Research Masterclass in Radiotherapy Physics 2017

Results PTV coverage, V 100%

robot

VMAT

%Diff

p-value

PTV

2.0

0.01

95.2

93.3

V100% (%)

Much better tumor coverage with robot

PTV V100%

0.960

 robot: 20/20 V 100%

≥95%

0.940

 VMAT:

0.920

 18/20 V 100%  11/20 V 100%

<95%

VMAT

< 93% clinically unacceptable

0.900

0.880

0.880 0.900 0.920 0.940 0.960

robot

Results Minimum PTV dose and conformity index

robot 1.08 36.1

VMAT

%Diff

p-value <0.001 <0.001

PTV

5.6 7.2

1.15 33.8

CI

D98% (Gy)

PTV CI PTV D98% Higher minimum tumor dose and better CI with robot

1.20

36.5

35.5

1.15

VMAT

VMAT

34.5

33.5

1.10

32.5

31.5

1.05

31.5 32.5 33.5 34.5 35.5 36.5

1.05

1.10

1.15

1.20

robot

robot

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