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Table 1
CT scanning parameters of two protocols for three age groups.
| Group age (years) | Protocol | CT protocol parameters | ||||
|---|---|---|---|---|---|---|
| Tube potential (kVp) | Tube current (mAs) | Slice thickness (mm) | Nominal beam width (mm) | pitch | ||
| <5 | RC-CT | 80, 110 | 52.8 ± 12.9 | 5 | 16 × 1.2 | 1.25–1.5 |
| CD-CT | 80, 110 | 27.8 ± 9.7 | 5 | 16 × 1.2 | 1.25–1.5 | |
| 5–<10 | RC-CT | 110, 130 | 59.7 ± 10.5 | 5 | 16 × 1.2 | 1–1.5 |
| CD-CT | 110, 130 | 31.4 ± 11.1 | 5 | 16 × 1.2 | 1–1.5 | |
| 10–15 | RC-CT | 110, 130 | 67.8 ± 14.7 | 5 | 16 × 1.2 | 1–1.5 |
| CD-CT | 110, 130 | 35.7 ± 13.5 | 5 | 16 × 1.2 | 1–1.5 | |
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