Imaging for early stage breast cancer

Dose and volume parameters used for quantitative evaluation

100

90

80

70

V10 = 60 %

60

50

40

30

V20 = 27 %

20 Relative volume (%)

10

0

0 20 40 60 80 100 120 140 160 180 200

Relative dose (%)

D10 = 49 %

Vx = relative volume in % irradiated by x dose Dy = relative dose which is delivered to volume of y

Both x and y can be relative or absolute volume Example: V100, V150, D90, D98, D2, D 1cm 3