Research Article

A CT-Based Radiomics Approach for the Differential Diagnosis of Sarcomatoid and Clear Cell Renal Cell Carcinoma

Table 3

The selected radiomics features and corresponding coefficients.

Selected CMP featuresCoefficients
First-order features
squareroot_Energy0.0003
squareroot_Maximum0.0057
wavelet-LHH_Skewness0.0069
Shape features
original_Minoraxis0.0312
Texture features
Gray-level run length matrix (GLRLM)
exponential_RunVariance0.0037
squareroot_GrayLevelNonUniformity0.0926
Selected NP features
First-order features
wavelet-HLH_Skewness-0.04831
wavelet-LHH_Median-0.0272
wavelet-HHH_Median-0.0076
squareroot_Energy0.0002
wavelet-LLH_fskewness0.0019
square_Kurtosis0.0337
wavelet-LHL_Mean0.0417
wavelet-LLH_Kurtosis0.0613
Shape features
original_SurfaceArea2.85E-5
original_RunVariance0.0210
original_SphericalDisproportion0.0226
Texture features
Gray-level cooccurrence matrix (GLCM)
square_Idmn-0.0196
square_Correlation-0.0075
wavelet-HHH_ClusterProminence0.0152
squareroot_DifferenceVariance0.0422
Gray-level run length matrix (GLRLM)
wavelet-LLL_ShortRunLowGrayLevelEmphasis-0.0075
square_ShortRunLowGrayLevelEmphasis0.0017
wavelet-HHH_RunVariance0.0225
exponential_RunVariance0.0242
exponential_RunEntropy0.0246
exponential_ShortRunLowGrayLevelEmphasis0.0499
Gray-level size zone matrix (GLSZM)
square_ZoneVariance-0.0285
wavelet-HLL_SizeZoneNonUniformityNormalized-0.0173
wavelet-LLL_LowGrayLevelZoneEmphasis-0.0086
wavelet-HLL_GrayLevelNonUniformity-0.0063
wavelet-LLL_ZoneVariance0.0022
wavelet-HHH_LargeAreaEmphasis0.0183
logarithm_LargeAreaLowGrayLevelEmphasis0.0437
logarithm_GrayLevelNonUniformity0.0938