Gracia and Barnhart [6] compared different methods of diagnosing ectopic pregnancy using combinations of transvaginal ultrasound ... which can mimic a gestational sac giving a false picture ...

can disrupt early pregnancy development. These factors can impair proper implantation or the growth of the gestational sac. Diagnosis of this type of pregnancy typically involves: Ultrasound to ...

Discovering no heartbeat at 6 weeks of pregnancy can be deeply ... days for a follow-up scan if: Gestational sac is well-shaped and in the uterus. Yolk sac (early nutrient source) is present.

The frequency dependence of attenuation of broadband ultrasound and the velocity of ... study was to see how BUAC and velocity change with gestational age (GA) and postnatal age (PNA).