Table 7.5. Composition And Properties Of Simulated Brain, Fat, And Bone Tissue At Microwave Frequencies (Guy, 1971a)


COMPOSITION

SimulatedTX-150Polyethelene PowderH20HaCl
Brain7.01%
29.80%
62.61%0.52823%
Laminac 4100Aluminum PowderAcetylene BlackP-102
Fat and bone85.20%
14.5%
0.24%0.375%


ELECTRICAL PROPERTIES

Frequency (MHz)Relative PermittivityConductivity (S/m)Loss Tangent
Brain
915
34.37
0.7300.442
2450
33.56
1.2660.2713
Fat and bone
915
5.61
0.06650.233
2450
4.51
0.1720.187


PHYSICAL PROPERTIES

Specific HeatSpecific Density
Brain
0.83
0.96
Fat and bone0.29 - 0.37
1.29 - 1.38