Tissue/organ

Dose coefficient hT (10−8 Sv·Bq−1)

Our method

ICRP

238U

232Th

238U

232Th

Stomach

2.7 ± 0.2

3.8 ± 0.3

2.6

3.7

Small intestine

2.8 ± 0.2

4 ± 0.3

2.7

3.8

Upper large Intestine

3.9 ± 0.3

5 ± 0.3

3.9

5.1

Lower large Intestine

6.8 ± 0.4

7.8 ± 0.5

6.9

8.0

Liver

8.9 ± 0.6

18 ± 1

9.6

18

Kidneys

26 ± 2

18 ± 2

25

18

Bone surfaces

68 ± 4

1274 ± 92

71

1200

Red marrow

----

44 ± 4

----

46

Testes

----

10 ± 1

----

10

Ovaries

----

11 ± 1

----

10

Bladder

2.3 ± 0.2

3.7 ± 0.2

2.25

3.6