Imaging for early stage breast cancer

Comparison of dose to skin (12 patients with 2 CT sets)

D

D

0.1ccm 1ccm BT 3D-CRT BT 3D-CRT

Mean (%)

75

95

61

92

SD (%)

22

4

18

4

In 3D-CRT the dose to skin is independent on the location of the target, and does not have large variations.

In brachytherapy the dose to skin greatly depends on the target location , but it is less than in 3D-CRT.