Imaging for early stage breast cancer

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

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

(Gy)

3.7

3.4

1.9

1.8

mean

Heart

D

(Gy)

2.0

1.0

1.0

0.6

mean

Contralat. breast

D

(Gy)

0.7

0.4

4.6

4.3

max

with vmDIBH technique the heart dose was close to half compared to free breathing

Essers et al. Acta Oncol Early Online:1-7. 2014