Exploring the limits of contactless electrical conductivity imaging

Contactless electrical conductivity imaging (CECI) is a new medical imaging modality that uses magnetic field measurements from magnetic excitations. Due to strong attenuation of magnetic fields with distance, the major challenge of CECI is imaging deep voxels. In this study, the vertical line spread, and, vertical line separation functions of the CECI are assessed to explore this phenomenon. It is found that CECI can produce low resolution images up to a depth of 3 cm. The modality appears to be a promising tool to provide conductivity images of the brain.