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. 2017 Mar 1;193(5):351–366. doi: 10.1007/s00066-017-1106-0

Table B.1.

Literature values of relevant dielectric [71, 74], acoustic [72, 74], and thermal properties [74] of muscle and fat

US RF/microwave Physical
2–8 MHz 13.56 MHz 27 MHz 433 MHz 915 MHz
Muscle εr [−] 138 95.9 56.87 55.00
σ [S/m] 0.628 0.654 0.81 0.95
α/f [dB/cm/MHz] 1.1
c [m/s] 1588.4
ρ[kg/m3] 1090
cp [J/kg/K] 3421
k [W/m/K] 0.49
Fat εr [−] 25.4 18 11.6 11.3
σ [S/m] 0.055 0.06 0.08 0.11
α/f [dB/cm/MHz] 0.6
c [m/s] 1440.2
ρ[kg/m3] 911
cp [J/kg/K] 2348
k [W/m/K] 0.21

Where ε r [−] is relative dielectric constant, σ [S/m] is electric conductivity, α/f [dB/cm/MHz] is attenuation per frequency, c [m/s] speed of sound, ρ [kg/m3] is material density, c p is specific heat capacity [J/kg/K], k is thermal conductivity [W/m/K]