Figure 5
From: Effects of ventilation strategy on distribution of lung inflammatory cell activity
Correlation between mean 18F-fluorodeoxyglucose net uptake rate at the voxel level and 18F-fluorodeoxyglucose uptake using the standard deviation. Linear regression between mean (KiP) and standard deviation (SD(KiP)) of voxel-level 18F-fluorodeoxyglucose (18F-FDG) net uptake rate computed using the Patlak method [31] for protective (filled circles) and injurious (open circles) ventilation groups. There was a significant correlation between mean KiP and SD(KiP) for both the protective ventilation group (continuous line; y = 0.48x + 0.001, r = 0.84, P = 0.034) and the injurious ventilation group (dashed line; y = 0.59x + 0.003, r = 0.98, P < 0.001). Note the offset between the two regression lines showing that, for equivalent KiP values, protective ventilation led to lower SD(KiP) than injurious ventilation.