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Figure 1 | Journal of Cardiovascular Magnetic Resonance

Figure 1

From: Fiber architecture in remodeled myocardium revealed with a quantitative diffusion CMR tractography framework and histological validation

Figure 1

Representation of fibers in the heart based on their helix angles . The images shown are of a normal human heart. (A) The helix angle (HA) is defined by the inclination of the fiber out of the short axis plane. In the lateral wall of the left ventricle (LV), fibers with a positive HA course towards the antero-apex and those with a negative HA course towards the postero-apex. (B) Fiber tracts in the subendocardium, midmyocardium and subepicardium of the lateral wall are shown. Fibers in the subendocardium have a positive HA, those in the subepicardium have a negative HA, and fibers in the midmyocardium are circumferential. (C) 3D short-axis view (base to apex) of myofiber tracts color-coded by HA. (D) Orthogonal multiplanar view of HA in the left ventricle.

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