Advanced Physics for Brachytherapy 2018

Inverse Optimisation and Planning

Desired Dose Distribution:

“Desired” Dose Distribution

Define Dose Window for Target(s), NT & OAR(s)

Objectives

Dose - Volume – Pairs D V for GTVs, CTV/PTV, OARs

100%

▲

Dose – Window

D

V = 0% => D

= D

prescription

max

H

V = 100% => D

= D

Volume

min

L

▼

0%

The Desired Dose Distribution for the Inverse Planning - Optimisation Process is then defined as {D V }, and/or {V D } desired/aim value sets, the Objectives .

0

Dose

Max (High)

Min (Low)