However, the upper end of the “discriminatory zone” has continued to be used as a guideline for determining when a normal gestational sac should be visible by ultrasound. It has been generally ...
CRL: Crown—rump length; EV: Embryo volume; FV: Fetal volume; GSV: Gestational sac volume; PV: Placental volume; SonoAVC: Sonography-based automated volume count ...
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