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CT parameters
| Philips Brilliance* | Siemens SOMATOM Sensation† | |
| Collimation | 64×0.625 mm | 64×0.6 mm |
| Tube voltage | 120 kV | 120 kV |
| Pitch | 1.2 | 1.4 |
| Reference mAs | 40 mAs | 32 mAs |
| Slice thickness | 0.9 mm | 1.0 mm |
| Rotation time | 0.4 s | 0.5 s |
| Dose modulation | z-axis | CARE Dose 4D‡ |
*Brilliance, Philips Medical Systems, Best, The Netherlands.
†SOMATOM Sensation, Siemens Medical Solutions, Munich, Germany.
‡CARE dose 4D incorporates x–y and z-axis modulation.
