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. 2023 Mar 20;112(10):1394–1416. doi: 10.1007/s00392-023-02182-8

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Fig. 1 — Measurement of diameters of interest on axial CT. AA: ascending aorta; PA: main pulmonary artery; red double headed arrow: distance between bifurcation of the pulmonary trunk and level of measurement within main pulmonary artery