Twin reversed arterial perfusion (TRAP) sequence consists of acardiac twin (A) paradoxically perfused by pump twin (P) through an umbilical artery (UA). We proposed characterization of acardiac twins with intrafetal vascular pattern (IVP), and assessed its correlation with morphology and UA Doppler indices.

中文翻译：

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无心双胞胎的形态，胎儿内血管模式和脐动脉多普勒指数。

双胞胎反向动脉灌注（TRAP）序列由被泵双胞胎（P）通过脐动脉（UA）自相矛盾地灌注的无心双胞胎（A）组成。我们提出表征胎儿双胎的胎儿内血管模式（IVP），并评估其与形态学和UA多普勒指数的相关性。