ABSTRACT
Practical phantom studies are essential to test, assess and calibrate an EIT system. Medical EIT systems are always prescribed to thoroughly study with practical phantoms to test and calibrate the systems for estimating the system accuracy and ensuring the medical safety. As the multiple inhomogeneity imaging is very important to characterize the multiple tumor in human subject or to image the multiple object geometries in several applications in non-medical fields. In this direction multiple inhomogeneity phantoms are developed and studied with an EIT system. The boundary potentials are collected with a LabVIEW based EIT (LV-EIT) system by injecting a 1 mA 50 kHz constant amplitude sinusoidal current to the multiple inhomogeneity phantoms and the resistivity images are reconstructed in EIDORS. Experimental results demonstrate that the LV-EIT system successfully reconstructs the double, triple and quadruple inhomogeneity configurations. The object position, object geometry and the background profile all are properly reconstructed for all the multiple inhomogeneity phantoms.
