Figure 2 | Scientific Reports

Figure 2

From: EIT monitors valid and robust regional ventilation distribution in pathologic ventilation states in porcine study using differential DualEnergy-CT (ΔDECT)

Figure 2

Example for right-sided ventilation, detected in EIT. Lines: DECT, DECT with EIT overlay, column diagram with EIT-based percentual ventilation of left and right quadrants. First row (A,D,G) shows native DECT with orthotopically positioned tracheal tube, homogeneous EIT signal and almost side-leveled percentual ventilation in EIT signal analysis. After propagation of tracheal tube in right-sided main bronchus, DECT (B) demonstrates left-sided atelectasis and right-sided hyperinflation which exceeds over the center line. Correspondingly, intense EIT signal (E,H) is seen in hyperinflated areas whereas either no or massively reduced signal intensity is detected in atelectasis areas. After restitution to tracheal position, (C), normal EIT signal intensities (F) and ratios (I) are evident again. In every wrong tube position, EIT signal analysis demonstrated significant changes in EIT signal intensity ratios.

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