Fig. 9From: Supine, prone, right and left gravitational effects on human pulmonary circulationThe mean cross-sectional vessel areas, averaged over the heart cycle, are shown for the pulmonary artery (white bars) and the combined superior and inferior pulmonary veins (gray bars) for the right and left lungs in each investigated body position. Error bars represent the standard error of the mean. Abbreviations: LL – left lung. RL – Right lungBack to article page