TVD 2016

Prescribing

• For serial organs, maximum (near‐max) dose is relevant  parameter ICRU recommends D  2 %   rather than D Max  (D  0 %  ) O bl f d fi i (k i !) h l f vercomes pro em o e n ng now ng w at vo ume o  the structure is important

Note that D 2 %

not validated (yet); caution given !

But it is logical  …    However, effect will depend on total volume of structure

In gynae brachtherapy often use D 2 cm 3