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Table 1 Comparison of the plan results for the phantom.

From: Two-step intensity modulated arc therapy (2-step IMAT) with segment weight and width optimization

 

Plan 1

Plan 2

Plan 3

Plan 4

D PTV, max (%)

165.9

113.4

108.4

110.7

D PTV, min (%)

76.1

97.6

97.6

97.4

V 107, PTV (%)

90.6

20.7

3.3

12.3

HI

2.18

1.16

1.11

1.14

D OAR, max (%)

44.6

52.2

47.5

47.8