Figure 3. The relative variation in pulmonary vein ostia sizes between the atrial fibrillation (AF) and control heart specimens. The histograms provide the corresponding areas of these ostia. (A): Relative distributions of pulmonary vein sizes of the right pulmonary veins, with means of 24.2 mm2 and 21.6 mm2 and medians of 23.1 mm2 and 19.9 mm2 respectively; (B): Left pulmonary vein areas, with means of 18.7 mm2 and 19.0 mm2 and medians of 18.4 mm2 and 17.7 mm2 respectively. The trend lines depict the two point moving averages of the distributions and illustrate the relative differences between these two heart populations.
