MRI Texture Analysis of Background Parenchymal Enhancement of the Breast

Table 2

Texture parameters of the 6 breast lesions.

	Variance of SI	Mean of gradient	Variance of gradient	EnLH	EnHL
	1382.5	35.4	353.5	60.9	52.1
	1656.2	33.8	372.3	44.9	51.4
	1336.4	33.8	451	45.5	77.1
DCIS	290	18.8	112.1	12.9	15
Fibroadenoma	224.3	16.7	116.8	16.8	26.6
Fibroadenoma	305.8	18.9	170.7	13.9	20.6
Highest value of BPE	685.4	26.3	248.4	22.8	45.7

SI: signal intensity, En: entropy, IDC: invasive ductal carcinoma, DCIS: ductal carcinoma in situ, and BPE: background parenchymal enhancement. The 2 IDC and 1 DCIS showed the variance of SI, mean and variance of gradient, EnLH, and EnHL higher than their highest values of BPE.