... Dynamic MRI. 1 Corresponding author. e-mail:  roldan@wisc.edu 16 10 2023 12 03 2024 08 04 2024 lowery urinary tract symptoms bladder urodynamics dynamic MRI particle image velocimetry National Institute of Diabetes and Digestive and Kidney Diseases...

... 2022 CTA images particle image velocimetry hemodynamics wall shear stress computational fluid dynamics National Natural Science Foundation of China 10.13039/501100001809 12162026 Iliac-vein compression or abnormal intra-luminal adhesion causes lower limb and pelvic...

...Toshihiro Sera; Naoki Kamiya; Taichi Fukushima; Gaku Tanaka We visualized the flow patterns in an alveolated duct model with breathing-like expanding and contracting wall motions using particle image velocimetry, and then, we investigated the effect of acinar deformation on the flow patterns. We...

... , F. , Wieneke , B. , and van Oudheusden , B. W. , 2006 , “ Tomographic Particle Image Velocimetry ,” Exp. Fluids , 41 ( 6 ), pp. 933 – 947 . 10.1007/s00348-006-0212-z [16] Schanz , D. , Gesemann , S. , and Schröder , A. , 2016 , “ Shake-The-Box...

... experiments mimicking low- and high-flow conditions, as well as steady and pulsatile flow, were conducted. Additionally, a particle image velocimetry (PIV)-compatible Fontan model was created and flow was analyzed with PIV, arterial spin labeling (ASL), and four-dimensional (4D) flow MRI. Differences, though...

... pressure drops. Furthermore, during the development of the 12cc Penn State pediatric PVAD, particle image velocimetry (PIV) illustrated that hematocrit levels, through changes in blood viscoelasticity, affected the fluid dynamics. The objective of this study is to compare the fluid dynamics of a pediatric...

... of pulsatile LVADs under these conditions. Particle image velocimetry (PIV) was used to capture planar flow in the pump body of a Penn State 50 cubic centimeters (cc) LVAD for heart rates of 75–150 bpm and respective systolic durations of 38–50%. Shear rates were calculated along the lower device wall...

... were made in the benchmark device at three independent laboratories using particle image velocimetry (PIV). Flow measurements were performed over a range of nozzle throat Reynolds numbers ( Re throat ) from 500 to 6500, covering the laminar, transitional, and turbulent flow regimes. A standard...

... of expanding and contracting in phase with the oscillatory flow through the tube. Realistic breathing conditions were achieved by exercising the model at physiologically relevant Reynolds and Womersley numbers. Particle image velocimetry was used to measure the resulting flow patterns in the alveolus. Data...

...-induced advection (computed from velocity maps obtained by particle image velocimetry) and gravitational settling. Particles were introduced during the first inhalation cycle and their trajectories and deposition statistics were calculated for subsequent cycles for three different particle sizes ( 0.25 μ...

... sac model geometries using particle image velocimetry under realistic breathing conditions. Penetration depth of the tidal air was determined from the experimental fluid pathlines. Aerosol particle deposition was estimated by simple superposition of Brownian diffusion and sedimentation...

..., and a wall shear rate greater than 500 s − 1 . Particle image velocimetry was used to compare the flow fields in the chamber of the 12 cc Penn State pediatric pulsatile VAD using two mechanical heart valves: Björk–Shiley monostrut (BSM) tilting disk valves and CarboMedics (CM) bileaflet valves...

... detailed, CFD-predicted velocity fields against those measured using particle imaging velocimetry (PIV). Two anatomically realistic flow-through phantoms, one a giant internal carotid artery (ICA) aneurysm and the other a basilar artery (BA) tip aneurysm, were constructed of a clear silicone elastomer...

... aneurysms by using particle image velocimetry (PIV) measurements, with a focus on the effects of small geometric variations in aneurysm models on the flow dynamics obtained with CFD. Method of Approach . An experimental phantom was fabricated out of silicone elastomer to best mimic a spherical aneurysm...