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Table 2 Dosimetric parameters of PTV for whole and partial arc plans on the Trilogy and Halcyon

From: Treatment planning comparison of volumetric modulated arc therapy with the trilogy and the Halcyon for bilateral breast cancer

PTV

T-4arc

T-8arc

H-4arc

H-8arc

P < 0.05

Dmean(Gy)

51.8 ± 0.2

51.6 ± 0.3

52.0 ± 0.2

52.2 ± 0. 2

c,d

D2(Gy)

53.5 ± 0.4

53.1 ± 0.6

53.6 ± 0.31

54.2 ± 0.47

b,c

D98(Gy)

48.4 ± 0.4

48.0 ± 0.6

48.5 ± 0.3

48.1 ± 0. 4

b,c

V107(%)

3.2 ± 2.4

1.4 ± 2.2

3.6 ± 2.8

11.1 ± 8.4

b,c

V110(%)

0.0 ± 0.1

0.0 ± 0.0

0.0 ± 0.0

0.4 ± 0.5

b

CI

0.87 ± 0.02

0.82 ± 0.04

0.86 ± 0.02

0.83 ± 0.03

a,b,c

HI(%)

10.3 ± 1.5

10.2 ± 2.1

10.1 ± 1.1

12.0 ± 1.4

b

  1. a: T-4arc versus T-8arc, b: H-4arc versus H-8arc, c: T-8arc versus H-4arc, d: T-4arc versus H-4arc
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Radiation Oncology

ISSN: 1748-717X

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