Advanced Physics for Brachytherapy 2018
Translating random uncertainties to EQD2:
absorbed dose (Gy) d abs
+
- D d
d
+ D d
-
d
abs
abs
equieffective dose dose (Gy EQD2) d EQD2
+
d
-
d
EQD2
EQD2
> EQD2 dose/fx e.g. n~500 with same prescribed dose and SD 30% / fx: mean of delivered doses > from 500 patients > prescribed dose in EQD2 d abs ……… prescribed dose (Gy) d EQD2 ……. d abs converted to (Gy EQD2) D d ……. … e.g. 30% d abs (Gy) d abs -/+ ……. prescribed dose –/+ D d (Gy) = delivered dose in Gy d EQD2 -/+ …… d abs -/+ converted to Gy EQD2 - = d + - d - < d + – d d - d d – d abs abs abs abs EQD2 EQD2 EQD2 EQD2
Made with FlippingBook - professional solution for displaying marketing and sales documents online