Under the alternating electrical excitation, biological tissues produce a complex electrical
impedance which depends on tissue composition, structures, health status, and applied …

Electrical impedance tomography (EIT) is a relatively new imaging method that has evolved
over the past 20 years. It has the potential to be of great value in clinical diagnosis; however …

Bio-electric impedance signatures arise primarily from differences in cellular morphologies
within an organ and can be used to differentiate benign and malignant pathologies …

The overall aim of the European Union Concerted Action on Impedance Tomography (CAIT)
was to enhance and exploit the lead which Europe had in this emerging medical technology …

Multi-frequency electrical impedance tomography (MFEIT) was proposed over 10 years ago
as a potential spectroscopic impedance imaging method. At least seven systems have been …

The Howland current pump is a popular bioelectrical circuit, useful for delivering precise
electrical currents. In applications requiring high precision delivery of alternating current to …

Abstract Electrical Impedance Tomography (EIT) is a tomographic imaging method which
solves an ill posed inverse problem using the boundary voltage-current data collected from …

A new, compact UCLH Mk 2.5 EIT system has been developed and calibrated for EIT
imaging of the head. Improvements include increased input and output impedances …

We describe the development of a multi-frequency electrical impedance tomography (EIT)
system (KHU Mark1) with a single balanced current source and multiple voltmeters. It was …

Multi-frequency electrical impedance tomography (EIT) systems require stable voltage
controlled current generators that will work over a wide frequency range and with a large …