1699 / 1840
“Aimed” versus “Planned”:
For the example of prostate and considering the published
papers and recommendations, the majority of these refer as
“planned” doses, individual prescription, the achieved D
90
values for the PTV.
Those values are more stable regarding delineation inaccuracies
and resolution of the calculation grid or number of sample
points than the minimum dose values.
Thus we have in general the “aimed” D value for the PTV
90
(institutional/study protocol value) and the “planned” D
90
value,
that is the value that is really achieved (and probably delivered)
in the individual treatment planning process and becomes the
individual dose prescription.