Estimate of Radiation Dose to Anthropomorphic Phantom from CT Component of Hybrid Imaging as Function of Patient Size and Tube Current
| Patient size | 40 mA | 80 mA | 160 mA |
| Newborn | 5.05 | 10.1 | 20.20 |
| 1-y-old | 4.45 | 8.89 | 17.78 |
| 5-y-old | 4.08 | 8.16 | 16.31 |
| 10-y-old | 3.67 | 7.35 | 14.69 |
| Medium adult | 2.55 | 5.10 | 10.19 |
All data were acquired with tube voltage of 120 kVp, rotation speed of 0.8 s, and pitch of 1.5:1. All data were acquired with 160 mA and linearly scaled for the various tube currents shown here (30).