Gynae BT 2017

Nodal boosting

• 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>57.5Gy

CTV N2 D98

CTV N1 D98

D98>55Gy

60

62

59

60

58

57

58

56

56

55

54

54

53

52

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51

50

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