Table 1 Results and predictive features in the seven studies with the highest RQS and TRIPOD score
Study | Scores | Modality | N | Task | Performance | Radiomic features |
|---|---|---|---|---|---|---|
[6] | RQS: 16 TRIPOD: 27 | 18F-FDG PET | 73 | Response (TRG = 1) | Internal: AUC: 0.81 | 1. GLCM_AngularSecondMoment |
[27] | RQS: 14 TRIPOD: 26 | 18F-FDG PET | 96 | Response (TRG = 1) | Internal: AUC: 0.82 | 1. Shape_GearysCMeasure 2. GLRLM_LongRunLowGrey LevelEmphasis |
[10] | RQS: 13 TRIPOD: 31 | 18F-FDG PET | 403 | OS | Internal: \({\chi }_{3}^{2}\): 143.14 p < 0.001 | 1. IntensityHistogram_Energy 2. IntensityHistogram_Kurtosis |
[43] | RQS: 25 TRIPOD: 31 | 18F-FDG PET | 46 | OS | External: \({\chi }_{3}^{2}\): 1.27 p = 0.74 | 1. IntensityHistogram_Energy 2. IntensityHistogram_Kurtosis |
[25] | RQS: 17 TRIPOD: 29 | 18F-FDG PET | 190 | ypN stage | Internal: AUC: 0.82 95% CI [0.74–0.89] External: AUC: 0.69 95% CI [0.54–0.8] | 1. NGTDM_DependenceEntropy 2. Shape_VolumeDensity 3. NGTDM_Coarseness 4. IntensityHistogram_Minimum HistogramGradient 5. GLCM_InverseDifference MomentNormalised |
[25] | ,, | ,, | ,, | OS | External: \({\chi }_{3}^{2}\): 6.08 p = 0.01 | ,, |
[41] | RQS: 12 TRIPOD: 24 | CT | 239 | OS (3 yr) | Internal: AUC: 0.69 95% CI [0.61–0.77] External: AUC: 0.61 95% CI [0.47–0.75] | 1. GLCM_InverseVariance 2. GLDZM_LowGreyLevelZone Emphasis 3. GLRLM_RunLengthNon Uniformity 4. GLCM_InformationMeasure OfCorrelation1 5. NGLDM_DependenceCount Nonuniformity |
[4] | RQS: 12 TRIPOD: 31 | 18F-FDG PET | 217 | Response (TRG = 1) | Internal: AUC: 0.77 95% CI [0.70–0.83] | 1. GLCM_ClusterShade 2. GLRLM_RunPercentage 3. GLCM_JointEntropy 4. Shape_Sphericity |