Treatment Technique

HT

3D-6MV

3D-10MV

VMAT-1

VMAT-2

Dosimetric Parameter

Average Value ± StdDev/Gy

Mean dose to lung

3.9 ± 1.9

4.0 ± 1.5

4.0 ± 1.5

4.0 ± 1.5

3.8 ± 1.6

to ipsilateral lung

6.2 ± 2.7

7.4 ± 3.4

7.5 ± 3.3

6.3 ± 2.5

5.7 ± 2.6

to contralateral lung

2.5 ± 2.1

1.4 ± 1.1

1.3 ± 1.0

2.0 ± 1.1

2.0 ± 1.2

Mean dose to heart

3.4 ± 3.3

3.0 ± 2.0

3.0 ± 1.9

2.7 ± 3.0

2.6 ± 2.8

Maximum dose to spinal cord

11.6 ± 6.8

12.8 ± 7.2

12.6 ± 7.0

14.4 ± 5.5

13.6 ± 6.4