Molecular Imaging 2017

PET based GTV-contouring

Size: GTV

< GTV

< GTV

≅ GTV

40

bg

2.5

vis

p=0.0004

significant differences, correlation with - SUV max - size of lesion - FDG-inhomogeneity mean difference (radius 2.5/40): 0.9 cm

p=0.0002

180

120

GTV 2.5 165 ml

GTV vis 158 ml

60

GTV bg 95 ml

GTV 40 54 ml

0

mean volume (ml)

p<0.0001

4

p<0.0001

3

GTV

40

GTV

bg

2

GTV 2.5 3.1 cm

GTV vis 3.0 cm

GTV bg 2.5 cm

GTV 40 2.2 cm

Nestle JNM 200

1

0

mean radius (cm)