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Table 2 Characteristics of the online adapted plans

From: Dosimetric benefit of MR-guided online adaptive radiotherapy in different tumor entities: liver, lung, abdominal lymph nodes, pancreas and prostate

 

Liver

Lung

Lymph nodes

Pancreas

Prostate

Adapted fractions (%)

93.3

84.4

82.1

92.0

69.4

Mean BOT (min)

7.1

9.1

4.5

6.2

1.9

Min. BOT (min)

4.9

4.5

2.5

3.2

1.1

Max. BOT (min)

11.3

17.7

9.4

9.3

4.4

Mean number of beams

12

10

16

15

14

Min. number of beams

9

8

9

13

9

Max. number of beams

16

15

19

17

21

Mean number of segments

33

26

72

70

54

Min. number of segments

13

9

12

46

33

Max. number of segments

54

40

100

95

129

Mean MU

4269.2

5439.9

2652.2

3688.4

1139.4

Min. MU

2950.3

2675.2

444.3

1906.7

649.0

Max. MU

6776.0

10,612.0

5607.9

5547.1

2624.5

Mean VPTV (cm3)

38.4

15.2

65.5

251.1

114.7

Min. VPTV (cm3)

7.3

3.9

1.9

59.6

67.9

Max. VPTV (cm3)

109.9

32.0

291.3

455.8

192.6

  1. BOT = beam-on time, MU = number of monitor units, VPTV = volume of the PTV