Supine

Prone

p-value

CTV1 volume (cm³)

39 ± 12.0 (21.7 - 50.6)

40.0 ± 12.8 (21.7 - 53.4)

n.s

PTV1 volume (cm³)

128.3 ± 23.9 (94.2 - 148.9)

134.2 ± 31.1 (87.9 - 164)

n.s

CTV2 volume (cm³)

27.1 ± 11.1 (13.0 - 40.2)

25.6 ± 10.3 (15.4 - 41.7)

n.s

PTV2 volume (cm³)

82.74 ± 23.6 (51.9 - 106.3)

79.5 ± 21.0 (56.8 - 109.9)

n.s

Rectal volume (cm³)

38.7 ± 20.3 (21.4 - 71.6)

43.5 ± 19.5 (21.3 - 68.6)

n.s

Bladder volume (cm³)

236.0 ± 107.7 (138.2 - 398.6)

257.9 ± 111.3 (152.5 - 425.9)

0.003