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Table 3 Dose constraints employed during the planning process

From: Incidental dose distribution to locoregional lymph nodes of breast cancer patients undergoing adjuvant radiotherapy with tomotherapy - is it time to adjust current contouring guidelines to the radiation technique?

 

TT (mean dose in Gy, ±SD)

3DCRT (mean dose in Gy, ±SD)

3DCRT-DIBH (mean dose in Gy, ±SD)

Level I

 Dmean

31.6 (± 13.5)

24.0 (± 10.1)

24.6 (± 10.5)

 Dmedian

33.3 (± 15.4)

21.5 (± 15.7)

23.8 (± 15.6)

 V45

30.0 (± 20.8)

36.8 (± 16.3)

35.4 (± 23.2)

 V40

43.2 (± 25.7)

44.5 (± 19.0)

43.4 (± 25.6)

 V25

68.8 (± 32.7)

54.3 (± 21.5)

52.0 (± 27.2)

Level II

 Dmean

8.4 (±7.3)

11.2 (± 9.7)

13.3 (± 5.6)

 Dmedian

7.4 (±7.6)

7.3 (± 12.3)

10.5 (± 12.0)

 V45

0 (± 0)

8.7 (± 11.3)

14.8 (± 25.7)

 V40

0.4 (± 1.5)

16.7 (± 16.1)

24.0 (± 28.5)

 V25

8.7 (± 15.4)

25.6 (± 22.7)

32.6 (± 31.7)

Level III

 Dmean

2.4 (± 2.6)

4.0 (± 6.1)

5.6 (± 6.9)

 Dmedian

1.6 (± 1.5)

2.7 (± 5.6)

3.6 (± 6.7)

 V45

0 (± 0)

1.5 (± 4.2)

9.2 (± 24.7)

 V40

0.0 (± 0.1)

3.5 (±7.6)

12.6 (± 25.8)

 V25

1.0 (± 3.2)

7.2 (± 13.3)

16.7 (± 28.4)

ILMLN

 Dmean

27.9 (± 8.0)

13.5 (± 10.8)

18.7 (± 8.0)

 Dmedian

29.6 (± 9.1)

19.0 (± 16.1)

12.4 (± 14.2)

 V45

9.3 (± 15.2)

7.4 (± 13.4)

12.0 (± 16.8)

 V40

19.8 (±22.7)

13.2 (±20.4)

21.1 (± 24.8)

 V25

59.1 (± 28.7)

22.7 (± 26.2)

33.6 (± 30.6)

Heart left sided RT

 Dmean

3.8 (± 1.2)

2.8 (± 1.7)

1.1 (± 0.4)

 V30

0.1 (± 0.2)

2.9 (± 2.7)

0.2 (± 0.4)

 V20

0.4 (±0.7)

3.9 (± 3.8)

0.3 (± 0.6)

Lung (ipsilateral)

 Dmean

9.1 (± 1.5)

7.7 (± 1.8)

6.8 (± 1.6)

 V30

6.9 (± 2.4)

11.9 (± 3.3)

10.0 (± 2.9)

 lV20

12.6 (± 3.7)

14.3 (± 4.0)

12.0 (± 3.3)

  1. TT Tomotherapy, 3DCRT conventional tangentially arranged fields, 3DCRT-DIBH breathing gated conventional tangentially arranged fields