Target Volume Determination 2016

Respiration correlated FDG-PET/CT

Consequences for GTV delineation:

Stage I / SABR:

―

Delineation on CT of all (8) phases of the respiratory cycle

―

ITV generated on 3D-FDG-PET is NO surrogate!!

A t

ti ll

t d 4D FDG PET

id dditi

l i f

―

u oma ca y segmen e -

may prov e a ona n orma on

Advanced stage:

―

Delineation of target volume on CT of 3 respiratory phases – i.e.,

0%/50%/100% exspiration

―

FDG-PET provides additional information e g Atelectasis

, . .

Troost

et al.

, in preparation