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 |