Table 5.
The 75th percentile of CT dose index (CTDIvol) obtained in this study for each anatomical region compared with the 75th percentile of CTDIvol values reported in other countries
| Country |
Switzerland12,18 |
Ireland9 |
Thailand13 |
Italy20 |
UK21 |
Portugal17 |
Korea16 |
This study |
|---|---|---|---|---|---|---|---|---|
| Year |
2008/2010 |
2010 |
2010 |
2011 |
2011 |
2012 |
2013 |
2014 |
| Number of facilities | 10/179a | 30 | 3 | 65 | 127 | 211 | 32 | 584 |
| Head | ||||||||
| Adults | 65 | 66 | – | 69 | 80 | 75 | 53 | 92 |
| Children (5 years) | 40 | – | 40 | – | 40 | 50 | – | 50 |
| Chest | ||||||||
| Adults | 10 | 9 | – | 15 | 12 | 14 | 13 | 16 |
| Children (5 years) | 10 | – | 10 | – | – | 5.6 | – | 12 |
| Abdomen | ||||||||
| Adults | 15 | 12 | – | 18 | 14 | 18 | 13 | 22 |
| Children (5 years) | 13 | – | 14 | – | – | – | – | 14 |
Values provided in milligrays.
CTDIvol values in the adult chest and abdomen were calculated using a 32-cm phantom, while the others were calculated using a 16-cm phantom.
a
Number of CT scanners.