Figure 6
From: CT-derived 3D-diaphragm motion in emphysema and IPF compared to normal subjects
Definition of dorsoventral-transverse displacement angle. Displacement angle was defined by the angle (θ) between dorsoventral-transverse displacement vectors (xy-plane) and dorsal–ventral axis (y-axis), neglecting apico-basal changes. We defined ventral-dorsal direction as zero degrees and the angle is increasing from the inside to the outside. The figure shows the diaphragm viewed from below. Multiple arrows are displacement vectors. The color of the arrows represents displacement angles (θ, Displayed in the color-bar on the right side of the figure).
