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Table 3 Differences for ipsilateral lung dose in lung SBRT

From: Dosimetric impact of different CT datasets for stereotactic treatment planning using 3D conformal radiotherapy or volumetric modulated arc therapy

  

3D-CRT

VMAT

 

CT datasets

Δ [%]

P value

Δ [%]

P value

ΔDmean

PCT vs AIP

0.6 ± 6.6

0.39

1.2 ± 6.8

0.29

 

MIP vs AIP

−5.6 ± 14.5

0.21

−5.6 ± 13.7

0.20

 

MidV vs AIP

0.4 ± 2.8

0.80

0.4 ± 2.7

0.80

 

MIP vs PCT

−6.0 ± 14.9

0.13

−6.5 ± 14.1

0.06

 

MidV vs PCT

0.2 ± 7.7

0.39

−0.4 ± 7.7

0.24

 

MIP vs MidV

−5.9 ± 14.7

0.28

−5.8 ± 13.9

0.14

ΔV30

PCT vs AIP

7.2 ± 12.7

0.07

8.9 ± 13.5

0.07

 

MIP vs AIP

−23.6 ± 17.0

0.01*

−25.0 ± 16.5

0.01*

 

MidV vs AIP

−0.6 ± 2.3

0.39

−0.6 ± 2.5

0.33

 

MIP vs PCT

−28.0 ± 18.5

0.01*

−30.4 ± 17.7

0.01*

 

MidV vs PCT

−6.1 ± 11.2

0.07

−7.4 ± 11.6

0.06

 

MIP vs MidV

−23.1 ± 16.9

0.01*

−24.5 ± 16.5

0.01*

ΔV20

PCT vs AIP

3.5 ± 10.2

0.07

4.9 ± 10.6

0.07

 

MIP vs AIP

−22.2 ± 15.4

0.01*

−22.4 ± 14.1

0.01*

 

MidV vs AIP

−0.9 ± 3.4

0.17

−0.9 ± 3.4

0.17

 

MIP vs PCT

−24.4 ± 16.1

0.01*

−25.5 ± 15.2

0.01*

 

MidV vs PCT

−3.3 ± 10.7

0.07

−4.6 ± 10.6

0.07

 

MIP vs MidV

−21.4 ± 15.4

0.01*

−21.6 ± 14.1

0.01*

ΔV10

PCT vs AIP

1.6 ± 9.1

0.24

1.9 ± 9.8

0.29

 

MIP vs AIP

−20.8 ± 11.7

0.01*

−21.8 ± 12.7

0.01*

 

MidV vs AIP

−1.2 ± 4.3

0.17

−1.2 ± 4.5

0.20

 

MIP vs PCT

−21.8 ± 11.1

0.01*

−23.0 ± 11.9

0.01*

 

MidV vs PCT

−2.0 ± 10.2

0.11

−2.2 ± 10.9

0.14

 

MIP vs MidV

−19.7 ± 12.1

0.01*

−20.7 ± 12.8

0.01*

  1. Relative differences for ipsilateral lung dose (mean ± standard deviation) in lung SBRT between the different CT datasets for 3D-CRT and VMAT plans. PCT planning CT, AIP average intensity projection CT, MIP maximum intensity projection CT, MidV mid-ventilation CT. *assigns statistical significant values (p < 0.05)