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Table 1 The values of textural features calculated from edge-enhanced fluences

From: Texture analysis on the edge-enhanced fluence of VMAT

 

d= 1

d= 5

d= 10

 

Prostate

H&N

p

Prostate

H&N

p

Prostate

H&N

p

ASM (×10−3)

1.433 ± 0.170

0.842 ± 0.264

<0.001

2.183 ± 0.497

0.837 ± 0.270

<0.001

2.972 ± 0.650

0.989 ± 0.439

<0.001

IDM

0.236 ± 0.021

0.271 ± 0.027

<0.001

0.115 ± 0.013

0.167 ± 0.020

<0.001

0.082 ± 0.011

0.126 ± 0.015

<0.001

Contrast

264.73 ± 70.21

113.52 ± 51.79

<0.001

960.75 ± 236.74

341.90 ± 152.29

<0.001

1737.04 ± 484.32

537.56 ± 239.04

<0.001

Variance

45.48 ± 4.60

37.48 ± 7.74

0.001

46.41 ± 4.49

38.59 ± 8.08

0.001

46.32 ± 4.64

39.06 ± 8.10

0.002

Correlation

0.874 ± 0.021

0.921 ± 0.017

<0.001

0.583 ± 0.050

0.791 ± 0.035

<0.001

0.308 ± 0.132

0.686 ± 0.059

<0.001

Entropy

2.971 ± 0.056

3.243 ± 0.118

<0.001

2.875 ± 0.071

3.308 ± 0.124

<0.001

2.730 ± 0.092

3.287 ± 0.151

<0.001

  1. Abbreviations: d = particular displacement distance, prostate = volumetric modulated arc therapy plans for prostate cancer, H&N = volumetric modulated arc therapy plans for head and neck cancer, ASM = angular second moment, IDM = inverse difference moment.