Fig. 3From: Reliability, repeatability, and reproducibility of pulmonary transit time assessment by contrast enhanced echocardiographyBland-Altman analysis. The X-axis represents the mean of the average pulmonary transit time (PTT) in the two time moments measured by physicians and technicians. The Y-axis represents the difference of the average PTTs in the two time moments between the physicians and technicians. The solid line is the mean difference (bias); dotted lines are limits of agreement [bias ± (1.96 SD)]Back to article page