Prone | Supine | ||||
---|---|---|---|---|---|
mean (cc) | SD (cc) | mean (cc) | SD (cc) | P valuea | |
Small intestine | |||||
PTV | 1.5 | 5.5 | 7.9 | 15.7 | 0.036† |
PTV + 0.5 cm | 2.6 | 8.9 | 12.1 | 22.6 | 0.035† |
PTV + 1 cm | 3.5 | 11.4 | 17.1 | 29.8 | 0.035† |
PTV + 2 cm | 5.6 | 14.5 | 26.8 | 46.9 | 0.035† |
PTV + 3 cm | 9.0 | 17.4 | 36.5 | 63.2 | 0.021† |
PTV + 4 cm | 16.5 | 22.6 | 48.8 | 77.3 | 0.16 |
Rectum | |||||
PTV | 10.9 | 4.2 | 12.4 | 4.4 | 0.064 |
PTV + 0.5 cm | 25.2 | 7.4 | 29.2 | 8.0 | 0.0093† |
PTV + 1 cm | 38.6 | 10.6 | 44.7 | 11.1 | 0.0056† |
PTV + 2 cm | 60.3 | 17.2 | 67.4 | 20.4 | 0.064 |
PTV + 3 cm | 71.2 | 21.4 | 76.5 | 27.6 | 0.38 |
PTV + 4 cm | 74.5 | 22.3 | 80.1 | 32.1 | 0.61 |
Bilateral femursb | |||||
PTV | 0.0 | 0.0 | 0.0 | 0.0 | |
PTV + 0.5 cm | 0.1 | 0.3 | 0.1 | 0.2 | 0.34 |
PTV + 1 cm | 1.6 | 1.9 | 1.1 | 1.6 | 0.12 |
PTV + 2 cm | 14.5 | 9.1 | 11.9 | 8.7 | 0.0093† |
PTV + 3 cm | 42.4 | 14.8 | 37.5 | 15.3 | 0.0021† |
PTV + 4 cm | 77.0 | 16.3 | 71.2 | 17.8 | 0.0039† |
Bladder | |||||
PTV | 62.7 | 18.7 | 78.4 | 22.4 | 0.0021† |
PTV + 0.5 cm | 87.9 | 24.0 | 102.9 | 25.3 | 0.0032† |
PTV + 1 cm | 110.2 | 30.2 | 122.8 | 28.2 | 0.0032† |
PTV + 2 cm | 147.7 | 45.3 | 153.2 | 40.1 | 0.017† |
PTV + 3 cm | 176.5 | 62.2 | 174.8 | 56.5 | 0.064 |
PTV + 4 cm | 197.3 | 78.9 | 190.1 | 72.8 | 0.089 |
Sigmoid colon | |||||
PTV | 1.5 | 2.0 | 2.6 | 4.3 | 0.12 |
PTV + 0.5 cm | 4.1 | 5.4 | 5.9 | 8.5 | 0.26 |
PTV + 1 cm | 7.1 | 8.9 | 9.6 | 12.6 | 0.12 |
PTV + 2 cm | 16.1 | 15.7 | 20.2 | 19.6 | 0.27 |
PTV + 3 cm | 28.6 | 20.6 | 33.4 | 24.1 | 0.59 |
PTV + 4 cm | 42.9 | 25.1 | 45.6 | 28.5 | 0.71 |