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. 2014 Jan 27;9(1):e86638. doi: 10.1371/journal.pone.0086638

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© 2014 Shi et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Linear regression plots of estimated V_T values by EIT versus VRI (solid line represents the line of best fit; dashed line shows the identity line) with the corresponding Bland-Altman plots, displaying differences of VRI and EIT V_T measurements versus the average (solid line shows the bias; dashed line the limits of agreement). Panel A: Analysis 1 for ventral and dorsal lung regions of interest (ROI). Panel B: Analysis 2 for right and left ROI. Panel C: Analysis 3 for level 1 (upper ventral), level 2 (middle), and level 3 (lower dorsal) ROIs.