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    Academic Radiology, Vol 26, No 2, February 2019 RADIOMICS IN DIAGNOSING LUMINAL A CANCERS
    Image Feature Description
    Volume (mm3) Volume of lesion Effective greatest dimension (mm) Greatest dimension of a sphere with the same volume as the lesion Surface area (mm2) Lesion surface area Maximum linear size (mm) Maximum distance between any two voxels in the lesion Shape
    Sphericity Similarity of the lesion shape to a sphere Irregularity Deviation of the lesion surface from the surface of a sphere Surface area-to-volume ratio (1/mm) Ratio of surface area to volume Morphology
    Margin sharpness Mean of the image gradient at the lesion margin Variance of margin sharpness Variance of the image gradient at the lesion margin Variance of radial gradient histogram Degree to which the enhancement structure extends in a radial
    pattern originating from the center of the lesion Enhancement texture
    Angular second moment (energy)