Radiofrequency Radiation Dosimetry Handbook - Fourth Edition
Table 4.7. Real Part of the Complex-Dielectric Constant
(Relative Permittivity) Of Various Body Tissues
(Letters designate footnotes for Table 4.7)
Frequency
(MHz)

Muscle
Heart
Muscle

Liver

Lung*

Spleen

Kidney

Brain
Fatty Tissue
Bone
Bone
Marrow
Whole
Blood

Skin
10-5 2.5 x 106s <7 x 106a <1.6 x 107a <8 x 106a --- --- --- --- --- --- --- ---
< 1 x 107a
10-4 8 x 105a (8-8.2) x 105a (8.5-9) x 105a 4.5 x 105a --- --- --- 1.5 x 105a --- --- --- ---
106s
10-3 1.3 x 105a (3-3.2) x 105a 1.5 x 104a 9 x 104a --- --- --- 5 x 104a --- --- 2.9 x 103d ---
1.7 x 105s
1.0 x 105f
10-2 (5-6) x 104a 1 x 105a (5-6) x 104a 3 x 104a --- --- --- 2 x 104a --- --- 2.81 x 103d
9 x 104s
5 x 104f
10-1 3 x 104s --- 7x103-1.2x104g --- --- 1.2 x 104ee 3 x 103ee --- --- --- 2.74 x 103d ---
2 x 104f
1 2 x 103f --- 1.2 x 103-2 x 103g --- --- 2.5 x 103ee 870ee --- --- --- 2.04 x 103d ---
10 179ee --- 320ee --- --- 465ee 240ee --- --- --- 200d ---
25 103-115t --- 136-138t --- >200t >200t >160t --- --- --- --- ---
50 85-97t --- 88-93t --- 135-140t 119-132t 110-114t 11-13t --- 6.8-7.7t --- ---
1 x 102 69-73c --- 65-75k --- 88-90c 83-84c 70-75c 8-13k --- 6.8-7.7v 72-74c ---
71-76m --- 72-74c --- 100-101m 87-92m 81-83m 11-13m 73-76m
2 x 102 56t 59-63t 50-56t 35t --- 62t --- 4.5-7.5t --- --- --- ---
3 x 102 55-57y 55-62y 48-56y 35t --- 57-60y --- --- --- --- 63y ---
4 x 102 52-54t 52-56t 44-51t 35t --- 53-55t --- 4-7t --- --- 64y ---
54-56y 54-58y 46-53y 36y 55-57y
6 x 102 55-56y 54-58y 46-53y 36y --- 54-56y --- --- --- --- 62y ---
7 x 102 52-53t 50-55t 42-51t 34t --- 50-53t --- --- --- --- 62y
55-56y 53-58y 46-54y 35y 53-56y
9 x 102 53-55y 53-57y 44-52y 35y --- 53-56y --- 3.2-6y --- --- 63y ---
1 x 103 49-52n 53-57o 46-47n 35o --- 53-56o --- 4.3-7.5n 8n 4.3-7.8n 58-62 ---
53-55o 44-52o 3.2-6o 63o
61p 50p 9.5p
1.77 x 103 --- --- --- --- --- --- --- --- --- --- 59.2z ---
56.8aa
56.2bb
1.78 x 103 51x --- --- --- --- --- --- 9.7x 8.4x --- --- 45.6x
2.98 x 103 51x --- --- --- --- --- --- 8.43x 8.35x --- --- 44.5x
2.99 x 103 --- --- --- --- --- --- --- --- --- --- 59.9z ---
57.7aa
56.0bb
3 x 103 45-58t --- 42-43t --- --- --- 32dd 3.9-7.2t --- 4.2-5.8t --- ---
3.59 x 103 48.25x --- --- --- --- --- --- 7.90x 8.3x --- --- 44.25x
4.63 x 103 47.33x --- --- -- -- --- --- 6.56x 7.83x --- --- 41.53x
8.5 x 103 40-42t --- 34-38t --- --- --- --- 3.5-4.5t --- 4.4-5.4t --- ---
9.39 x 103 --- --- --- --- --- --- --- --- --- --- 42.4z ---
45.5aa
47.8bb
9.43 x 103 --- --- --- --- --- --- --- 4.5w 7.6w --- 45w 35.5w
1 x 104 40-42n --- 34-38n --- --- --- --- 3.5-3.9n 8.0n 4.4-6.6n 50-52n ---
29q 3.6q 6.6q 5.8q 45q
45cc 5.7cc 48r
2.362 x 104 --- --- --- --- --- --- --- 3.4w 6.3w --- 32w 23w
2.377 x 104 --- --- --- --- --- --- --- --- --- --- 25.0aa ---
30.2bb
* Partially or totally deflated, except material described in Footnote a (Schwan, 1956b).
a Dog, material in situ at body temperature (Schwan, 1956b, 1957, 1963a)
b Sheep, material at 18ºC (Schwan, 1956b, 1963a)
c Beef and pork, excised material at 20ºC (Schwan, 1956b, 1963a).
d Rabbit, at room temperature (Schwan, 1956b, 1963a).
e Rabbit, excised material at 37ºC (Schwan, 1956b, 1963a).
f Rabbit, excised piece at room temperature Schwan, 1956b, 1963a)
g Man and various animals, excised pieces and minced material at 23ºC (Schwan, 1956b, 19634).
h Sheep, 18ºC (Schwan, 1956b, 1963a).
i Man, minced material at 23ºC (Schwan, 1956b, 1963a).
j Rabbit, minced material at 23ºC (Schwan, 1956b, 1963a).
k Man, minced material at 37ºC (Schwan, 1956b, 1963a).
l Sheep, at 20ºC (Schwan, 1956b, 1963a).
m Beef and pork, excised material at 37ºC (Schwan, 1956b, 1957, 1963a).
n Dog and horse, blood and excised tissues measured at 38ºC, except bone and bone marrow at
25ºC (Schwan, 1956b, 1957, 1963a; Schwan and Piersol, 1954).
o Man, excised piece at 27ºC (Schwan, 1956b, 1963a).
p Beef, minced material at 22ºC (Schwan, 1956b, 1963a).
q Man, excised piece at 37ºC (Schwan, 1956b, 1963a).
r Man, excised material at 35ºC (Schwan, 1956b, 1963a).
s Frog, excised piece at 25ºC (Schwan, 1956b, 1963a).
r Various body tissues at 37ºC (Schwan, 1957; Schwan and Piersol, 1954; Schwan and Li, 1953).
u Human tissues at 37ºC (Rajewski, 1938).
v Animal tissues at 37ºC (Rajewski, 1938).
w Human tissues, taken from surgical operations, at 37ºC (England, 1950).
x Human tissues at 37ºC (Cook, 1952).
y Human autopsy, material of normal composition at 27ºC (Schwan and Li, 1953).
z Human blood containing average cells in concentration 4.9 x 10^6 per mm³ , at 15ºC (Cook, 1951).

aa Human blood containing average cells in concentration 4.9 x 10^6 per mm³, at 25ºC (Cook, 1951).
bb Human blood containing average cells in concentration 4.9 x 10^6 per mm³ at 35ºC (Cook, 1951)
cc Biological material (Swicord et al., 1976).
dd Human brain at 37ºC (Schwan, 1957).
ee Animal tissues at 37ºC (Stoy et al., 1982).