2017_SBRT_Course Book

Is the skull a suitable reference?

• Positioning accuracy (6DOF robotic couch)

4

3.0

3

2.0

y = 1,0256x - 0,005 R² = 0,9997

2

y = 1,0123x + 0,0542 R² = 0,9996

1.0

1

0.0

0

-6

-4

-2

0

2

4

6

-6

-4

-2

0

2

4

6

Waterlevel Portal film

Waterlevel Portal film

-1.0

-1

rotations [°]

rotations [°]

-2

-2.0

-3.0 Average measured lateral

-3

Applied lateral rotations on the CT images [°]

-4 Average measured longitudinal

Applied longitudinal rotations on the CT images [°]

Gevaert et al. Int J Radiat Oncol Biol Phys 2012

33

SBRT 2017 - D. Verellen