EIT Image Reconstruction by Modified Data

EIT Image Reconstruction by Modified Data

Electrical impedance tomography (EIT) is a radiation-free imaging method. Canonically, in lung EIT, 16 electrodes are placed horizontally on the thorax skin. By injecting currents through electrodes attached to the skin, a set of induced voltage measurements can be collected. The conductivity distribution on the chest plane can be obtained from these electrical boundary conditions. It has been ...

Image Reconstruction from Incomplete Data

Image Reconstruction from Incomplete Data

3D EIT image reconstruction with GREIT.

Most applications of thoracic EIT use a single plane of electrodes on the chest from which a transverse image 'slice' is calculated. However, interpretation of EIT images is made difficult by the large region above and below the electrode plane to which EIT is sensitive. Volumetric EIT images using two (or more) electrode planes should help compensate, but are little used currently. The Graz co...

Experimental / clinical evaluation of EIT image reconstruction with l 1 data and image norms

Electrical impedance tomography (EIT) image reconstruction is ill-posed, and the spatial resolution of reconstructed images is low due to the diffuse propagation of current and limited number of independent measurements. Generally, image reconstruction is formulated using a regularized scheme in which `2 norms are preferred for both the data misfit and image prior terms due to computational con...