Table 3.
Normal tissue dose–volume statistics.
| Dose metrics | Coplanar | Non-coplanar | P |
|---|---|---|---|
| Liver mean dose (Gy) | 11.55 ± 12.51 | 10.66 ± 12.27 | 0.07 |
| Rt kidney mean dose (Gy) | 9.14 ± 3.96 | 8.16 ± 3.73 | 0.020 |
| Lt kidney mean dose (Gy) | 12.53 ± 3.37 | 11.74 ± 2.99 | 0.035 |
| Spinal cord max dose (Gy) | 37.59 ± 6.99 | 35.02 ± 5.95 | 0.067 |
| Small intestine max dose (Gy) | 51.59 ± 3.39 | 50.21 ± 3.58 | 0.029 |
| Small intestine mean dose (Gy) | 12.96 ± 7.72 | 12.08 ± 7.07 | 0.051 |
| Small intestine D 2 cc (Gy) | 45.50 ± 7.74 | 43.96 ± 8.82 | 0.035 |
| Small intestine volume >20 Gy (cm3) | 136.14 ± 100.35 | 123.06 ± 86.45 | 0.110 |
| Small intestine volume >40 Gy (cm3) | 31.72 ± 36.92 | 32.95 ± 35.80 | 0.495 |
| Small intestine D 15% (Gy) | 24.44 ± 13.16 | 24.52 ± 13.35 | 0.878 |
| Colon max dose (Gy) | 46.56 ± 8.74 | 46.09 ± 9.47 | 0.327 |
| Colon mean dose (Gy) | 12.93 ± 4.19 | 11.89 ± 3.85 | 0.160 |
| Colon D 2 cc (Gy) | 40.74 ± 8.79 | 40.82 ± 8.89 | 0.875 |
| Colon volume >20 Gy (cm3) | 134.22 ± 80.70 | 123.99 ± 84.93 | 0.499 |
| Colon volume >40 Gy (cm3) | 7.04 ± 6.60 | 11.48 ± 12.04 | 0.108 |
| Colon D 15% (Gy) | 23.08 ± 5.98 | 22.96 ± 6.55 | 0.921 |
| Stomach max dose (Gy) | 48.34 ± 6.45 | 45.40 ± 9.53 | 0.036 |
| Stomach mean dose (Gy) | 14.40 ± 8.55 | 12.72 ± 8.48 | 0.004 |
| Stomach D 15% (Gy) | 28.01 ± 10.42 | 24.86 ± 12.11 | 0.003 |
| Duodenum max dose (Gy) | 45.40 ± 11.71 | 45.55 ± 11.91 | 0.690 |
| Duodenum D 15% (Gy) | 39.31 ± 10.83 | 37.65 ± 12.20 | 0.049 |
| Duodenum mean dose (Gy) | 30.29 ± 13.75 | 29.18 ± 14.37 | 0.062 |