Figure 1From: Area of Wharton's jelly as an estimate of the thickness of the umbilical cord and its relationship with estimated fetal weight Ultrasonographic measurement of the cross-sectional area of the umbilical cord (C), of the diameter of the umbilical vein (V) and of the umbilical artery (A). The area of Wharton Jelly (WJ) is WJ = C-V-2A.Back to article page