PowerPoint Presentation

Bladder

Rect

GTV

Sigmoid

3D-based Dose Volume

Parameters for OAR

2 cm

0.1 cm

CLASSICAL MAX DOSE

in 2D:

in 3D a voxel is no clinical relevant endpoint

FIXED VOLUME

: tolerance dose (total dose)-

“minimum dose to the most exposed tissue”*

GYN GEC ESTRO Recommendations(II)

Radiother Oncol 2006

1cc/2cc:teleangiectasia

(20 mm x 20 mm x 5 mm)

0.1 cc: 3D“maximum dose“:

ulceration(fistula)