Fig. 1From: Age dependence of pulmonary artery blood flow measured by 4D flow cardiovascular magnetic resonance: results of a population-based studyPositioning of analysis planes. a Analysis planes in the MPA, LPA, and RPA were positioned with a distance of 1 cm distal to the MPA bifurcation. b The AAo plane was located in a standardized fashion on a level with the lower edge of the RPA. c 4D flow quantification was performed in all four analysis planesBack to article page