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Consider N involvement when:
PET positive
•
Intensity (T2)
•
Diffusion (DWI)
•
Irregular border
•
Lost architecture
•
Round shape
•
Inhomogeneous
Short axis ≥ 10 mm Short axis 5-10 mm And:
CT + T2w MRI
CT + DW MRI
CT + PET
CT
?
Co-registration of modalities
Detection and Delineation of Nodal GTV
Detection
Delineation