ASMR

Set-up accuracy: interfraction motion

based on bony anatomy registration

Study

Positioning system

Imaging modality

Position error

2D-2D image registration for verification of set-up

Rosenthal 1995

Dental fixation

Ortogonal radiographs

2.3mm ± 1.6mm

Vogely Bale Hohner head Holder

Sweeny 2001 Kumar 2005 Georg 2006

Portal imaging Portal imaging Portal imaging

1.9mm ± 1.2mm 1.8mm ± 0.8mm 1.3mm ± 0.9mm

Gill-Thomas-Cosman

!

Brain Lab Mask

3D-3D image registration for verification of set-up

Baumert 2005

Stereotactic mast

CT

3.7mm ± 0.8mm

Boda-Heggermann 2006 Guckenberger 2007

Scotch cast mask Scotch cast mask

CBCT CBCT

3.1mm ± 1.5mm 3.0mm ± 1.7mm

Thermoplastic mask & Bite block

Masi 2008

CBCT CBCT

2.9mm ± 1.3mm 3.2mm ± 1.5mm

Bite-block

Courtesy M. Guckenberger, ESTRO IGRT course