Table S1. Feature type and associated features.
Feature type | Methods | Feature name |
---|---|---|
Shape-based | – | Maximum 3D diameter (M3D) |
Maximum 2D Diameter Slice (M2DS) | ||
Sphericity | ||
Minor Axis (MA) | ||
Elongation | ||
Surface Volume Ratio (SVR) | ||
Volume | ||
Major Axis (MA1) | ||
Surface Area (SA) | ||
Flatness | ||
Least Axis (LA) | ||
Maximum 2D Diameter Column (M2DC) | ||
Maximum 2D Diameter Row (M2DR) | ||
First order-based | Histogram | Interquartile Range (IQR) |
Skewness | ||
Uniformity | ||
Median | ||
Energy | ||
Robust Mean Absolute Deviation (RMAD) | ||
Mean Absolute Deviation (MAD) | ||
Total Energy (TE) | ||
Maximum | ||
Root Mean Squared (RMS) | ||
90 Percentile | ||
Minimum | ||
Entropy | ||
Range | ||
Variance | ||
10 Percentile | ||
Kurtosis | ||
Mean | ||
Texture-based | GLCM | Joint Average (JA) |
Sum Average (SA) | ||
Joint Entropy (JE) | ||
Cluster Shade (CS) | ||
Maximum Probability (MP) | ||
Idmn | ||
Joint Energy (JE) | ||
Contrast | ||
Difference Entropy (DE) | ||
Inverse Variance (IV) | ||
Difference Variance (DV) | ||
Idn | ||
Idm | ||
Correlation | ||
Autocorrelation | ||
Sum Entropy (SE) | ||
Sum Squares (SS) | ||
Cluster Prominence (CP) | ||
Imc2 | ||
Imc1 | ||
Difference Average (DA) | ||
Id | ||
Cluster Tendency (CT) | ||
GLSZM | Gray Level Variance (GLV) | |
Zone Variance (ZV) | ||
Gray Level Non-Uniformity Normalized (GLNUN) | ||
Size Zone Non-Uniformity Normalized (SZNUN) | ||
Size Zone Non-Uniformity (SZNU) | ||
Gray Level Non-Uniformity (GLNU) | ||
Large Area Emphasis (LAE) | ||
Small Area High Gray Level Emphasis (SAHGLE) | ||
Zone Percentage (ZP) | ||
Large Area Low Gray Level Emphasis (LALGLE) | ||
Large Area High Gray Level Emphasis (LAHGLE) | ||
High Gray Level Zone Emphasis (HGLZE) | ||
Small Area Emphasis (SAE) | ||
Low Gray Level Zone Emphasis (LGLZE) | ||
Zone Entropy (ZE) | ||
Small Area Low Gray Level Emphasis (SALGLE) | ||
GLRLM | Short Run Low Gray Level Emphasis (SRLGLE) | |
Gray Level Variance (GLV) | ||
Low Gray Level Run Emphasis (LGLRE) | ||
Gray Level Non-Uniformity Normalized (GLNUN) | ||
Run Variance (RV) | ||
Gray Level Non-Uniformity (GLNU) | ||
Long Run Emphasis (LRE) | ||
Short Run High Gray Level Emphasis (SRHGLE) | ||
Run Length Non-Uniformity (RLNU) | ||
Short Run Emphasis (SRE) | ||
Long Run High Gray Level Emphasis (LRHGLE) | ||
Run Percentage (RP) | ||
Long Run Low Gray Level Emphasis (LRLGLE) | ||
Run Entropy (RE) | ||
High Gray Level Run Emphasis (HGLRE) | ||
Run Length Non-Uniformity Normalized (RLNUN) | ||
NGTDM | Coarseness | |
Complexity | ||
Strength | ||
Contrast | ||
Busyness | ||
GLDM | Gray Level Variance (GLV) | |
High Gray Level Emphasis (HGLE) | ||
Dependence Entropy (DE) | ||
Dependence Non-Uniformity (DNU) | ||
Gray Level Non-Uniformity (GLNU) | ||
Small Dependence Emphasis (SDE) | ||
Small Dependence High Gray Level Emphasis (SDHGLE) | ||
Dependence Non-Uniformity Normalized (DNUN) | ||
Large Dependence Emphasis (LDE) | ||
Large Dependence Low Gray Level Emphasis (LDLGLE) | ||
Dependence Variance (DV) | ||
Large Dependence High Gray Level Emphasis (LDHGLE) | ||
Small Dependence Low Gray Level Emphasis (SDLGLE) | ||
Low Gray Level Emphasis (LGLE) | ||
Wavelet-based | First-order statistic and texture of wavelet decomposition | First-order features |
GLCM features | ||
GLSZM features | ||
Decomposition levels: LLL, LLH, LHL, LHH, HLL, HLH, HHL, HHH | GLRLM features | |
NGTDM features | ||
GLDM features |
GLCM, gray-level co-occurrence matrix, describe the second-order joint probability function of the voxel intensities within the contoured volume; GLSZM, gray-level size-zone matrix, quantify the number of connected voxels within the contoured volume that share the same gray level intensity; GLRLM, gray-level run-Length matrix, quantify the number of consecutive voxels that have the same gray level value; NGTDM, neighboring gray-tone difference matrix, quantify the difference between a gray value and the average gray value of its neighbors within 3×3×3 voxels neighborhood window; GLDM, gray-level dependence matrix, quantify the gray level dependencies in the contoured volume which is defined as the number of connected voxels within a specific distance that are dependent on the center voxel; Decomposition levels, i.e., LLH interpreted as the high-pass sub band, resulting from directional filtering of the volume with a low-pass filter along x-direction, a low pass filter along y-direction and a high-pass filter along z-direction