1104 / 1674
3D-CRT (FB)
%
3D-CRT (DIBH)
%
IMRT (DIBH)
%
PTV - V95
99.6
99.1
99.2
Ipsilat. non-PTV breast V50
42.7
39.4*
37.2*
Lung – V20
4.1
1.7*
1.4*
Lung - V10
9.2
4.6*
4.0*
Heart – max
8.2
4.8
3.8
Heart – mean
0.5
0.4*
0.5
LAD artery - max
6.1
2.2
1.8
LAD artery – mean
1.9
0.7
0.8
LAD: left anterior descending, * p < 0.05
Results and conclusions
- PTV coverage is acceptable with
all three techniques
-
DIBH
resulted in marked
reduction in normal tissue dose
compared with 3D-CRT (FB)
-
IMRT
showed
further reduction
in dose to OARs compared to 3D-CRT
Moran et al. IJROBP 75:294-301. 2009