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Table 2 Mean intrinsic set-up deviations for the lateral, longitudinal and vertical directions

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 0.4 [−0.6, 1.4]
Longitudinal (∆ y)
 Supine 0.1 [−0.7, 0.8]
 Prone - 0.3 [−1.3, 0.7]
Vertical (∆ z)
 Supine 0.0 [−1.1, 1.1]
 Prone 0.4 [−1.1, 1.8]
  1. a CI confidence interval