Figure 1

Aortic measurements by multiplanar reformatting. Multiplane reformatting was used to map diameters of the aorta in a measurement plane that was perpendicular to the direction of blood flow and orthogonal to the aortic wall at the position of measurement. Aortic and extra-aortic anatomical landmarks defined these positions. Here, the positioning of the measurement plane (Plane A) is schematically demonstrated for the aortic sinus in a patient with Turner syndrome and tricuspid aortic valve morphology.