TABLE II.
Qualitative spatial resolution data for the GE LightSpeed 16 slice, Elekta XVI, and Varian OBI systems. The uncertainty in each measurement is half of the smallest increment of the measurement scale (in lp/cm).
| GE | OBI | XVI | ||||||
|---|---|---|---|---|---|---|---|---|
| LP (cm) | LP (cm) | LP (cm) | LP (cm) | LP (cm) | LP (cm) | |||
| Protocol | (nominal) | (with ring) | Protocol | (nominal) | (with ring) | Protocol | (nominal) | (with ring) |
| Head | 8 ± 0.5 | 7 ± 0.5 | Head | 8 ± 0.5 | 7 ± 0.5 | Head and Neck S20 | 3 ± 0.5 | 2 ± 0.5 |
| Pelvis | 6 ± 0.5 | 6 ± 0.5 | Pelvis | 6 ± 0.5 | 5 ± 0.5 | Pelvis M20 | 4 ± 0.5 | 3 ± 0.5 |
| … | … | … | Thorax | 6 ± 0.5 | 5 ± 0.5 | Chest M20 | 4 ± 0.5 | 4 ± 0.5 |
| … | … | … | Spotlight | 8 ± 0.5 | 8 ± 0.5 | Prostate Seed S10 | 4 ± 0.5 | 3 ± 0.5 |