Table 4 Median CTDIvol (mGy) per scanner for the different CT regions. P75 and P25 DRL levels of the nationwide survey as reference. *Separate protocols for the thorax and abdomen with different CTDIvol
CT- head | CT-abdomen-pelvis | CT- thorax | CT-pulmonary embolism | CT-lumbar spine | CT-thorax-abdomen | CT-cervical spine | |
|---|---|---|---|---|---|---|---|
CT1 | 25.2 | 10.8 | 5.3 | 12.4 | 12.5 | 11.1 | |
CT2 | 25.6 | 9.6 | 6.6 | 10.3 | 17.5 | 12.3 | 11.4 |
CT3 | 53.6 | 9.0 | 4.2 | 11.0 | 28.6 | 6.4 | 30.5 |
CT4 | 20.5 | 4.3 | 3.0 | 2.3 | 12.1 | 6.1 | |
CT5 | 18.4 | 4.0 | 3.1 | 13.7 | * | 6.6 | |
DRL P75 | 58.0 | 13.0 | 10.0 | 20.0 | 32.0 | 13.0 | 32.0 |
DRL P25 | 38.0 | 7.0 | 5.0 | 6.5 | 17.5 | 6.5 | 15.0 |