Biological modelling of the radiation dose escalation effect of regional hyperthermia in cervical cancer

Radiation Oncology

Table 1 Dielectric and thermal tissue properties used in hyperthermia treatment planning

Tissue type	Conductivity σ	Relative permittivity ε_r	Density ρ	Perfusion W _b	Conductivity k	Capacity c
	[S m^-1]		[kg m^-3]	[kg m^-3 s^-1]	[W m^-1 K^-1]	[J kg^-1 K^-1]
Air	0	1	1.29	0	0.024	10,000^a
Bone	0.05	10	1595	0.12	0.65	1420
Muscle	0.75	75	1050	3.6	0.56	3639
Fat	0.06	10	888	1.1	0.217	2387
Cervical tumor	0.74	65	1050	1.8	0.56	3639

^aThe value of c used for air was tenfold increased to accelerate thermal computations. This has a negligible effect on the steady-state temperature (<2 × 10⁻⁵ °C)

ISSN: 1748-717X