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Solution for IGRT
Technique
Localization
IGRT
Margins
A
CyberKnife
Fiducials
Respiratory motion
tracking; free
breathing
CTV + 5-7 mm
B
Linac with CBCT Liver
contour
CBCT match on liver
contour; free
breathing
ITV + 3 mm
C
Novalis Exactrac Fiducials
Gating using kV
planar images
ITVg + 5-7 mm
D
Linac with CBCT Liver
contour
CBCT match on liver
contour; free
breathing (breath
hold if needed)
ITV + 5-10 mm
E
Linac with CBCT Fiducials
Mid-ventilation;
free breathing
CTV + 10 mm