Slide 1

Manchester system – 3 rules

•

Rule 1:

Define treatment in terms of dose to a

point

representative of the

target i.e., uterus, more or less reproducible from patient to patient.

•

Rule 2

: Design

applicators

and their loading to enable the

same dose-rate

to this point ‘A’ regardless of which combination of applicators is used.

•

Rule 3

:Define a set of rules

dictating the relationship, position, and activity

of radium sources in the uterine and vaginal applicators to achieve the

consistent dose rates