766 / 1228
As an analytical solution for Ψ cannot be (always) obtained we consider
the
Inverse Problem
to determine Ψ for a desired D equivalent to
determine:
(a) the position and number of catheters
(b) the position and number of source dwell positions (SDPs) or
sources
(c) the source dwell times
such that the obtained dose distribution D
is as close as possible to the
desired one
.
This process is called
Inverse Optimisation
or
Inverse Planning
.
Introduction on Dose Optimisation
{Ψ}
{D} : D = Ψ. A