Authors: Vladimír Sobota, Jan Suchomel
Sobota V, Suchomel J. Monitoring of Pulmonary Embolism using Electrical Impedance Tomography: a Case Study. 4th IEEE International Conference on E-Health and Bioengineering (EHB), 2013.
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Electrical impedance tomography (EIT) offers a non-invasive, radiation free, bedside alternative to conventional medical imaging systems. Studies have shown that monitoring of pulmonary perfusion or detection of pulmonary embolism (PE) could be a future field of use for this technology. This study shows how a commercial EIT system designed for monitoring of pulmonary ventilation distribution can be used for PE detection. In mechanically ventilated animal model with its vital signs monitored, PE was induced artificially six times by blood clots injection. Significant changes in the waveforms of relative impedance were observed four times. The analysis of the EIT data acquired during the whole trial suggests that PulmoVista 500 is capable to detect the resulting impedance changes and roughly localize them. However, the detection of less significant perfusion defects seems to be unreliable and thus require performing of additional studies.
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