Analysis of background echotexture on automated breast ultrasound using BI‐RADS and modified classification: Association with clinical features and mammographic density

Purpose To analyze BE on ABUS using BI‐RADS and a modified classification in association with mammographic density and clinical features. Methods Menopausal status, parity, and family history of breast cancer were collected for 496 women who underwent ABUS and mammography. Three radiologists independently reviewed all ABUS BE and mammographic density. Statistical analyses including kappa statistics (κ) for interobserver agreement, Fisher's exact test, and univariate and multivariate multinomial logistic regression were performed. Results BE distribution between the two classifications and between each classification and mammographic density were associated (P