1. A method to simplify information obtained through electrical impedance tomography, the method comprising: collecting electrical impedance tomography (EIT) data through operation of an electrical impedance tomography apparatus on a body; processing the EIT data to detect one or more specific condition, trend, or event; and defining at least one region of interest from the EIT data, the at least one region of interest comprising a set of two or more pixels having in common a certain condition, event or trend detected from the EIT data.