Placenta, Cord, and Membranes
KEY TERMS Print Section Listen Key Terms Basal plate: maternal surface of placenta. Chorioangioma: benign tumors arising from the fetal surface of the placenta. Chorionic plate: fetal surface of placenta….
Doppler Ultrasonography For the Diagnosis and Management of Fetal Anemia, Hydrops, and Fetal Lung Maturity
FETAL ANEMIA Print Section Listen Anemia continues to be an uncommon, but life-threatening, condition to the developing fetus. Red cell alloimmunization has historically been the most common cause of fetal…
Ultrasound evaluation in the modern labor delivery unit: an important diagnostic and management tool
INTRODUCTION Print Section Listen The last 3 decades have seen ultrasound evaluation become an integral part of obstetrics and gynecology. This diagnostic tool plays an essential role in the management…
Uterine Artery Doppler
KEY TERMS Print Section Listen Key Terms Diastolic notch: well seen depression or indentation in the initial early diastolic component of the Doppler waveform that indicates increased resistance to blood…
Normal Pelvic Anatomy as Depicted with Transvaginal Sonography
KEY TERMS Print Section Listen Key Terms Coronal: images obtained in the “elevational” plane. Curved (convex) array transducer: transducer elements arranged in curved fashion. Linear array: transducer elements linearly arranged….
Fetal Growth Restriction
KEY TERMS Print Section Listen Key Terms Fetal growth restriction (FGR): composite ultrasound estimated fetal weight less than 10th percentile for gestational age. Fetal growth potential (Gardosi): estimated fetal weight…
Ultrasound of the Fetus at 11 to 18 Weeks
INTRODUCTION Print Section Listen The anatomical survey, as well as the understanding of the developmental anatomy and detection rates of fetal anomalies, has evolved over the last 30 years as…
Fetal Biometry
KEY TERMS Print Section Listen Key Terms Biometry: measurements of fetal somatic structures in an attempt to establish the menstrual/gestational age or ensure appropriate interval growth. Menstrual age: conventional manner…
Ultrasound Bioeffects and Safety: What the Practitioner Should Know
KEY TERMS Print Section Listen Key Terms1 Acoustic streaming: movement of tissue or fluid, resulting from the passage of alternating positive and negative pressures of the ultrasound wave. Can also…
Sonographic Diagnosis of Abnormally Adherent Placenta
KEY TERMS Print Section Listen Key Terms Placenta attachment disorders (PAD): spectrum of disorders of abnormal placental implantation to the uterine wall due to an absence or deficiency of the…
