2017_IGRT course book

Interfraction volume variation

Interfraction Volume Variation

300

250

200

150

100

50

0

-50

-100

-150

Patient Number

Bladder volume change from planning 1 2 3 4 5

6

7

8

9

10

11

12

13

14

15

No predictive factors

Lalondrelle , IJROBP, 2011