Difference between mean gestational sac diameter and crown-rump length as a marker of first-trimester pregnancy loss after in vitro fertilization

Difference between mean gestational sac diameter and crown-rump length as a marker of first-trimester pregnancy loss after in vitro fertilization
To investigate whether the difference between mean gestational sac diameter and crown-rump length (mGSD − CRL) is associated with first-trimester pregnancy loss or adverse pregnancy outcomes after in vitro fertilization (IVF) and to determine if mGSD − CRL is a better predictor of pregnancy loss than either measurement alone.
Source: fertstert.org