227 / 1544
l
Analysis of intrafraction motion by taking only
small table rotations:
g
Mean 3D of
0.51mm (SD 0.13mm)
l
Small compared to:
g
Frameless intrafraction motion measured at end of
treatment:
l
Mean 3D of
0.58mm (SD 0.42mm)
l
Comparable to:
g
Invasive framebased fixation:
l
Mean 3D of
0.40mm (SD 0.30mm)
(Ramakrishna
R&O’10)
57
4/10/15
Frameless: immobilization intrafraction