2017_IGRT course book
Pulmonary SBRT
Do we need patient immobilization?
LR (mm)
SI (mm)
AP (mm)
Immobilization
Yes
1.3
1.1
1.3
Σ
No
1.2
1.2
1.8
Yes
1.4
1.4
1.6
σ
No
1.3
1.5
1.8
Guckenberger 2007 Sonke 2009
Intra-fractional changes of the tumor position seen in CB-CT images after treatment Assuming gross motion in 1% of the fractions: ➢ Limited relevance in conventionally fractionation (blurring)
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