chorionicity ultrasound
Last reviewed 01/2018
A chorionicity ultrasound is used to distinguish between twins that share a placenta and those who have separate ones, so that twins at higher risk of complications can be monitored more closely.
- NICE state "..determine chorionicity at the time of detecting twin
and triplet pregnancies by ultrasound using the number of placental masses,
the lambda or T-sign and membrane thickness (1)"
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