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Figure 5 | Journal of Cardiovascular Magnetic Resonance

Figure 5

From: Vortex flow during early and late left ventricular filling in normal subjects: quantitative characterization using retrospectively-gated 4D flow cardiovascular magnetic resonance and three-dimensional vortex core analysis

Figure 5

Streamline superimposed on vortex cores. Sample Streamline visualization of cross-sectional view of LV flow during peak early filling (a) peak late filling (b) showing pair of counter-rotating vortices. Streamlines are color coded (blue to red) based on velocity magnitude. Same frames were superimposed with 3D vortex ring cores identified using Lambda2-method and showing good overlap between the 3D Lambda2-detected vortex cores and the cores of corresponding 2D streamlines’ counter-rotating vortices during both peak early (c) and peak late filling (d). Lambda2 isovalue threshold T λ 2 =3μ was used to define the isosurfaces of vortex ring cores (with μ as the λ2 average of voxels with λ2 < 0).

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