Target Volume Determination 2015

Quantification of organ motion

Organ motion analysis

repeat CT

Analysis of prostate motion and deformation (Deurloo et al IJROBP 2004)

4D CT

4D CBCT

4D MRI

SD (mm)

0-0.25 0.25-0.75 0.75-1.25 1.25-1.75 1.75-2.25 2.25-2.75

local shape variation displayed in color wash on average GTV