SBRT2015

IGRT/frameless: Intrafraction motion

Immobilization system

Imaging modality Intrafractional error 3D vector

Study

Boda- Heggemann 2006

1.8mm ± 0.7mm 1.3mm ± 1.4mm

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

Ramakrishna 2010 Guckenberger 2010

0.7mm ± 0.5mm

BrainLab mask

Orthogonal x-rays

0.8mm ± 0.4mm 0.8mm ± 0.5mm

Scotch cast mask Thermoplastic masks

Cone-beam CT

36

SBRT 2015 - D. Verellen