A case example of quantification of flow dynamics in the true and false lumen. (A) Three-dimensional segmentation of a thoracic aorta. (B) Pathline visualization, and slice placement at the cross-section containing the largest aortic diameter perpendicular to the estimated centreline. (C) The flow analysis region of interest is placed separately on the true and false lumen. (D) Forward and backward flow volume is obtained separately through 1 cardiac cycle.