Table 3

Estimated annual number of CT examinations and collective dose in Japan.

CT examination

Annual number of CT examination (*106)

Annual collective dose

(*103 Sv person)


Head

Total

9.1

23.6

Men

4.6

12.1

Women

4.5

11.5

Face

Total

1.4

2.8

Men

0.7

1.5

Women

0.7

1.3

Neck

Total

10.1

26.5

Men

5.6

14.8

Women

4.5

11.7

Chest

Total

12.5

120.0

Men

7.0

67.8

Women

5.5

52.2

Upper abdomen

Total

10.3

83.1

Men

5.7

47.1

Women

4.6

36.0

Lower abdomen

Total

2.1

21.3

Men

1.1

12.0

Women

1.0

9.3


Total

Total

45.4

277.4

Men

24.7

155.3

Women

20.8

122.1


Tsushima et al. BMC Medical Imaging 2010 10:24   doi:10.1186/1471-2342-10-24

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