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IGRT/frameless: Intrafraction motion
•
40 patients (66 brain metastases)
•
Immobilized with Brainlab frameless mask, ExacTrac 6DOF set-up
•
Intrafraction motion:
mean 3D of 0.58 mm (SD: 0.42 mm)
35
-1.5
-1
-0.5
0
0.5
1
1.5
2
Intrafraction motion
Vertical Shift
[mm]
Longitudinal shift
[mm]
Lateral shift
[mm]
Vertical rotation
[°]
Gevaert
et al
, 2012
SBRT 2015 - D. Verellen