Journal: Frontiers in Veterinary Science

Article Title: Electrical impedance tomography in anaesthetised chickens ( Gallus domesticus )

doi: 10.3389/fvets.2024.1202931

Figure Lengend Snippet: Tomographic images of the coelom at the level of the EIT belt, in various formats. The images are in sequential order from left to right, (A–E) detailing the process of generating a chicken-specific functional EIT image. All images are aligned in the same orientation as labeled in (A) . (A) Computed tomographic (CT) image of the coelom at the level of the EIT belt. (B) Segmentation of the regions of interest (ROI), including the cardiac silhouette, air sacs, lungs, tracheal bifurcation and the body contour, using the software ITK-SNAP. Each of the segmented structures are shaded with its respective colour as indicated in the legend. (C) Model of the coelom using the mean contours of the segmentations from the CT images. The blue outlines the cardiac silhouette, the red outlines the right lung, and the green outlines the left lung. (D) The chicken-specific finite element (FE) model, created using the software Matlab. The red area represents the cardiac silhouette, and the blue represents the lungs. (E) Functional EIT image, after application of the FE model on the raw EIT data, during inspiration in one chicken. The blue represents impedance change, the gray outlines the outer contour, and the white outlines the lungs ROI. No impedance change was noted within the lungs ROI. Impedance signals were noted in the area of the air sacs and cardiac silhouette.

Article Snippet: Analyses of the EIT data were performed using an EIT analytical software (Ibex, Sentec AG, EIT branch, Switzerland).

Techniques: Functional Assay, Labeling, Software