Figure 8.

(a) Original fiber direction with frontal and back view: the two images from the left are the epicardial fiber orientation; the middle two images are the middle layer fiber orientation; the two images from the right are the subendocardial fiber orientation. (b) Ventricular fiber orientation, with θ the inclination angle and ϕ the transverse angle. The first row is the constructed fiber orientation of our model, the second row is the published human ventricular DTMRI data, and the third row was the data extracted from [55]. (c) Constructed fiber orientation of the cross sections of the ventricle. The numbers represent the position of cross sections in the whole heart model.