Gynae BT 2017

Intro

Mission

Concept

Solution

Practice

Different fractionation schedules (EBRT)

Example for a external beam dose (25 x 1.8Gy):

g ·d  / 

BED = n · d 1 +

 /  = 10Gy

g = 1 (EBRT!)

BED = 25· 1.8Gy 1 + = 53.1Gy 10 1.8Gy 10Gy

Normalize the dose in 2Gy per fraction:

BED

53.1Gy

EQD2 =

=

= 44.3Gy

 10

2Gy  / 

2Gy 10Gy

1 +

1 +