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. 2015 Aug;75(8):808–818. doi: 10.1055/s-0035-1557819

Fig. 12 a.

Fig. 12 a

to d Convoluted umbilical cord in a monoamniotic twin pregnancy. a Demonstration on ultrasound. b Macroscopic view of tangled umbilical cords. c and d Doppler ultrasound assessment of tangled umbilical cords. Two independent curves are seen in parallel (fetus 1 and fetus 2).