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Table 6 Set-up margins calculated from the results of CBCT-ST

From: The potential failure risk of the cone-beam computed tomography-based planning target volume margin definition for prostate image-guided radiotherapy based on a prospective single-institutional hybrid analysis

(/mm)

non-compensated

compensated

 

AP

SI

LR

AP

SI

LR

Σ

0.35

0.33

0.22

1.10

1.31

0.58

σ

0.85

0.80

0.44

1.91

2.18

1.07

PTV margin

1.5

1.4

0.9

4.1

4.8

2.2

  1. PTV planning target volume, kV kilo voltage, CBCT cone-beam computed tomography, AP anterior to posterior, SI superior to inferior, LR left to right