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Table 1 Dosimetric endpoints for IMRT, PSPT, and IMPT plans including average values, standard deviation, and range

From: An in-silico comparison of proton beam and IMRT for postoperative radiotherapy in completely resected stage IIIA non-small cell lung cancer

 

Parameter (%)

IMRT

PSPT

IMPT

Average

SD

Minimum

Maximum

Average

SD

Minimum

Maximum

Average

SD

Minimum

Maximum

Total lung

V5

46.2

6.9

37.4

58.8

35.6

11.5

16.7

57.2

26.9

6.6

17.4

36.6

 

V10

33.8

7.2

21.2

43.5

30.9

10.2

13.8

49.0

21.2

5.1

12.9

28.9

 

V20

22.0

5.9

9.1

29.4

22.6

7.6

10.1

36.2

14.4

3.7

7.5

19.8

 

V30

12.3

3.9

3.9

16.1

15.0

4.4

6.7

21.4

9.1

2.3

3.9

12.3

 

Mean (cGy)

1083.0

212.8

686.0

1370.5

1003.6

306.8

475.1

1484.1

667.5

160.5

372.2

907.6

Contralateral lung

V5

36.7

11.8

24.8

65.8

25.9

14.0

7.3

52.6

17.3

11.1

4.0

42.5

 

V10

24.2

13.3

9.7

56.9

21.7

13.0

5.0

47.4

13.0

9.6

2.5

36.2

 

V20

14.8

10.8

1.6

41.1

14.6

10.9

2.4

37.0

8.5

7.9

1.1

28.6

 

V30

7.6

8.5

0.3

30.4

8.8

7.7

1.0

28.0

5.5

6.1

0.3

21.7

 

Mean (cGy)

813.1

434.1

404.8

1935.7

673.8

459.3

140.5

1707.0

428.2

351.8

72.7

1313.0

Ipsilateral lung

V5

67.0

13.5

45.0

89.1

57.9

19.3

18.1

84.9

49.5

15.1

11.6

64.5

 

V10

55.9

13.0

33.0

76.4

52.7

17.9

15.5

76.2

41.6

13.6

8.7

55.3

 

V20

40.5

13.9

14.5

58.5

42.5

14.7

10.4

56.6

30.8

11.2

5.2

41.5

 

V30

26.8

11.8

3.7

44.5

31.8

11.6

6.7

43.6

21.6

8.8

3.2

32.9

 

Mean (cGy)

1827.5

481.3

902.1

2482.6

1869.9

631.4

485.8

2504.0

1390.3

471.6

270.0

1869.9

Spinal cord

Dmax (cGy)

4018.9

482.5

2777.0

4480.5

3435.9

1096.5

1057.6

4699.6

1354.9

721.9

374.6

2530.6

 

D1 (cGy)

3281.8

1348.7

80.1

4155.0

2413.4

1182.0

257.0

4364.0

817.6

163.0

515.4

1686.0

Heart

V40

7.9

7.0

0.1

23.4

10.8

6.0

1.2

19.0

5.2

4.6

0.2

14.5

 

Mean (cGy)

1019.8

477.4

264.7

1954.0

1063.0

399.2

368.1

1462.0

688.9

316.7

76.3

1101.5

Esophagus

V40

51.5

11.6

30.0

73.7

55.3

10.4

38.6

74.5

50.3

12.4

32.0

74.4

 

Mean (cGy)

2854.3

616.6

1878.2

4184.2

2985.8

575.9

2074.7

4056.0

2764.3

598.6

1888.3

3997.0

Body

Dmax (cGy)

5662.3

82.0

5495.7

5753.2

5688.2

171.7

5237.3

5878.6

5635.2

139.1

5410.9

5805.7

  1. Abbreviations: Dmax maximal dose received, D1 dose received by 1% (of the spinal cord).