Table 6

Estimated effective doses per scan and examination for each anatomical location in Japan, and comparison with previous studies.

CT examination

Effective dose for one scanning/one examination (mSv)


Year

Study

2008

Current (Japan)

2000

Japan (13)

2002

Germany (15)

2003

UK (16)

2003-2004

Netherlands (14)


Head

Scan

2.5

-

2.2

0.8*

1.9

Examination

2.6

2.4

2.8

1.5

-

Face

Scan

1.5

-

0.8

-

-

Examination

2.0

-

0.8

-

-

Neck

Scan

2.3

-

-

-

-

Examination

2.6

-

-

-

-

Chest

Scan

5.4

-

5.5

3.4*

3.8

Examination

9.6

9.1

5.7

5.8

-

Upper abdomen

Scan

5.7

-

5.5

3.8*

7.2

Examination

8.1

12.9

11.5

5.3

10.2**

Lower abdomen

Scan

8.3

-

6.3

-

-

Examination

10.3

10.5

7.2

-

-


-: no data.

*: Effective doses for one examination were divided by the number of scanning of the routine sequences.

**: Sum of the effective doses of arterial and portal scans.

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

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