Molecular Imaging 2017

Question 1: Do the high-uptake areas within the tumor remain at the same location during radiotherapy?

Pre-radiotherapy scan:

Post-radiotherapy scan:

90 %

70 %

80 %

60 %

Overlap fraction

70 %

50%

40 %

Residue

34 %

(> Aortic arch)

GTV

70 %

overlapping area smallest volume

Aerts et al. Int J Radiat Oncol Biol Phys 2008;71:1402-1407

overlap fraction =

50%