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Table 3 Modeling Results for Constant and Temperature-Dependent conductivity with Tissue Perfusion

From: Finite Element Analysis of Hepatic Radiofrequency Ablation Probes using Temperature-Dependent Electrical Conductivity

Volts (V) E(P) (V/m) J(P) (A/m3) T(P) (°C) HF(P) (W/m3) σ (P) (S/m) SAR(P) (W/kg) E(R) (V/m) J(R) (A/m3) T(R) (°C) HF(R) (W/m3) σ (R) (S/m) SAR(R) (W/kg)
0.0 0 0 37 0 0.143 0.0 0 0 37 0 0.143 0
2.5 2646 378 37 144 0.143 9.4 × 102 2646 384 37 122 0.145 9.6 × 102
5.0 5291 757 39 436 0.143 3.8 × 103 5281 776 39 476 0.147 3.9 × 103
7.5 7937 1135 40 1012 0.143 8.5 × 103 7901 1203 40 1080 0.152 9.0 × 103
10.0 10583 1513 44 1842 0.143 1.5 × 104 10752 1680 44 1940 0.156 1.7 × 104
12.5 13228 1892 49 2843 0.143 2.4 × 104 13063 2228 49 3073 0.171 2.7 × 104
15.0 15874 2270 54 4142 0.143 3.4 × 104 15590 2877 54 4498 0.185 4.2 × 104
17.5 18519 2648 62 5624 0.143 4.6 × 104 18072 3662 62 6241 0.203 6.2 × 104
20.0 21165 3027 70 7498 0.143 6.0 × 104 20502 4629 71 8333 0.226 9.0 × 104
22.5 23811 3405 78 9505 0.143 7.7 × 104 22874 5844 82 10811 0.255 1.3 × 105
25.0 26456 3783 88 11455 0.143 9.4 × 104 25182 7384 94 13717 0.293 1.8 × 105
27.5 29102 4162 96 14199 0.143 1.1 × 105 27422 9360 104 17103 0.341 2.4 × 105
  1. Modeling results using constant (P) and temperature-dependent (R) conductivity at the point of maximum electrical field (E), current density (J), temperature(T), and heat flux (HF), electrical conductivity (σ) and the specific absorption rate (SAR). This model assumes that the perfusion coefficient is ω = 6.4 × 10-3 1/s.