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Table 2 Optimal respiratory gating impacts the correlation of [18F]FDG PET-derived image features with overall survival, assessed by univariate logistic regression analysis

From: Optimal respiratory-gated [18F]FDG PET/CT significantly impacts the quantification of metabolic parameters and their correlation with overall survival in patients with pancreatic ductal adenocarcinoma

Image feature Non-ORG ORG
  HR 95%CI p value HR 95%CI p value
MTV 1.056 (0.636–1.751) 0.834 1.218 (0.638–2.322) 0.550
SUVmin 1.206 (0.964–1.510) 0.102 0.976 (0.756–1.258) 0.850
SUVmax 1.324 (1.031–1.700) 0.026 1.121 (0.860–1.461) 0.397
SUVmean 1.328 (1.072–1.645) 0.008 1.137 (0.891–1.451) 0.303
SUVdiff 1.360 (1.011–1.830) 0.041 1.155 (0.884–1.510) 0.288
Variance 1.242 (0.965 –1.598) 0.080 1.045 (0.792–1.378) 0.756
Skewness 1.088 (0.843–1.404) 0.516 0.770 (0.577–1.027) 0.076
Kurtosis 0.871 (0.668–1.135) 0.306 0.894 (0.663–1.206) 0.462
Entropy.image 1.232 (0.910–1.669) 0.177 1.198 (0.910–1.577) 0.196
STD 1.271 (0.968–1.669) 0.083 1.064 (0.812–1.395) 0.653
Energy 0.999 (0.769–1.298) 0.992 0.812 (0.594–1.110) 0.181
Contrast 1.051 (0.813–1.359) 0.704 0.809 (0.612–1.069) 0.135
Dissimilarity 1.056 (0.812–1.374) 0.684 0.845 (0.650–1.099) 0.208
Homogeneity.1 0.917 (0.680–1.237) 0.571 1.018 (0.793–1.309) 0.887
Homogeneity.2 0.899 (0.652–1.241) 0.517 0.982 (0.766–1.258) 0.884
Correlation 0.923 (0.724–1.178) 0.521 1.181 (0.899–1.552) 0.231
Difference Entropy.1 1.131 (0.828–1.543) 0.439 1.362 (0.989–1.876) 0.055
Joint Entropy.2 1.093 (0.824–1.450) 0.535 1.290 (0.980–1.698) 0.068
Sum Entropy.3 1.086 (0.819–1.439) 0.568 1.340 (1001–1.795) 0.048
Short.Run.Emphasis 1.097 (0.799–1.506) 0.565 1.040 (0.804–1.346) 0.764
Long.Run.Emphasis 0.914 (0.654–1.278) 0.599 0.923 (0.702–1.214) 0.567
Gray.Level.Non-Uniformity 0.983 (0.590–1.639) 0.948 0.967 (0.503–1.860) 0.919
Gray.Level.Non-Uniformity.Normalized 0.976 (0.746–1.278) 0.861 0.766 (0.552–1.062) 0.101
Run.Length.Non-Uniformity 1.059 (0.650–1.727) 0.817 1.244 (0.670–2.310) 0.489
Run.Length.Non-Uniformity.Normalized 1.094 (0.800–1.496) 0.575 1.033 (0.800–1.334) 0.804
Run.Percentage 1.091 (0.789–1.508) 0.598 1.057 (0.812–1.374) 0.681
GrayLevelVariance 0.971 (0.744–1.268) 0.832 0.873 (0.665–1.145) 0.325
SmallAreaHighGrayLevelEmphasis 1.034 (0.781–1.367) 0.818 1.224 (0.924–1.622) 0.158
GrayLevelNonUniformityNormalized 0.982 (0.752–1.283) 0.895 0.773 (0.559–1.067) 0.110
SizeZoneNonUniformityNormalized 1.082 (0.824–1.420) 0.572 0.876 (0.670–1.145) 0.331
SizeZoneNonUniformity 1.098 (0.740–1.629) 0.643 1.310 (0.796–2.156) 0.286
GrayLevelNonUniformity 1.011 (0.625–1.637) 0.964 1.063 (0.585–1.932) 0.841
LargeAreaEmphasis 0.831 (0.447–1.543) 0.557 0.726 (0.400–1.320) 0.254
ZoneVariance 0.733 (0.262–2.053) 0.555 0.611 (0.240–1.556) 0.198
ZonePercentage 1.078 (0.801–1.451) 0.621 0.963 (0.747–1.241) 0.769