Gynae BT_Lucknow_2018

Nodal boosting

CTV N1 D98

• CTV-N D98>100% of prescribed dose is a hard constraint since the coverage on the edge of PTV-N can be as low as 90% and the margins are small. • Hard target coverage constraints overrules soft constraints e.g. Bowel

D98>55Gy

60

50

40

30

20

10

0

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