Imaging for early stage breast cancer

Target volume dosimetry

WBRT 3D-CRT IBT

p*

p**

(cm 3 )

V

1006,5 172,2

72,3 <0,0001 0,0010

PTV

V

/ V

1

0,18

0,10 <0,0001 0,0015

PTV

breast

D

115 % 106 % -

<0,0001

-

max

V90

98 % 100 % 97 % 0,0324 <0,0001

D90

97 % 98 % 103 % 0,3368 <0,0001

WBRT: whole breast radiotherapy, 3D-CRT: 3D conformal radiotherapy, IBT: interstitial brachyterapy, *WBRT vs. 3D-CRT, **3D-CRT vs. IBT