Table 6.
Number of CT examinations (NCT) and effective dose due to CT (ECT) in various countries
| Country | NCT /1000 population | % of total number of X-ray examinations | ECT/caput (mSv) | % of total effective dose | Reference |
|---|---|---|---|---|---|
| Switzerland (2008) |
100 |
6 |
0.8 |
68 |
This work |
| France (2007)* |
115 |
10 |
0.8 |
65 |
[7] |
| Germany (2008) |
132 |
8 |
1.0 |
60 |
[8] |
| United Kingdom (2008) |
53 |
7 |
0.3 |
67 |
[9] |
| The Netherlands (2008) |
62 |
11 |
0.4 |
46 |
[10] |
| Norway (2008)** |
194 |
29 |
0.9 |
80 |
[11] |
| Finland (2008) |
60 |
8.3 |
0.3 |
58 |
[12] |
| USA (2006) |
226 |
18 |
1.5 |
66 |
[13] |
| UNSCEAR (1997–2007) | 129 | 8 | 0.9 | 47 | [1] |
* Therapeutic interventional procedures excluded.
** Dental radiology is excluded in the total frequency.