Figure 1
From: Imaging atelectrauma in Ventilator-Induced Lung Injury using 4D X-ray microscopy

CT section of Rabbit-1 acquired in apnea at baseline, immediately after the lavage, and at the end of injurious ventilation, at two different tracheal pressures (5 cmH2O and 25 cmH2O). Note that the experiments were performed with the animals in upright position. Aeration levels are shown for each time step at 25 cmH2O. Non-aerated tissue (red) corresponds to the interval (HU ≥ − 100); poorly aerated tissue (yellow) to (− 500 ≤ HU < − 100); normally aerated tissue (green) to (− 900 ≤ HU < − 500 HU) and hyperinflated tissue (blue) to (HU < − 900 HU). Atelectatic regions develop around lung units which became atelectatic immediately after the lavage.