Table 2 Radiomic features in the breast cancer risk prediction signature

	ROI	Phase	Wavelet	Category	Feature
f1	T	Enh21	HHL	GLCM	Cluster Shade
f2	T	Enh20	HHL	First order	Mean
f3	P	Precontrast	LHL	First order	Energy
f4	P	Precontrast	LHH	First order	Energy
f5	P	Precontrast	HLL	First order	Energy
f6	P	Precontrast	HHH	GLCM	Imc2
f7	P	Skewness	LHH	GLSZM	LGLZE
f8	P	Skewness	LLL	GLDM	GLV
f9	P	Mean	HLH	GLSZM	SALGLE
f10	P	Variance	LHH	GLRLM	SRLGLE
f11	P	Enh20	LHH	GLDM	DE
f12	W	Precontrast	HLH	GLSZM	SALGLE
f13	W	Skewness	LHH	NGTDM	Complexity

T tumor, P peritumor, W tumor and peritumor.
Enh21 = (S2-S1)/S1, Enh20 = (S2-S0)/S0, S0, S1 and S2 represent the precontrast image, early postcontrast image and late postcontrast image series, respectively.
H high-pass filters, L low-pass filters.
LGLZE Low Gray Level Zone Emphasis, GLV Gray Level Variance, SALGLE Small Area Low Gray Level Emphasis, SRLGLE Short Run Low Gray Level Emphasis, DE Dependence Entropy.

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