نتایج جستجو برای: doppler velocimetry
تعداد نتایج: 49126 فیلتر نتایج به سال:
By employing a combination of optical heterodyne and linear frequency modulation techniques and utilizing state-of-the-art fiber optic technologies, highly efficient, compact and reliable lidar suitable for operation in a space environment is being developed. OCIS Codes: (280.3640) Lidar; (280.3340) Laser Doppler Velocimetry
OBJECTIVE To determine predictive values of maternal serum PAPP-A (msPAPP-A) levels, uterine artery Doppler velocimetry, and fetal biometric measurements (FBMs) for poor pregnancy and poor neonatal outcomes. MATERIAL AND METHODS This prospective cohort study was conducted on singleton pregnancies followed until delivery. Pregnancy and neonatal outcomes were evaluated with respect to the msPAP...
OBJECTIVES To determine the value of pulmonary artery Doppler velocimetry relative to fetal biometric indices and clinical correlates in the prenatal prediction of lethal lung hypoplasia (LH) in prolonged (>1 week) oligohydramnios. METHODS Forty-two singleton pregnancies with oligohydramnios associated with premature rupture of membranes ([PROM]; n = 31) or bilateral renal pathology (n = 11) ...
OBJECTIVE To relate Doppler velocimetry findings in fetoplacental and uteroplacental circulation to placental histomorphology. MATERIAL AND METHODS In 14 uncomplicated and 31 high-risk pregnancies Doppler velocimetry was performed in umbilical artery and vein, and in maternal uterine veins and arteries during the second half of gestation. Histopathology of the placentas was examined, especial...
OBJECTIVE To investigate whether fetal growth restriction (FGR) diagnosis, based on pathological prenatal fetal Doppler velocimetry, is associated with bronchopulmonary dysplasia (BPD) independently of being small for gestational age (SGA) per se at birth among very preterm infants. DESIGN Prospective, observational study. FGR was defined as failing fetal growth in utero and fetal Doppler vel...
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