1181 / 1840
The usefulness of organ or organ-wall contouring
in the small-volume-part of the graphs,
the curves tend to come very close together
25
30
35
40
in cm3
0
5
10
15
20
10
20
30
40
50
60
70
80
90
100
bladder
bladder
wall
relative dose
volume
D2
bext
=
D2
bw
D5
bw
D10
bw
D5
bext
D10
bext
Pat #5
30
35
40
in cm3
Cut off
-volume
0
5
10
15
20
25
10
20
30
40
50
60
70
80
90
100
rectum
rectum
wall
D2
rext
~
D2
rw
D5
rext
D5
rw
D10
rext
D10
rw
volume
relative dose
Fig.1
(Wachter-Gerstner et al. R&O 2003
)
2-3 cc