Figure 4
From: Pulmonary artery stiffness assessed by velocity-encoding MRI: comparison of techniques
Bland-Altman plots of inter-observer (up) and intra-observer (down) variabilities for the transit-time (left) and flow-area (right) methods for estimating PWV. The data shows low variabilities as all measurement differences lie with the +/- 2SD limit. The flow-area method shows larger variabilities (larger difference standard deviations) than the transit-time method.