The presence or absence of lambda sign, T-sign, dividing membrane thickness and number of placentae were used to determine chorionicity.

Twin peak sign or lambda sign : feature of dichorionic diamniotic twin pregnancydefinition explanation figure T signFor anatomy lecture ...

In DCDA twins there is a triangular placental tissue projection (lambda sign) into the base of the membrane. Lambda sign (or twin peak sign) is ...

The lambda, or twin-peak, sign (the triangular projection of chorionic tissue extending into the intertwin membrane) is one of the most useful ...

The "lambda sign" is also called the "twin peak sign". At ultrasound at a gestational age of 16–20 weeks, the "lambda sign" is indicative of dichorionicity but ...

Conclusions: At 10-14 weeks' gestation, twin pregnancies with the lambda sign can be classified as dichorionic and pregnancies with absent lambda sign can be ...

Sonographically this space appears as a triangular-shaped extension of placental tissue into the base on the inter-twin membrane. This sign was first described ...

The twin peak sign (also known as the lambda (λ) sign) is a triangular appearance of the chorion insinuating between the layers of the intertwin membrane ...

The "T sign" is really the absence of a twin-peak sign (or lambda (λ) sign) and is used in ultrasound assessment of a multifetal pregnancy.