Doppler velocimetry of the ductus arteriosus in normal fetuses and fetuses suspected for pulmonary hypoplasia.

Objective: The purpose of this study was to determine whether the pulsatility index (PI) of the ductus arteriosus could predict the occurrence of pulmonary hypoplasia secondary to congenital disorders or complications during pregnancy.

Sample And Methods: In this longitudinal study, 78 uncomplicated pregnancies and 43 pregnancies complicated by various disorders or complications with regard to pulmonary hypoplasia were studied by Doppler sonography between 18 and 35 weeks of gestation. A PI >97.

Congenital diaphragmatic hernia: 2D lung area and 3D lung volume measurements of the contralateral lung to predict postnatal outcome.

Objectives: The aim of the study was to evaluate the prognostic utility of 2D lung area and 3D lung volume measurements of the contralateral lung in infants with congenital diaphragmatic hernia.

Methods: At 18-37 weeks' gestation between 1 and 5 scans of the contralateral fetal lung were obtained in 6 pregnancies complicated by congenital diaphragmatic hernia (5 left- and 1 right-sided). Lung volume measurements were compared with reference curves for gestational age and estimated fetal weight obtained from uncomplicated pregnancies.

Predicting pulmonary hypoplasia with 2- or 3-dimensional ultrasonography in complicated pregnancies.

Objective: The aim of this study was to compare 3-dimensional (3D) lung volume measurements with 2-dimensional (2D) biometric parameters in predicting pulmonary hypoplasia in complicated pregnancies.

Study Design: In this prospective study, 1-4 scans of the fetal lungs were obtained in 33 pregnancies complicated by various disorders or complications with regard to pulmonary hypoplasia. The 3D lung volumes vs gestational age or estimated fetal weight, the thoracic circumference vs gestational age or femur length, the thoracic/abdominal circumference ratio, and the thoracic/heart area ratio were measured.

Fetal lung volume: three-dimensional ultrasonography compared with magnetic resonance imaging.

Objectives: An accurate and reliable method for measuring fetal lung volumes would be helpful in predicting the outcome in cases with suspected impaired lung growth. Recent studies show that it is possible to obtain fetal lung volume estimations with magnetic resonance imaging (MRI) and three-dimensional (3D) ultrasonography. The purpose of this study was to assess the agreement of lung volumes measured with 3D ultrasonography and MRI in uncomplicated pregnancies.