Figure 1From: Intraindividual validation of 4D flow measurement against 2D flow measurements in aortas with bicuspid or tricuspid valves by cardiovascular magnetic resonance (CMR)Linear regression correlation. Net flow values (ml) in the ascending aorta of both techniques by the two observers are plotted on both X-axis and Y-axis. The X-axis represents the four-dimensional (4D) method of flow analysis while the Y-axis represents the two-dimensional (2D) method of flow analysis in all four graphs. Graph A, and C represent Health volunteers, B and D represent patients with bicuspid aortic valve (BAV). A line of identity (dashed) y=x is added. The regression line (solid) indicates the offset between the two methods.Back to article page