Imaging for early stage breast cancer

Comparison of 4 different external beam RT techniques: 3D CRT, IMRT, helical Tomotherapy, proton beam therapy

Average lung receiving 20% of prescribed dose Proton 0.4% IMRT 2.3% 3D CRT 6.0% Tomo 14.2% P<0.001

N=30 patients

Lung

Non-target breast

Target

50% of prescribed dose to non-target breast: Proton mean 16.5 % Tomo mean 22.8% IMRT mean 33.3% 3D CRT mean 40.9% P<0.001

Moon et al, R&O 2009