Table 1.

Tissues from ICRU report 44 [12] and 46 [13]

ICRU tissues	Physical density ρ (g.cm3)	Zeff	ρZeff
Lung inflated	0.26	7.88	2.05
Adipose	0.95	6.67	6.34
Yellow marrow	0.98	6.56	6.43
Average soft tissue adult female	1.02	7.44	7.59
Red marrow	1.03	7.44	7.66
Water	1.00	7.73	7.73
Average soft tissue adult male	1.03	7.60	7.83
GI tract	1.03	7.71	7.94
Pancreas	1.04	7.70	8.01
Breast	1.02	7.88	8.04
Eyes lens	1.07	7.54	8.07
Lymph	1.03	7.84	8.07
Testis	1.04	7.82	8.13
Brain	1.04	7.88	8.19
Urinary bladder filled	1.03	7.98	8.22
Kidney	1.05	7.84	8.23
Ovary	1.05	7.84	8.24
Muscle	1.05	7.85	8.24
Lung deflated	1.05	7.88	8.27
Skin	1.09	7.63	8.31
Liver	1.06	7.87	8.34
Spleen	1.06	7.87	8.34
Heart	1.06	7.95	8.43
Blood	1.06	7.97	8.45
Cartillage	1.10	8.33	9.16
Thyroid	1.05	9.19	9.65
Spongiosa	1.18	10.74	12.68
Sacrum	1.29	11.46	14.79
Femur	1.33	12.09	16.08
Humerus	1.46	12.61	18.41
Cranium	1.61	13.13	21.14
Mandible	1.68	13.33	22.40
Cortical bone 5 year Child	1.75	13.56	23.72
Cortical bone	1.92	13.98	26.84