Table 5. Radiation dose for both study groups based on the CT scanner used for imaging.
| 16-row CT | 64-row CT | 16- and 64-row CT | |||||||
|---|---|---|---|---|---|---|---|---|---|
| water group (n = 21) | mannitol group (n = 27) | p | water group (n = 71) | mannitol group (n = 61) | p | water group (n = 92) | mannitol group (n = 88) | p | |
| BMI [kg/m2] | 27.1 (24.4–29.7) | 24.2 (21.7–26.7) | 0.112 | 26.4 (25.1–27.6) | 26.4 (24.9–27.8) | 0.900 | 26.5 (24.4–27.6) | 25.7 (24.4–27.0) | 0.330 |
| CTDI | |||||||||
| absolute [mGy] | 14.7 (13.6–15.9) | 12.9 (11.6–14.1) | 0.048 | 11.4 (10.4–12.4) | 11.5 (10.0–12.9) | 0.553 | 12.2 (11.3–13.0) | 11.9 (10.8–13.0) | 0.494 |
| normalized [mGy*m2*kg-1] |
0.54 (0.52–0.57) | 0.63 (0.38–0.90) | 0.344 | 0.43 (0.40–0.45) | 0.42 (0.38–0.46) | 0.478 | 0.46 (0.43–0.48) | 0.49 (0.41–0.57) | 0.942 |
Mean Body mass index (BMI) of the subgroups. Computed tomography dose index (CTDI) as absolute values and normalized (CTDI divided by BMI). Data is presented as mean with upper and lower confidence intervals in parenthesis.