Multiphase computed tomography radiomics of pancreatic intraductal papillary mucinous neoplasms to predict malignancy

Table 1 Radiomic features evaluated in the intraductal papillary mucinous neoplasm study cohort (n = 39)

HU based features	Length features	Shape features	GLCM features
Mean HU	Volumetric length	Surface area volume	GLCM row mean
Minimum HU	Craniocaudal length	Surface area to volume ratio	GLCM row variance
Maximum HU	Transverse length	Compactness 1st order	GLCM row standard deviation
Median HU	Anterior-posterior length	Compactness 2nd order	GLCM column means
Variance HU		Spherical disproportion	GLCM column variance
Standard deviation HU		Sphericity	GLCM column standard deviation
Root mean square HU			GLCM correlation
Energy HU			GLCM energy
Entropy HU (histogram)			GLCM entropy
Kurtosis HU (histogram)			GLCM contrast
Skewness HU (histogram)			GLCM homogeneity
Mean deviation HU			GLCM dissimilarity
Uniformity HU			GLCM angular second moment
Normalized above mean deviation HU
Uniformity

HU: Hounsfield units; GLCM: Gray level co-occurrence matrix.