نتایج جستجو برای: ductus venosus
تعداد نتایج: 6459 فیلتر نتایج به سال:
Photonic Doppler velocimetry (PDV) has rapidly become a standard diagnostic for measuring velocities in dynamic compression research. While free surface velocity measurements are fairly straightforward, complications occur when PDV is used to measure a dynamically loaded sample through a window. Fresnel reflections can severely affect the velocity and time resolution of PDV measurements, especi...
The aim of this study was to assess whether slanted gel pads can be used to optimize beam-flow angles and flow velocity measurements for Doppler ultrasound. The right carotid artery of a single healthy female volunteer was measured alternatively five times without and with an 18° angled slanted gel pad between the ultrasound transducer and skin by 13 radiologists. Beam-flow angles and peak syst...
Euricon, a European Union funded study, had the objective of examining the issue of obtaining informed consent for neonatal research across Europe. As part of that project, legal representatives from these countries (see acknowledgements) were invited to a colloquium to report, discuss, and analyse European legal frameworks governing informed consent for neonatal research. The first author (PDV...
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