Results 41 to 50 of about 9,095,695 (256)

Feasibility of Quantitative Flow Ratio Virtual Stenting for Guidance of Serial Coronary Lesions Intervention

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Coronary physiology measurement in serial coronary lesions with multiple stenoses is challenging. Therefore, we evaluated the feasibility of Murray fractal law‐based quantitative flow ratio (μQFR) virtual stenting for guidance of serial ...
Shaofeng Guan, Qian Gan, Wenzheng Han, Xinrong Zhai, Ming Wang, Yang Chen, Liang Zhang, Tianqi Li, Xifeng Chang, Hongyuan Liu, Weilin Hong, Zehang Li, Shengxian Tu, Xinkai Qu   +13 more
doaj   +1 more source

Quantitative flow ratio (QFR) data.

, 2020
Quantitative flow ratio (QFR) data.
Michel Noutsias (377612), Kevin Gigengack (8384349), Leif-Christopher Engel (8384340), Thomas-Heinrich Wurster (8384352), Andreas Schuster (329436), Boris Bigalke (320339), Carsten Skurk (4886341), Costantina Manes (8384355), Rene M. Botnar (8384358), Milosz Jaguszewski (8384346), Ulf Landmesser (214529), Youssef S. Abdelwahed (8384343), Marcus R. Makowski (3825946), Bernd Hamm (43173)   +13 more
core   +1 more source

Performance Back-deduction from a Loading to Flow Coefficient Map: Application to Radial Turbine [PDF]

, 2012
Radial turbine stages are often used for applications requiring off-design operation, as turbocharging for instance. The off-design ability of such stages is commonly analyzed through the traditional turbine map, plotting the reduced mass-flow against ...
Binder, Nicolas, Carbonneau, Xavier
core   +1 more source

Referral of patients for fractional flow reserve using quantitative flow ratio

European Heart Journal - Cardiovascular Imaging, 2018
Abstract Aims Quantitative flow ratio (QFR) is a recently developed technique to calculate fractional flow reserve (FFR) based on 3D quantitative coronary angiography and computational fluid dynamics, obviating the need for a pressure-wire and hyperaemia induction.
Smit, J.M., Koning, G., Rosendael, A.R. van, Mahdiui, M. el, Mertens, B.J., Schalij, M.J., Jukema, J.W., Delgado, V., Reiber, J.H.C., Bax, J.J., Scholte, A.J.   +10 more
openaire   +4 more sources

Functional classification discordance in intermediate coronary stenoses between fractional flow reserve and angiography-based quantitative flow ratio

Open Heart, 2020
BackgroundMeasurement of the contrast-flow quantitative flow ratio (cQFR) is a novel method for rapid computational estimation of fractional flow reserve (FFR).
Yoshinori Kanno, Masahiro Hoshino, Rikuta Hamaya, Tomoyo Sugiyama, Yoshihisa Kanaji, Eisuke Usui, Masao Yamaguchi, Masahiro Hada, Hiroaki Ohya, Yohei Sumino, Hidenori Hirano, Haruhito Yuki, Tomoki Horie, Tadashi Murai, Tetsumin Lee, Taishi Yonetsu, Tsunekazu Kakuta   +16 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Functional assessment in acute coronary syndrome: a systematic review of acute versus staged interventions

REC: Interventional Cardiology (English Ed.)
Introduction and objectives: Several tools have been implemented to assess the functional significance of coronary lesions. Their reliability in the management of acute coronary syndrome (ACS) might be affected by alterations in the acute phase that go ...
Federico Vergni, Silvia Buscarini, Leonardo Ciurlanti, Filippo Luca Gurgoglione, Francesco Pellone, Mario Luzi   +5 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Flow Separation in Rocket Nozzles, a Simple Criteria [PDF]

, 2005
Cold and hot flow tests were conducted to investigate the flow separation in rocket nozzles. The results are presented. A separation data base including a wide range of literature data is established to evaluate the influence of propellant combination ...
Ralf Stark, Stark, Ralf
core   +1 more source

Modelling pressure fluctuations during flow boiling in microchannels with inlet compressibility and resistance [PDF]

, 2009
Confined bubble growth during flow boiling at low pressures in microchannels generates pressure fluctuations that may cause transient flow reversals that disturb the flow distribution in heat sinks formed of parallel channels joined by plena.
Gedupudi, S, Karayiannis, TG, Kenning, DBR   +2 more
core   +6 more sources