FundAl Retroflexion (FAR) angle is a novel sonographic marker associated with Cesarean scar pregnancies in the first trimester: A case-control study.
Kathy Zhang-RutledgeKelsey PinsonMishella PerezRebecca R AdamiDora MelberMarni JacobsMana ParastLeah Lamale-SmithSarah AverbachMichael HahnDolores H PretoriusJerasimos BallasPublished in: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine (2021)
The FAR angle provides an easily obtainable and numerical measurement. CSP have larger FAR angle compared to normal controls with a distinguishing cut off of 40°. Larger studies are needed to determine if using the FAR angle can improve first trimester diagnosis for CSP.