14
Results
PTV coverage, V
100%
PTV
robot
VMAT
%Diff
p-value
V100% (%)
95.2
93.3
2.0
0.01
0.880
0.900
0.920
0.940
0.960
0.880 0.900 0.920 0.940 0.960
VMAT
robot
PTV V100%
robot: 20/20 V
100%
≥95%
VMAT:
18/20 V
100%
<95%
11/20 V
100%
< 93%
clinically unacceptable
Much better tumor coverage with robot
Results
Minimum PTV dose and conformity index
PTV
robot
VMAT
%Diff
p-value
CI
1.08
1.15
5.6
<0.001
D98% (Gy)
36.1
33.8
7.2
<0.001
1.05
1.10
1.15
1.20
1.05
1.10
1.15
1.20
VMAT
robot
PTV CI
31.5
32.5
33.5
34.5
35.5
36.5
31.5 32.5 33.5 34.5 35.5 36.5
VMAT
robot
PTV D98%
Higher minimum tumor dose and better CI with robot