Results 81 to 90 of about 15,294 (258)

Bias flow rate and ventilation efficiency during adult high-frequency oscillatory ventilation: a lung model study

Intensive Care Medicine Experimental, 2018
Background Bias flow (BF) is essential to maintain mean airway pressure (MAP) and to washout carbon dioxide (CO2) from the oscillator circuit during high-frequency oscillatory ventilation (HFOV).
Osamu Nagano, Tetsuya Yumoto, Atsunori Nishimatsu, Shunsuke Kanazawa, Takahisa Fujita, Sunao Asaba, Hideo Yamanouchi   +6 more
doaj   +1 more source

Characterization of Pulmonary Functional Abnormalities in Systemic Sclerosis Using Xenon MRI

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Xenon MRI is increasingly used to evaluate patients with interstitial lung disease (ILD) and pulmonary hypertension (PH), both of which are common manifestations of systemic sclerosis (SSc). As such, Xe‐MRI may be suited to interrogate lung function impairment in SSc.
Dawson Shaver, Steven Haworth, Evan Graumann, Bradie Frizzell, David H. Lee, Jiwoong Choi, Chase S. Hall, Scott M. Matson, Mark Hamblin, Mario Castro, Paul S. Schmidt, Peter J. Niedbalski   +11 more
wiley   +1 more source

Mass transport due to oscillatory flow through a prestressed viscoelastic tube with a retentive and absorptive wall [PDF]

, 2011
An asymptotic analysis is presented for the mass transport of a solute due to volume-cycled oscillatory flow in a prestressed and viscoelastic tube with a reactive wall layer (wall retention and absorption).
Ma, Y, Ng, CO
core   +1 more source

Combining the Underwater Vision Profiler 6 with sediment traps to measure in situ velocity of marine particles

Limnology and Oceanography: Methods, EarlyView.
Abstract Particles sinking from the surface to the deep ocean play a key role in the biological carbon pump, whose efficiency depends partly on sinking velocities. Over the last decade, in situ imaging has enabled critical advances in our understanding of particle dynamics in the ocean.
Manon Laget, Alexandre Accardo, Marc Picheral, Camille Catalano, Lionel Guidi, Tristan Biard   +5 more
wiley   +1 more source

High Frequency Oscillatory Ventilation in Children: Experience of a Medical Center in Taiwan

Journal of the Formosan Medical Association, 2008
Data about the effectiveness of high frequency oscillatory ventilation (HFOV) in children with respiratory failure are limited. This study investigated the efficacy and prognostic factors of this treatment. Methods: Children between 2 months and 18 years
Ching-Chia Wang, Wei-Lun Wu, En-Ting Wu, Hung-Chieh Chou, Frank Leigh Lu   +4 more
doaj   +1 more source

Dynamic Mode Decomposition (DMD) for Low‐Latency Real‐Time Cardiac MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate dynamic mode decomposition (DMD) for high spatiotemporal low‐latency online reconstruction in 2D real‐time cardiac MRI. Methods DMD was applied to 2D spiral balanced steady state free precession (bSSFP) real‐time adult and fetal cardiac MRI at 0.55 T, with data from 10 healthy adult volunteers (3F/7M; age: 21–49; BMI: 20–
Ecrin Yagiz, Bilal Tasdelen, Ibrahim K. Ozaslan, Mihailo R. Jovanovic, Ye Tian, Krishna S. Nayak   +5 more
wiley   +1 more source

Management of pneumothorax in hemodynamically stable preterm infants using high frequency oscillatory ventilation: report of five cases

Italian Journal of Pediatrics, 2017
Background Despite an increased use of non-invasive ventilatory strategies and gentle ventilation, pneumothorax remains a common complication in preterm infants.
Claudia Aurilia, Cinzia Ricci, Milena Tana, Chiara Tirone, Alessandra Lio, Alessandro Gambacorta, Angela Paladini, Giovanni Vento   +7 more
doaj   +1 more source

Effects of respiratory mechanics on the capnogram phases: importance of dynamic compliance of the respiratory system [PDF]

, 2012
INTRODUCTION: The slope of phase III of the capnogram (S(III)) relates to progressive emptying of the alveoli, a ventilation/perfusion mismatch, and ventilation inhomogeneity.
Barna Babik, Dorottya Czövek, Ferenc Peták, Gábor Bogáts, Patrick N Mayr, Zsófia Csorba   +5 more
core   +1 more source

A Hybrid RF Coil for Whole‐Brain Imaging in Non‐Human Primates at 7 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultra‐high field MRI (≥ 7 T) offers unprecedented potential for mapping non‐human primate (NHP) brain function. However, complex electromagnetic systems are required to meet the challenges of UHF imaging and the mechanical demands of awake NHP studies.
Elias Djaballah, Éric Giacomini, Paul‐François Gapais, Michel Luong, Alexis Amadon, Qi Zhu   +5 more
wiley   +1 more source

VQ‐Wave: A Physics‐Driven Spatiotemporal Deep Learning Approach for Noncontrast‐Enhanced Lung Ventilation and Perfusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a robust deep learning framework for noncontrast‐enhanced functional lung MRI, overcoming the limitations of spectral decomposition in the presence of physiological nonstationarity. Methods We introduce VQ‐Wave (Ventilation/Q‐perfusion Waveform‐based Assessment of Variable Evolutions), a physics‐driven spatiotemporal ...
Grzegorz Bauman, Pavlos Panos, Philipp Latzin, Oliver Bieri   +3 more
wiley   +1 more source