Table 8. Radiation exposure stratified according to gender and BMI-high pitch helical acquisition only.
| Variables | Female (n=34) | Male (n=47) | P value |
|---|---|---|---|
| Effective dose (mSv), median (IQR) | |||
| Overall | 1.9 (1.2-3.4) | 3.0 (1.5-4.9) | 0.063 |
| BMI <25 | 1.4 (1.0-2.0) | 1.2 (0.9-2.7) | 0.931 |
| BMI 25-29.9 | 1.6 (1.0-3.0) | 3.6 (1.6-5.4) | 0.034 |
| BMI 30-34.9 | 2.9 (2.4-4.7) | 4.0 (3.0-7.0) | 0.165 |
| BMI ≥35 | 7.3 (5.4-9.1) | 5.1 (4.8-5.3) | 0.083 |
| CTDIvol (mGy), median (IQR) | |||
| Overall | 4.5 (2.6-6.3) | 5.7 (2.8-10.2) | 0.174 |
| BMI <25 | 2.5 (1.5-4.9) | 2.4 (2.2-3.0) | 0.977 |
| BMI 25-29.9 | 4.1 (2.7-5.5) | 5.7 (3.1-13.6) | 0.161 |
| BMI 30-34.9 | 9.2 (5.9-15.5) | 7.3 (6.9-10.1) | 0.758 |
| BMI ≥35 | 9.3 (6.5-15.7) | 8.8 (7.4-10.1) | 1 |
IQR, interquartile range; BMI, body mass index (kg/m2); CTDIvol, CT dose index volume.