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Table 1 Infra-fraction displacement ≥ 3 mm and 5 mm

From: Intra-fraction displacement of the prostate bed during post-prostatectomy radiotherapy

Direction of Displacement Number of fractions (percentage of all fractions) with intra-fraction displacement  ≥ 3 mm Number of fractions (percentage of all fractions) with intra-fraction displacement  ≥ 5 mm
Any Direction (AP, SI, LR) 82 (20.9%) 14 (3.6%)
Anterior—posterior 39 (9.9%) 8 (2.0%)
Superior—inferior 25 (6.4%) 4 (1.0%)
Left—right 18 (4.6%) 2 (0.5%)
3D displacement 97 (24.7%) 21 (5.4%)
  1. Comparison of the number and percentage of all fractions where intra-fraction displacement was ≥ 3 mm or 5 mm tolerance in each direction and 3D displacement
  2. AP anterior–posterior, SI superior–inferior, LR left–right, 3D 3 dimensional, mm millimetre