Reproducibility of first trimester three-dimensional placental measurements.

Objective: The aim of this study was to assess intra and interobserver reproducibility of placental volume and vascularization during the first trimester of pregnancy studied by three dimensional ultrasonography and angio power Doppler.

Study Design: This is a prospective study in 69 singleton pregnancies. Once the bi-dimensional protocol study was carried out, we performed a 3D-US (three-dimensional ultrasonography) of the placenta by abdominal ultrasonography.

[Reproducibility of the fetal nasal bone measurement by means of bidimensional and three-dimensional ecography during the second trimester of the pregnancy].

Aims: The utility of the valuation-measurement of the nasal bone in the prognosis of chromosomopaties during the second trimester of the pregnancy is demonstrated.

Objective: To evaluate the repeatability of nasal bone measurement during second trimester with bidimensional and three-dimensional sonography.

Material And Method: Nasal bone was measured in 50 single pregnancies.