1174 / 1245
Warsaw 2017
(some) Dose metrics from DVH’s
max
0
) (
1
D
mean
dD
dD
DdV
D
V
D
%50
%98
%
2
D
D
D
HI
ICRU 83
D
98%
‘near minimum’ since D
100%
is highly
sensitive to calculation and accuracy of CTV
D
median
is dose received by 50% of volume
If differential DVH is symmetric and
unimodal for PTV then median and mean
doses are nearly the same
D
2%
‘near maximum’ rather than
previous maximum absorbed dose
Das et al JNCI 2008
D
50
is close to ‘old’ ICRU reference point