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Table 1 Target volume dose parameters

From: Whole breast and regional nodal irradiation in prone versus supine position in left sided breast cancer

Target Volumes

 

Axilla prone

Axilla supine

Significance

Partial axilla prone

Partial axilla supine

Significance

CTV_WBI

 

Volume (ml)

420 ± 165

477 ± 174

P < 0.05

420 ± 165

477 ± 174

P < 0.05

 

Dmean (Gy)

40.26 ± 0.09

40.34 ± 0.12

-

40.20 ± 0.10

40.27 ± 0.33

-

 

D02 (Gy)

42.12 ± 0.38

43.12 ± 0.80

-

42.16 ± 0.44

42.80 ± 0.35

P < 0.05

 

D05 (Gy)

41.74 ± 0.29

42.40 ± 0.49

-

41.72 ± 0.24

42.43 ± 0.41

P < 0.05

 

D50 (Gy)

40.21 ± 0.10

40.24 ± 0.16

-

40.03 ± 0.06

40.31 ± 0.41

-

 

D95 (Gy)

38.98 ± 0.16

38.63 ± 0.45

-

39.13 ± 0.24

38.00 ± 0.18

P < 0.05

 

D98 (Gy)

38.47 ± 0.24

38.01 ± 0.58

P < 0.05

38.72 ± 0.41

37.45 ± 0.23

P < 0.05

 

Heterogeneity

0.09 ± 0.01

0.13 ± 0.03

-

0.09 ± 0.02

0.13 ± 0.01

P < 0.05

PTV_WBI

 

Volume (ml)

483 ± 176

560 ± 204

P < 0.05

483 ± 176

560 ± 204

P < 0.05

 

Dmean

40.23 ± 0.09

40.19 ± 0.06

-

40.23 ± 0.07

40.15 ± 0.16

-

 

D02

42.26 ± 0.42

43.06 ± 0.75

-

42.34 ± 0.51

42.86 ± 0.19

-

 

D05

41.85 ± 0.32

42.34 ± 0.46

-

41.90 ± 0.30

42.46 ± 0.30

P < 0.05

 

D50

40.21 ± 0.10

40.18 ± 0.10

-

40.05 ± 0.02

40.19 ± 0.25

-

 

D95

38.76 ± 0.23

38.20 ± 0.50

P < 0.05

39.02 ± 0.31

37.68 ± 0.25

P < 0.05

 

D98

37.91 ± 0.48

36.54 ± 0.96

P < 0.05

38.45 ± 0.62

37.02 ± 0.30

P < 0.05

 

Heterogeneity

0.11 ± 0.02

0.16 ± 0.03

P < 0.05

0.10 ± 0.02

0.15 ± 0.01

P < 0.05

CTV_LNI

 

Volume (ml)

114 ± 31

89 ± 19

P < 0.05

51 ± 18

28 ± 3

P < 0.05

 

Dmean

40.30 ± 0.32

40.28 ± 0.13

-

40.12 ± 0.17

40.26 ± 0.15

-

 

D02

42.57 ± 0.55

42.94 ± 0.73

-

42.39 ± 0.34

42.32 ± 0.60

-

 

D05

42.09 ± 0.58

42.42 ± 0.55

-

41.99 ± 0.29

42.01 ± 0.19

-

 

D50

40.40 ± 0.27

40.23 ± 0.15

-

40.16 ± 0.13

40.33 ± 0.13

-

 

D95

38.42 ± 0.27

38.45 ± 0.28

-

37.99 ± 0.63

38.26 ± 0.36

-

 

D98

36.11 ± 2.07

37.47 ± 0.57

-

36.72 ± 1.22

37.54 ± 0.48

-

 

Heterogeneity

0.16 ± 0.05

0.14 ± 0.02

-

0.14 ± 0.03

0.12 ± 0.02

-

PTV_LNI

 

Volume (ml)

192 ± 51

152 ± 30

P < 0.05

82 ± 34

51 ± 6

-

 

Dmean

40.01 ± 0.35

40.07 ± 0.17

-

39.84 ± 0.31

40.04 ± 0.10

-

 

D02

42.55 ± 0.56

42.87 ± 0.62

-

42.31 ± 0.37

42.32 ± 0.31

-

 

D05

42.08 ± 0.56

42.27 ± 0.41

-

41.89 ± 0.32

41.96 ± 0.22

-

 

D50

40.27 ± 0.19

40.11 ± 0.15

P < 0.05

40.03 ± 0.10

40.15 ± 0.10

-

 

D95

37.02 ± 1.47

37.81 ± 0.32

-

36.86 ± 1.43

37.67 ± 0.22

-

 

D98

33.12 ± 4.25

36.11 ± 1.24

P < 0.05

34.40 ± 2.42

36.69 ± 0.39

-

 

Heterogeneity

0.23 ± 0.10

0.17 ± 0.03

-

0.20 ± 0.06

0.14 ± 0.01

-

PTV_LNI_opt

 

Volume (ml)

177 ± 50

134 ± 31

P < 0.05

75 ± 32

50 ± 6

-

 

Dmean

40.15 ± 0.24

40.11 ± 0.14

-

40.07 ± 0.13

40.06 ± 0.11

-

 

D02

42.53 ± 0.54

42.88 ± 0.65

-

42.33 ± 0.35

42.32 ± 0.31

-

 

D05

42.06 ± 0.55

42.32 ± 0.47

-

41.93 ± 0.30

41.97 ± 0.22

-

 

D50

40.29 ± 0.17

40.13 ± 0.13

P < 0.05

40.12 ± 0.09

40.16 ± 0.11

-

 

D95

38.18 ± 0.26

37.90 ± 0.31

-

38.10 ± 0.47

37.76 ± 0.19

-

 

D98

34.86 ± 2.90

36.32 ± 1.18

-

36.46 ± 0.73

36.78 ± 0.38

-

 

Heterogeneity

0.19 ± 0.07

0.16 ± 0.03

-

0.15 ± 0.02

0.14 ± 0.01

-

  1. Data are presented as group average ± standard deviation