Supplemental Material

Table 13 Variability of features over Matrix size in patient

Feature category / Feature parent / COV≤5% / 5%<COV≤10% / 10%<COV≤20% / COV>20%
Texture / GLCM / Correlation / SAMglcm/ Contrast/ Entropy/ Homogeneity/ Dissimilarity/ IDMglcm
GLRLM / SRE/ LRE/ IV/ RLV/ RP/ LIRE/ HIRE/ LISRE/ HISRE/ LILRE/ HILRE
NGTDM / Coarseness/ Contrast/ Busyness/ Complexity/ Strength
GLSZM / SZE/ HISZE / HIZE / LZE/ IV/ SZV/ ZP/ LIZE/ LISZE/ LILZE/ HILZE
NGLCM / Entropy / Homogeneity / IDMnc / SAMnc/ Contrast/ Dissimilarity
NGLD / SNE / LNE/ NNU/ SM/Entropy
TFC / Entropy/ CE / Mean convergence / Coarseness/ Homogeneity/ Variance
GLCM-coding / Homogeneity/ Intensity/ IDMcglcm / SAMcglcm/ Contrast / CS
TS / MS / BWS
Intensity / SUV and intensity histogram / SUVmax/ Entropy/ SULpeak / SUDsd/ SMV1/ SMsuv2/ SUVmpsa/ Smxpsa/ Epsa/ SULppsa / SUVmean/ SUVvar/ SUVskew/ SUVkurt/ SUVbck/ SUVbck/ SSE1/ SsuvE2/ SMsuv3/ SsuvE3/ SUVmxpa/ EPA/ SULpeakPA / SUVmin/ STS1/ SSV1/ SsuvSD1/ SsuvNSR1/ STsuv2/ SsuvV2/ suvSD2/ SsuvNSR2/ STsuv3/ SsuvV3/ SsuvSD3/ SsuvNSR3/SUVmpa
Geometry / Shape / TLG/ Surface area / TV/ Asphericity

Table 14 Variability of features over time per bed in phantom

Feature category / Feature parent / COV≤5% / 5%<COV≤10% / 10%<COV≤20% / COV>20%
Texture / GLCM / Homogeneity/ Dissimilarity/ Correlation / SAMglcm/ Contrast/ Entropy/ IDMglcm
GLRLM / SRE/ LRE/ RLV/ RP / IV/ HIRE/ HISRE/ HILRE / LIRE/ LISRE /LILRE
NGTDM / Coarseness / Contrast
Busyness
Complexity
Strength
GLSZM / SZE/ IV/ ZP / SZV/ HIZE/ HISZE / LZE/ HILZE / LIZE /LISZE/ LILZE
NGLCM / Entropy/ Homogeneity/ Dissimilarity / SAMnc/ Contrast/ IDMnc
NGLD / SNE/ NNU/ SM/ Entropy / LNE
TFC / Homogeneity / Mean convergence / Variance / Coarseness
GLCM-coding / Entropy/ Homogeneity/ Intensity/ IDMcglcm/ CE / CS
TS / MS / BWS
Intensity / SUV and intensity histogram / SUVmean/ SUDsd/ SUVkurt/ Entropy/ SULpeak/ SMV1/ STS1/ SSE1/ SMsuv2/ STsuv2/ SsuvE2 /SMsuv3/ STsuv3/ SsuvE3/ SsuvV3/ SsuvSD3/ SsuvNSR3/ SUVmpa/ SUVmxpa/ EPA/ SULpeakPA/ SUVmpsa/ Epsa/ SULppsa / SUVmin/ SUVmax
SUVvar
SUVbck
SsuvSD1
SsuvNSR1
SsuvSD2
SsuvNSR2
Smxpsa / SSV1/ SsuvV2 / SUVskew/ SUVbck
Geometry / Shape / TLG/ TV/ Surface area/ Asphericity

Table 15 Texture feature description

Feature / Category / Concept
Gray Level Co-Occurrence Matrix (GLCM) / Texture / GLCM has been constructed from distance, angle and number of a combination of gray levels that occur in the image and describes the relationship and interaction between image pixel values.
Gray Level Run Length Matrix (GLRLM) / Texture / GLRLM considers continuous pixels with the same gray level in any direction.
Gray Level Size Zone Matrix (GLSZM) / Texture / GLSZM emphasizes the spatial frequency of the gray-level zone, a contiguous region with encompassed voxels having identical gray-level value
Neighbourhood Gray-Tone Difference Matrix (NGTDM) / Texture / NGTDM uses the intensity values of a neighbourhood instead of one pixel to represent how similar or dissimilar pixel intensities are within a neighbourhood

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EurRadiol (2017) Shiri I, Rahmim A,Ghaffarian P, Geramifar P, Abdollahi H,Bitarafan-Rajabi A