Table 1.
Patient characteristics.
Fig 1.
Representative examples of parameter maps.
Color-coded parameter maps shown for day 1 and day 2 as well as for injection 1 (O2) and injection 2 (room air, RA). MTT = mean transit time, PBF = pulmonary blood flow, PBV = pulmonary blood volume.
Fig 2.
Bland-Altman plots for regional reproducibility.
Each lung was divided into 12 regions. Comparisons for injection 1 (O2) vs. injection 2 (room air) combining both days are given in the top row (data points for each day are drawn in different colors for better visualization), and comparisons for day 1 vs. day 2 combining both injections are given in the bottom row (in different colors, analogous to the above). MTT = mean transit time, PBF = pulmonary blood flow, PBV = pulmonary blood volume.
Table 2.
Whole-lung perfusion indices.
Table 3.
Regional heterogeneity.
Fig 3.
Bland-Altman illustrating regional perfusion gradients.
The top row shows the influence of gravity, comparing perfusion parameters averaged over all dorsal regions with ventral regions. The bottom row shows an equivalent comparison of apical and basal regions (the regions in the middle are ignored here).