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There is a focal dilation at the end of the umbilical vein, called the umbilical recess. The UVC then passes into the ductus venosus, which originates cephalad from the left portal vein, opposite to ...

研究人员依据 UVC 尖端位置，将患儿分为中心组（导管尖端位于 IVC - RA junction）和非中心组（导管尖端位于理想中心位置之外），非中心组中又细分出导管尖端位于静脉导管（Ductus Venosus，DV）的 DV 亚组。随后，利用便携式超声诊断仪对患儿进行腹部超声检查 ...