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Table 4 Positioning error and corresponding margin for the boost volume in different groups

From: A topology-based method to mitigate the dosimetric uncertainty caused by the positional variation of the boost volume in breast conservative radiotherapy

 

SE (mm)

RE (mm)

Corresponding PTV-H margin (mm)

 

AP

CC

LR

AP

CC

LR

AP

CC

LR

High variation

2.4

3.4

3.4

1.9

2.4

2.0

7.0

10.0

10.0

Low variation

1.4

3.2

1.8

1.2

2.0

1.6

4.0

9.0

6.0

  1. Abbreviations: AP anterior-posterior, CC cranial-caudal, LR left-right, SE systematic error; RE random error