After screening the related studies in the databases, all included diagnostic trials needed to meet the following inclusion and exclusion criteria. Inclusion criteria were as follows: the study population were cases with a confirmed diagnosis of breast cancer; diagnostic methods used were mammography or MRI; the gold standard for diagnosis of breast cancer was pathological examination; Include high-risk factors: BRCA1 or BRCA2 mutation carriers, personal or family history of breast or ovarian cancer, history of prior chest radiation. Exclusion criteria were as follows: case report or review study type; patients had obvious symptoms of breast cancer during screening; and duplicated publication or data.