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Table 4 Dosimetric parameters of organ at risk with DIBH-TVMAT vs. FB-TVMAT

From: Dosimetric analysis of tangent-based volumetric modulated arc therapy with deep inspiration breath-hold technique for left breast cancer patients

  

DIBH-TVMAT

FB-TVMAT

p-value

Mean

SD

Mean

SD

Heart

mean dose (Gy)

3.2

2.1

7.9

3.6

< 0.001

D2% (Gy)

12.7

10.0

31.5

12.3

< 0.001

V30Gy (%)

0.4

1.3

3.6

4.5

0.017

V10Gy (%)

4.8

7.0

25.5

14.0

< 0.001

V5Gy (%)

19.4

17.8

51.5

22.4

< 0.001

LAD

Dmax (Gy)

20.1

15.3

40.4

12.3

0.001

D10% (Gy)

17.1

15.0

36.5

13.3

0.001

Left Lung

mean dose (Gy)

6.6

1.9

11.8

2.1

< 0.001

D2% (Gy)

40.1

7.5

48.4

1.8

< 0.001

V30Gy (%)

5.7

3.2

12.9

3.7

< 0.001

V20Gy (%)

9.2

4.3

20.7

4.7

< 0.001

V10Gy (%)

18.7

6.0

37.6

7.2

< 0.001

V5Gy (%)

31.7

7.2

53.6

8.6

< 0.001

Right Lung

mean dose (Gy)

0.7

0.3

1.5

0.6

< 0.001

D2% (Gy)

3.7

1.4

6.8

2.2

< 0.001

V10Gy (%)

0.0

0.1

0.5

0.5

0.002

V5Gy (%)

1.0

1.0

6.7

4.9

< 0.001

Right Breast

mean dose (Gy)

2.0

0.6

3.4

1.3

0.001

D2% (Gy)

7.8

2.7

9.2

3.3

0.232

V10Gy (%)

1.0

1.6

2.5

2.8

0.115

V5Gy (%)

9.1

6.2

24.0

11.3

< 0.001

  1. Legend: Dosimetric parameters of organ at risk (OAR) including heart, left lung, right lung, and breast with tangent-based volumetric modulated arc therapy (TVMAT) under deep inspiration breath-hold (DIBH) technique and free breathing (FB)
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Radiation Oncology

ISSN: 1748-717X

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