2017_IGRT course book
Intra-fractional stability
Intra-fractional uncertainties in frame-less IGRT
Immobilization system
Intrafractional error 3D vector
Study
Imaging modality
1.8mm ± 0.7mm 1.3mm ± 1.4mm
Boda-Heggemann 2006
Thermoplastic masks Scotch cast mask
Cone-beam CT
Thermoplastic mask & Bite block Bite-block
< 1mm < 1mm
Masi 2008
Cone-beam CT
0.5mm ± 0.3mm
Lamda 2009
BrainLab mask
Orthogonal x-rays
0.7mm ± 0.5mm
Ramakrishna 2010
BrainLab mask
Orthogonal x-rays
0.8mm ± 0.4mm 0.8mm ± 0.5mm
Scotch cast mask Thermoplastic masks
Guckenberger
Cone-beam CT
Intra-fractional uncertainties of ~ 1mm need to be considered in non-invasive frame-less IGRT
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