Skip to main content

Table 2 Mean TT, MU-number, CI and HI for the three planning systems

From: A fast radiotherapy paradigm for anal cancer with volumetric modulated arc therapy (VMAT)

 

3D-CRT

VMAT '2Rot'

IMRT (MC Hyperion)

IMRT (PB Hyperion)

IMRT (PB Corvus)

HI

1.06 ± 0.02

1.11 ± 0.02

1.11 ± 0.08

1.10 ± 0.02

1.15 ± 0.03

CI

2.00 ± 0.16

1.39 ± 0.09

1.30 ± 0.02

1.26 ± 0.05

1.33 ± 0.21

MU

225 ± 11

268 ± 19

748 ± 193

477 ± 84

1260 ± 172

TT

220s

290s

610s

570s

575s

VTissue 10% PD

10739 cm3 ≡ 48.8%

10463 cm3 ≡ 47.6%

10806 cm3 ≡ 48.1%

10347 cm3 ≡ 46.0%

10591 cm3 ≡ 47.5%

VTissue 30% PD

8187 cm3 ≡ 37.3%

7674 cm3 ≡ 34.9%

7593 cm3 ≡ 33.8%

7199 cm3 ≡ 32.0%

7874 cm3 ≡ 35.3%

VTissue 50% PD

6052 cm3 ≡ 27.6%

5089 cm3 ≡ 23.1%

4203 cm3 ≡ 18.7%

3971 cm3 ≡ 17.7%

5186 cm3 ≡ 23.2%

VTissue 70% PD

3428 cm3 ≡ 15.6%

2734 cm3 ≡ 12.4%

1939 cm3 ≡ 8.6%

1933 cm3 ≡ 8.6%

2612 cm3 ≡ 11.7%

VTissue 95% PD

982 cm3 ≡ 4.5%

208 cm3 ≡ 0.9%

14 cm3 ≡ 0.0%

0 cm3 ≡ 0.0%

53 cm3 ≡ 0.2%

D95% Vol Tissue

1.97 Gy ≡ 5.46%

0.75 Gy ≡ 2.09%

0.35 Gy ≡ 0.98%

0.31 Gy ≡ 0.85%

0.52 Gy ≡ 1.45%

D95% Vol PTV

34.09 Gy ≡ 94.7%

33.84 Gy ≡ 94%

33.05 Gy ≡ 91.8%

32.95 Gy ≡ 91.54%

32.33 Gy ≡ 89.8%