Study of biaxial mechanical properties of the passive pig heart: material characterisation and categorisation of regional differences

Journal of Materials Science: Materials in Engineering

Table 3 Material parameters (c, b₁, b₂, b₃, b₄, b₅, b₆) of fitted Fung model Eq. (9) on interventricular septum (MDW) of porcine myocardium including model fit (R²) and anisotropy (A) of the same myocardium

	Sample 1 (septum wall)	Sample 2 (septum wall)	Sample 3 (septum wall)	Sample 4 (septum wall)
c (kPa)	1.622	4.036	4.071	1.491
b₁	2.000	1.200	1.236	1.200
b₂	4.114	2.092	2.139	3.081
b₃	1.186	1.064	1.220	1.094
b₄	1.628	0.793	0.110	2.125
b₅	0.197	0.019	0,0001	0.600
b₆	0.598	0.323	0.169	0.001
Anisotropy (A)	0.601	0.717	0.731	0.549
Fit (R²)	0.987	0.989	0.977	0.991