Table 6 Comparison between protocols of hospitals and modified margins
From: A comparison of two systems of patient immobilization for prostate radiotherapy
Immobilization device | Protocol of hospitals | Modified margins for each axis (mm) | ||
|---|---|---|---|---|
AP | CC | ML | ||
Whole body alpha-cradle | 0.5 to 1Â cm (1Â cm margin is usually used except 0.6Â cm posteriorly) | 7.8 | 8 | 3.9 |
Thermoplastic Hipfix system | 1Â cm (0.5Â cm for posterior margin) | 8.3 | 14.2 | 2.4 |