| Description |
Single layer |
Thin / low anisotropy ratio |
Thick / high anisotropy ratio |
Thin / high anisotropy ratio |
| Electrodes radius and spacing for penetrating configuration |
250 μm radius, 2 mm spacing |
250 μm radius, 2 mm spacing |
250 μm radius, 2 mm spacing |
250 μm radius, 2 mm spacing |
| Electrodes radius and spacing for endo-epi configuration |
N/A |
3 mm radius, 4 mm spacing |
2 mm radius, 10 mm spacing |
2 mm radius, 3 mm spacing |
| Tissue dimensions |
5 mm radius; 1mm thickness |
5 mm radius; 4 mm thickness |
10 mm radius; 10 mm thickness |
5 mm radius; 3 mm thickness |
| COMSOL grid |
4205 domain tetrahedral elements, 1013 triangular boundary elements (“normal” resolution) |
Penetrating: 966,018 tetrahedral domain elements and 334,532 triangular boundary elements (“fine”); Epi-Endo: 788,547 domain elements and 282,858 boundary elements (“normal”) |
Penetrating: 441,220 domain tetrahedral elements and 156,266 boundary triangular elements (“normal”); Epi-Endo: 828,018 domain elements and 284,970 boundary elements (“normal) |
Penetrating: 84,237 domain tetrahedral elements and 10,500 boundary triangular elements (“fine”); Epi-Endo: 60,102 domain elements and 11,974 boundary elements (“extra fine”) |
| Tissue layers |
1 |
40 |
40 |
3 |
| Tissue fiber helix angle |
Varied (0°, 30°, 60°, and 90°) |
α = −50° (epicardium) to 50° (endocardium), each layer has the increment of 2.56° [18] |
α = −75° (epicardium) to 60° (endocardium), each layer has the increment of 3.38° [19,21,22] |
α = 0°, 45°, 90° [25] |
| Tissue conductivity |
σL = 0.2 S/m, σT,y varied (from 0.02 S/m to 0.2 S/m) |
σL = 0.264 S/m, σT,y = 0.126 S/m, σT,z = 0.217 S/m [20] (low anisotropy), a = 2.10 |
σL = 0.2 S/m, σT,y = 0.02 S/m, σT,z = 0.02 S/m [26] (high anisotropy), a = 10 |
σL = 0.2 S/m, σT,y = 0.02 S/m, σT,z = 0.02 S/m, (high anisotropy), a = 10 |
