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Table 4 Systematic errors, random errors and margins calculated for each axis (in mm)

From: A comparison of two systems of patient immobilization for prostate radiotherapy

  

Systematic error

Random error

Margin calculated

AP

Alpha cradle

0.42

1.0

1.8

Hipfix

0.58

1.2

2.3

CC

Alpha cradle

0.48

1.2

2.1

Hipfix

2.13

4.2

8.3

ML

Alpha cradle

0.92

1.5

3.4

 

Hipfix

0.44

1.1

1.9