1240 / 1578
/
Dahele IJROBP 2011
CT imaging:
• Slice thickness 1- 2mm
MRI imaging:
• T1 with and w/o Gadolinium contrast
• T2
• Slice thickness ≤ 3mm or volumetric image acquisition
CT
MRI T1
MRI T2
ESTRO SBRT 2017 - Matthias Guckenberger
21
Imaging for target and OAR definition
07.09.17
/
• Rather large inter-observer variability
Ø
Automatic image registration between CT and MRI images
not reliable
Ø
Manual adjustment / correction of image registration
Average differences between 5 institutions (mm)
X-axis
Y-axis
Z-axis
Average
1.1
0.8
1.3
Range between 5 institutions (mm)
Average
2.4
1.8
3.0
CT & MRI image registration
ESTRO SBRT 2017 - Matthias Guckenberger
22
Toussaint Radiat Oncol 2016
07.09.17