Electrical impedance tomography (EIT) and its applications

One of the most promising applications of EIT is imaging the heart and lung function of patients.

This video, due to Professor Jennifer Mueller and Dr. Miguel Montoya, shows perfusion. Note how the EIT image is synchronized with the electrocardiography (ECG) signal. The video is based on real data collected from a living person and reconstructed by the nonlinear D-bar method.

As shown by the team of Professor David Isaacson, EIT can be used for detecting breast cancer.

As shown by the team of Professor David Isaacson, EIT can be used for detecting breast cancer.

As shown by the team of Professor David Isaacson, EIT can be used for detecting breast cancer.

In 1998, I served as a guinea pig for the first EIT imaging experiment with electrodes clustered near the heart.

This is one of the first experiments on imaging vocal folds using EIT, performed at Sao Paulo University Hospital. I'm on the left, and Dr. Fernando Moura is seen on the right. Many thanks to Raul Gonzalez Lima and Vivien Schmeling Piccin for organizing the experiment!

Measuring vocal folds with EIT at Professor Jennifer Mueller's Impedance Imaging Laboratory in Colorado.

Electrical Impedance Tomography is useful for non-destructive testing. Here are pictures from the team of Dr. Aku Seppänen. Detected are cracks in concrete.

Electrical Impedance Tomography is useful for non-destructive testing. Here are pictures from the team of Dr. Aku Seppänen. Detected is the penetration of water into concrete. It is amazing how in this study the researchers used a nuclear reactor as a source of neutrons for providing a ground truth measurement!