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Fig. 2 | BMC Medical Imaging

Fig. 2

From: Counter-clockwise vortical blood flow in the main pulmonary artery in a patient with patent ductus arteriosus with pulmonary arterial hypertension: a cardiac magnetic resonance imaging case report

Fig. 2

Vortical blood flow in the main pulmonary artery. Velocity-color-encoded streamlines (a, b, c) and 3D velocity vectors (d, e, f) projected onto multi-planar reformatted anatomical images demonstrate counter-clockwise rotating vortical blood flow nested in bi-directional pulmonary flow caused by PDA. This structure is present throughout the entire cardiac cycle (Additional file 2: in the online-only Data Supplement)

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