Objective To study the diagnostic value of B-ultrasound(BUS) in the diagnosis of childhood renal duplication anomaly(CRDA) in comparison with intravenous pyelography(IVP).

• 目的研究B型超声和静脉肾盂造影术(IVP)对小儿肾重复畸形(以下简称重肾)的影像诊断价值。