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Essers et al. Acta Oncol Early Online:1-7. 2014
Breath-hold and volumetric radiation therapy (VMAT)
3D-CRT and VMAT plans for 21 patients on CTs acquired in free-breathing (FB)
and/or in voluntary moderately deep inspiration breath-hold (vmDIBH), D=38.5 Gy
VMAT improves conformity
and delivers lower doses to ipsilateral breast and lung compared to 3D-CRT
vmDIBH
technique results in a
further reduction of ipsilateral lung and heart dose
VMAT increases the contralateral breast dose
3D-CRT
FB
3D-CRT
vmDIBH
VMAT
FB
VMAT
vmDIBH
PTV
V95% 96.4
96.1
98.9
99.1
PTV
CI
1.52
1.47
1.25
1.23
Ipsilat. non-PTV breast
V50% 23.2
23.0
19.7
18.0
Ipsilat. lung
D
mean
(Gy)
3.7
3.4
1.9
1.8
Heart
D
mean
(Gy)
2.0
1.0
1.0
0.6
Contralat. breast
D
max
(Gy)
0.7
0.4
4.6
4.3