Table 4.
Mean dose statistics for each technique, categorised into coplanar and non‐coplanar and mean values for all coplanar and non‐coplanar techniques combined with associated P‐values
| PTV54Gy (%) | PTV48.6Gy (%) | Mean lung dose (Gy) | R50% (Deviation) | D2 cm (Deviation) | CI | |
|---|---|---|---|---|---|---|
| Coplanar | ||||||
| 7 Fields | 95.2 | 99.48 | 3.91 | 1.22 | 3.12 | 0.79 |
| 9 Fields | 95.12 | 99.59 | 4.12 | 1.05 | 1.16 | 0.80 |
| 13 Fields | 95.09 | 99.63 | 4.26 | 0.91 | −0.86 | 0.82 |
| Non‐coplanar | ||||||
| 7 Fields | 95.07 | 99.58 | 4.10 | 0.79 | 2.06 | 0.80 |
| 9 Fields | 95.12 | 99.57 | 4.13 | 0.71 | 0.70 | 0.81 |
| 10 Fields | 95.6 | 99.58 | 4.38 | 0.35 | −0.76 | 0.81 |
| Mean values | ||||||
| All coplanar | 95.14 | 99.57 | 4.01 | 1.10 | 1.14 | 0.80 |
| All non‐coplanar | 95.26 | 99.58 | 4.12 | 0.62 | 0.66 | 0.80 |
| P‐value | 0.47 | 0.87 | 0.09 | <0.0001 | 0.19 | 0.71 |
PTV54Gy, percentage of the PTV receiving 54 Gy; PTV48.6Gy, percentage of the PTV receiving 48.6 Gy; D2cm, dose at any point 2 cm from the PTV; R50%, ratio of the volume of half the prescription dose to the volume of the PTV; CI, conformity index.