosette array on the abdomen, and a rosette arra y placed on the back. Results show a significant difference between th e two liquids, which can be detected equally well by the three electro de configurations.