TABLE 1.
Summary of mean clinical target volumes and mean numbers of spots and simulated particles for patients with different treatment sites.
| Head and neck | Lung | Prostate | |
|---|---|---|---|
| Clinical target volume (CTV) | 164.1 ± 209.9 cm3 | 302.2 ± 114.3 cm3 | 48.1 ± 23.5 cm3 |
| Numbers of beams | 5a | 3b | 3c |
| Numbers of spots | 2119 ± 1274 | 3036 ± 1554 | 3368 ± 1304 |
| Numbers of simulated particles | 2.03 × 108 ± 9.28 × 107 | 1.43 × 108 ± 2.96× 107 | 1.68 × 108 ± 7.50 × 107 |
| Range uncertainty | 3.5% | 5.0% | 3.5% |
| Positional uncertainty | 3 mm | 5 mm | 5 mm |
a
Median number. For HN treatment, six plans used five beams and the other two plans used four and six beams.
b
Median number. For lung treatment, three plans used three beams and two plans used four beams. The remaining two plans used two and five beams.
c
Median number. For prostate treatment, all plans used three beams.