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Scanning parameters and radiation dose of traditional scan mode (Group A) and high-pitch scan mode (Group B)
| Group A | Group B | P value | |
|---|---|---|---|
| Body mass index (kg/m2) |
24.3 ± 3.4 |
24.9 ± 2.7 |
0.95 |
| Scan length (mm) |
607.2 ± 37.9 |
610.1 ± 40.1 |
0.71 |
| Scan time (s) |
7.8 ± 0.9 |
1.6 ± 0.1 |
< 0.001 |
| CTDIvol (mGy) |
4.0 ± 0.8 |
2.7 ± 0.5 |
< 0.001 |
| ED (mSv) | 3.9 ± 0.9 | 2.7 ± 0.6 | < 0.001 |
CTDIvol, volume CT dose index; ED, effective dose.
