Tell or Say, please, what accuracy of US about definition of US on early term...

[Lelja]

Tell or Say, please, what accuracy of US about definition of US on early term???? To what term there corresponds or meets the size of a fetal egg 1, 6 sm??? And more, what term puts US at this stage? From conception???

[Pasenjuk A.M.]

Practically 100 % accuracy. Diemetr a fetal egg 1, 6 sootvetsvuet to 6 weeks beremenosti or to 4 weeks from conception