Table 1 Summary of all relevant patient characteristics: patient -, tumour- and treatment related parameters

Age [years]

52.4

24.3-77.3

Patient weight [kg]

65

44-120

Patient height [cm]

166

150-180

Body-Mass-Index

23.9

17.4-41.8

Breast target volume [cc]

946.9

402-4283

Smoking

n

%

 · no current smoking

146

69.2

 · current smoking

41

19.4

 · unknown

24

11.4

Allergies

 · with allergies

71

33.6

 · without allergies

140

66.4

Tumour characteristics

n

%

Tumour localization

 · right-sided

100

47.4

 · left-sided

110

52.1

 · both sides

1

0.5

Histology

 · ductal-invasive

137

64.9

 · ductal-invasive + DCIS

29

13.7

 · lobular-invasive

15

7.1

 · mixed (ductal- and lobular-invasive)

15

7.1

 · other

15

7.1

T-stage

 · 1

143

67.8

 · 2

64

30.3

 · 3

3

1.4

 · 4

1

0.5

Treatment characteristics 3D-CRT

Median

Range

Interval BCS – start of 3D-CRT [days]

74

19-393

Interval start of 3D-CRT-boost [days]

38

30-79

Energy levels

n

%

 · 6 MV

168

79.6

 · 6 MV/18 MV

39

18.5

 · 6 MV/18 MV/23 MV

4

1.9

Systemic therapy

Chemotherapy

 · no chemotherapy

104

49.3

 · Anthracyclines

59

28.0

 · Taxanes

1

0.5

 · Anthracyclines and taxanes

45

21.3

 · neither anthracyclines nor taxanes

2

1.0

Antihormonal therapy

 · no antihormonal therapy

51

24.2

 · Tamoxifen

111

52.6

 · Aromatase inhibitors

49

23.2

Herceptin

 · no

191

90.5

 · yes

20

9.5