The growth-restricted fetus is a fetus who fails to reach his growth potential and is at risk for perinatal morbidity and mortality. When a fetus has an estimated weight below the 10th percentile, in the absence of congenital anomalies and in the presence of a normal amount of amniotic fluid, Doppler velocimetry gives the most important information to differentiate the truly growth-restricted f...

This work investigates the error caused by nonuniformities along the line-of-sight in velocity measurement using tunable diode-laser absorption spectroscopy (TDLAS). Past work has demonstrated TDLAS as an attractive diagnostic technique for measuring velocity, which is inferred from the Doppler shift of two absorption features using two crossing laser beams. However, because TDLAS is line-of-si...

Cutaneous arterioles are controlled by vasoconstrictor and active vasodilator sympathetic nerves. To find out whether the active vasodilator system is under baroreceptor control, laser-Doppler velocimetry and the local iontophoresis of bretylium were combined to allow selective study of the active vasodilator system. Each of six subjects had two forearm sites (0.64 cm2) treated with bretylium t...

BACKGROUND AND AIM OF THE STUDY An integrated macro/micro approach was used to evaluate flow within the pivots of the Medtronic ADVANTAGE bileaflet heart valve. Results were compared with those obtained with the St. Jude Medical bileaflet heart valve. METHODS The integrated macro/micro approach consists of both a macroscopic hydrodynamic performance assessment and a three-part microscopic flo...

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