多胎妊娠会增加不和谐异常的风险，与单胎妊娠相比，非整倍体和生长受限。此外,共享相同胎盘的双胞胎有发展可能适合手术治疗的特定条件的风险。在这些场景中,患者可能不仅需要使用US进行评估,还需要使用胎儿MRI进行评估.本文概述了在第二和第三三个月对复杂的多胎妊娠进行成像时要考虑的基本准则。
Multiple-fetus gestations have an increased risk of discordant anomalies, aneuploidy and growth restriction compared to singleton pregnancies. In addition, twins sharing the same placenta are at risk for developing specific conditions that are potentially amenable to surgical management. In those scenarios, patients might need to be evaluated not only with US but with fetal MRI as well. This paper outlines basic
guidelines to consider when imaging complicated multiple-fetus gestations during the 2nd and 3rd trimesters.
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