Electrical capacitance tomography

It is a close relative of electrical impedance tomography[2] and is proposed as a method for industrial process monitoring.

[3] Although usually called tomography, the technique differs from conventional tomographic methods, in which high resolution images are formed of slices of a material.

This means that the technique is limited to producing very low resolution images of approximate slices.

ECT enables the visualization of multiphase flow, which play an important role in the technological processes of the chemical,[5] petrochemical[6] and food[7] industries.

Potentially, ECT may have similar medical applications to electrical impedance tomography, such as monitoring lung function[8] or detecting ischemia or hemorrhage in the brain.

ECT image sequence - An object made of acrylic glass, rotating inside a probe.
Electrical capacitance tomography system [ 1 ] with connected 16-electrode sensor
Dynamic imaging in ECT - On the left, seven cylindrical objects moving along the probe. On the right, a series of probe cross-sectional images.