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目的用三维超声(3D US)去量化验证婴幼儿髋关节由于二维超声(2D US)探测方向改变引起的α角测量变异及其对先天性髋关节发育不良(DDH)诊断分类的影响。材料
Objective To quantify α-angle variability caused by 2D US detection in infants and young children by 3D US to quantify the impact on the diagnosis and classification of congenital hip dysplasia (DDH). material