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Terminology
Planning aim dose
➢
Set of dose and dose/volume constraints for a
treatment
• 4 x 7 Gy to D90 to achieve 84 Gy EQD2 to D90 for HR
CTV in cervix (EBRT+BT)
• 145 Gy to D90 for prostate LDR
• 8 x 4 Gy to D90 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
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From ICRU 89