Cover Imaging for Physicists

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• GTV

40

:

take 40% of SUV

max

as threshold

• GTVbg:

threshold based on mean within GTV

70

and background

• GTV

CT

:

delineation on CT

• GTV

40

is inadequate, but GTV

bg

also differs significantly from GTV

CT

Different methods for tumor delineation on

PET produce very different results

Nestle et al. 2005; J. Nucl. Med. 46:1342-1348

CT

FDG-PET