From: A randomized study of the effect of patient positioning on setup reproducibility and dose distribution to organs at risk in radiotherapy of rectal cancer patients
Mean value (mm)
95 % CIa
Lateral (∆ x)
Supine
0.4
[−0.8, 1.6]
Prone
[−0.6, 1.4]
Longitudinal (∆ y)
0.1
[−0.7, 0.8]
- 0.3
[−1.3, 0.7]
Vertical (∆ z)
0.0
[−1.1, 1.1]
[−1.1, 1.8]