Skip to main content

Table 3 Average difference of dose-volume indices between dose calculated on rCTdef, pCT, and sCT with physician-corrected and uncorrected contours (range is reported in brackets)

From: Cone beam CT-based adaptive intensity modulated proton therapy assessment using automated planning for head-and-neck cancer

 

rCTdef—pCT

P value

rCTdef–sCT_uncorr

P value

rCTdef—sCT

P value

Dmax (%), n = 13

0.16 ± 1.59

0.723

− 0.05 ± 1.41

0.902

0.02 ± 1.42

0.955

(− 3.16, 2.47)

(− 2.41, 3.7)

(− 2.5, 3.71)

Brainstem Dmax (%), n = 13

4.03 ± 5.19

0.018

0.74 ± 5.23

0.595

0.94 ± 3.98

0.402

(− 2.99, 14.36)

(− 7.61, 12.49)

(− 5.23, 11.47)

Cochlea_ips Dmean (%), n = 13

3.32 ± 4.45

0.017

0.93 ± 3.42

0.336

0.92 ± 2.83

0.277

(− 2.91, 12.85)

(− 5.45, 6.51)

(− 3.28, 7.53)

Cochlea_con Dmean (%), n = 9

1.49 ± 2.21

0.078

− 0.05 ± 2.99

0.959

0.16 ± 0.98

0.649

(− 0.09, 6.27)

(− 4.95, 6.63)

(− 1.59, 2.28)

Constrictors Dmean (%), n = 13

3.97 ± 7.31

0.094

− 0.33 ± 2.9

0.7

0.06 ± 1.22

0.919

(− 11.49, 14.28)

(− 4.85, 4.42)

(− 2.37, 2.19)

Larynx Dmean (%), n = 12

3.31 ± 5.29

0.062

0.49 ± 2.25

0.295

0.24 ± 1.02

0.376

(− 3.2, 14.85)

(− 2.71, 4.66)

(− 0.9, 2.18)

Mandible Dmax (%), n = 13

0.38 ± 1.95

0.536

− 0.47 ± 1.66

0.343

− 0.25 ± 1.24

0.491

(− 2.56, 3.76)

(− 2.78, 2.59)

(− 2.23, 2.07)

Oral Cavity Dmean (%), n = 13

− 0.27 ± 2.83

0.759

− 0.06 ± 1.1

0.881

0.14 ± 0.58

0.407

(− 6.17, 3.07)

(− 3.11, 1.64)

(− 0.8, 1.57)

Spinal Cord Dmax (%), n = 13

4.41 ± 9.38

0.135

0.68 ± 2.65

0.369

1.12 ± 2.92

0.194

(− 22.21, 13.99)

(− 2.72, 6.48)

(− 2.73, 9.32)

Parotid_ips Dmean (%), n = 8

− 0.29 ± 9.1

0.938

0.18 ± 3.52

0.886

0.39 ± 0.7

0.189

(− 18.67, 8.57)

(− 5.88, 4.44)

(− 0.12, 1.82)

Parotid_ips V20Gy (%), n = 8

0.75 ± 12.18

0.876

0.77 ± 5.35

0.717

1.17 ± 2.27

0.221

(− 21.74, 18.85)

(− 9.17, 7.31)

(− 0.16, 6.26)

Parotid_con Dmean (%), n = 10

1.11 ± 1.67

0.066

0.24 ± 1.24

0.564

0.13 ± 0.46

0.384

(− 0.21, 4.87)

(− 2.46, 2.22)

(− 0.65, 0.95)

Parotid_con V20Gy (%), n = 10

3.95 ± 3.02

0.043

− 0.08 ± 2.75

0.949

− 0.31 ± 1.3

0.618

(− 0.07, 6.79)

(− 4.7, 2.52)

(− 2.12, 1.51)

Submand_ips Dmean (%), n = 11

3.75 ± 7.16

0.129

0.65 ± 2.74

0.47

− 0.3 ± 0.79

0.208

(− 7.55, 17.71)

(− 3.43, 6.57)

(− 1.51, 0.81)

Submand_con Dmean (%), n = 10

0.09 ± 2.12

0.908

− 0.03 ± 0.57

0.817

0.03 ± 0.43

0.875

(− 3.26, 4.85)

(− 1.21, 0.72)

(− 0.81, 0.7)

Esophagus Dmean (%), n = 4

1.83 ± 3.78

0.953

− 0.05 ± 1.06

0.936

− 0.34 ± 1.11

0.589

(− 3.76, 4.26)

(− 1.38, 1.2)

(− 1.38, 1.13)

Eye_ips Dmax (%), n = 4

− 1.2 ± 3.03

0.487

− 1.28 ± 0.68

0.035

− 1.53 ± 2.26

0.262

(− 5.08, 2.17)

(− 2.04, − 0.42)

(− 4.92, − 0.36)

Eye_con Dmax (%), n = 4

− 0.24 ± 4.1

0.892

1.97 ± 1.65

0.097

0.18 ± 0.47

0.519

(− 5.81, 3.78)

(− 0.35, 3.31)

(− 0.32, 0.82)

ON_ips Dmax (%), n = 4

2.37 ± 13.22

0.764

2.3 ± 10.02

0.695

− 0.75 ± 1.56

0.406

(− 10.28, 19.24)

(− 5.89, 16.67)

(− 3.09, 0.23)

ON_cont Dmax (%), n = 4

− 1.59 ± 9.91

0.749

5.21 ± 9.56

0.355

0.7 ± 2.17

0.576

(− 10.17, 8.74)

(− 3.05, 18.57)

(− 0.79, 3.92)

Optic Chiasm Dmax (%), n = 4

6.49 ± 10.28

0.294

2.81 ± 5.1

0.355

2.91 ± 6.01

0.404

(− 3.28, 19.82)

(− 3.73, 8.69)

(− 0.4, 11.92)

CTV_primary V100 (%), n = 13

− 6.37 ± 11.98

0.079

− 0.86 ± 2.35

0.214

− 0.21 ± 1.18

0.528

(− 42.96, 3.57)

(− 5.95, 2.14)

(− 2.72, 1.26)

CTV_primary V95 (%), n = 13

− 2.72 ± 6.62

0.036

− 0.69 ± 1.33

0.154

− 0.2 ± 0.41

0.193

(− 24.32, 0.46)

(− 2.54, 0.41)

(− 1.09, 0.29)

CTV_scondary V100 (%), n = 7

− 4.23 ± 2.96

0.018

− 1.18 ± 0.98

0.032

− 0.46 ± 0.62

0.224

(− 7.09, − 0.56)

(− 2.72, − 0.22)

(− 1.62, 0.18)

CTV_scondary V95 (%), n = 7

− 2.17 ± 1.71

0.027

− 0.44 ± 0.56

0.116

− 0.25 ± 0.39

0.174

(− 4.54, 0.07)

(− 1.17, 0.37)

(− 0.98, 0.14)

CTV_tertiary V100 (%), n = 7

− 11.84 ± 11.64

0.055

− 1.52 ± 3.25

0.305

− 1.88 ± 2.25

0.097

(− 33.5, − 2.25)

(− 3.9, 4.8)

(− 6.2, 0.33)

CTV_tertiary V95 (%), n = 7

− 5.08 ± 4.78

0.048

− 0.31 ± 2.47

0.769

− 1.09 ± 1.47

0.13

(− 14.1, − 0.07)

(− 2.58, 4.24)

(− 3.97, − 0.02)

  1. The number of structures included in the analysis are indicated in the first column as n. It should be noted that some structures were excluded from analysis as they were far from CTVs and received a cumulative dose < 1 Gy. The maximum dose (Dmax) and mean dose (Dmean) are reported as relative dose. A P value < 0.05 is highlighted in bold and indicates statistical significance. A P value < 0.1 is highlighted in italic