Table 6 Estimated effective doses per scan and examination for each anatomical location in Japan, and comparison with previous studies.
CT examination | Â | Effective dose for one scanning/one examination (mSv) | ||||
|---|---|---|---|---|---|---|
| Â | 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 |
| Â | Examination | 2.6 | 2.4 | 2.8 | 1.5 | - |
Face | Scan | 1.5 | - | 0.8 | - | - |
| Â | Examination | 2.0 | - | 0.8 | - | - |
Neck | Scan | 2.3 | - | - | - | - |
| Â | Examination | 2.6 | - | - | - | - |
Chest | Scan | 5.4 | - | 5.5 | 3.4* | 3.8 |
| Â | Examination | 9.6 | 9.1 | 5.7 | 5.8 | - |
Upper abdomen | Scan | 5.7 | - | 5.5 | 3.8* | 7.2 |
| Â | Examination | 8.1 | 12.9 | 11.5 | 5.3 | 10.2** |
Lower abdomen | Scan | 8.3 | - | 6.3 | - | - |
| Â | Examination | 10.3 | 10.5 | 7.2 | - | - |