Advanced Brachytherapy Physics - Vienna 2016

Terminology

Planning aim dose 

Set of dose and dose/volume constraints for a treatment • 4 x 7 Gy to D 90 to achieve 84 Gy EQD2 to D 90 for CTV HR

in cervix

(EBRT BT) + • 145 Gy to D 90 • 8 x 4 Gy to D 90

for prostate LDR for breast APBI

Prescribed dose = reported dose (input dose for dose-response analysis)  Finally accepted treatment plan (which is assumed to be delivered to an individual patient) Delivered dose = dose that produces observable effect (input effect for dose response analysis)  Actually delivered dose to the individual patient

From ICRU 89

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