Author:

Keywords:

Science & Technology, Life Sciences & Biomedicine, Medicine, General & Internal, General & Internal Medicine, HUMAN CHORIONIC-GONADOTROPIN, EARLY EMBRYONIC DEMISE, DOUBLE SAC SIGN, SERUM BETA-HCG, ECTOPIC PREGNANCY, VAGINAL SONOGRAPHY, EARLY INTRAUTERINE, GESTATIONAL SAC, INTRADECIDUAL SIGN, UNKNOWN LOCATION, Crown-Rump Length, False Positive Reactions, Female, Fetal Death, Fetal Viability, Gestational Sac, Humans, Pregnancy, Pregnancy Trimester, First, Ultrasonography, Prenatal, Society of Radiologists in Ultrasound Multispecialty Panel on Early First Trimester Diagnosis of Miscarriage and Exclusion of a Viable Intrauterine Pregnancy, 11 Medical and Health Sciences, 32 Biomedical and clinical sciences, 42 Health sciences