Abstract
Recently, the development of miniature size ventricular assistance devices (VAD) has made it easier for the heart patients to get discharged from the hospital and rest at home. However, thrombus formation is a major problem for such prosthetic devices. But, there is no proper mechanism to detect the thrombosis in real-time. Therefore, a 3-D visualization system is studied here to visualize the cross-sectional concentration of red blood cell so as to determine the possible thrombus. The applicability of electrical process tomography technique, which is capable of showing the concentration distribution across the cross-section, has been analyzed. In-vitro experiment was carried out using bovine blood. Thrombus was created by adding calcium chloride to the blood. The experiments showed the change in conductivity distribution when thrombus was passed through the cross-section of interest. The thrombus passing through the channel caused increase in higher electrical resistance in its path. It shows the possibility of developing reliable sensor to detect the thrombus.
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