Brain Tumours

IGRT with ExacTrac kV stereoscopic image verification system

SETUP MARGIN (mm)

Lateral

Longitudinal

Vertical

1.3 1.0 0.4

Pre- correction

Frame

1.0 4.5 0.6 0.6

1.0 4.0 0.4 0.7

Shell

Post- correction

Frame

Shell

0.4

Comparison of immobilisation techniques

Rosenfelder et al 2013, Clin Oncol 25 (1); 66–73