CT
I
Window-level setting:
―
lung window for lung
―
soft tissue window for
mediastinum
I
Challenges for RT planning:
―
atelectasis
―
effusion
―
nodal involvement
―
movements
PET
I
Window-level setting:
―
fixed setting necessary
I
Challenges for RT planning:
―
inflammation
―
border (low resolution)
―
movements
CT and PET for GTV
Boellaard
et al.
, Eur J Nucl Med Mol Imaging 2010