Results 61 to 70 of about 152,362 (259)

Instantaneous Wave-Free Ratio or Fractional Flow Reserve Without Hyperemia

Journal of the American College of Cardiology, 2012
No abstract.
Pijls, Nico H.J., Van ‘t Veer, Marcel, Oldroyd, Keith G., Berry, Colin, Fearon, William F., Kala, Petr, Bocek, Otakar, Witt, Nils, De Bruyne, Bernard, Pyxaras, Stelios   +9 more
openaire   +3 more sources

The impact of tissue Doppler index E/e′ ratio on instantaneous wave-free ratio

Journal of Cardiology, 2018
The instantaneous wave-free ratio (iFR) is a vasodilator-free, invasive pressure wire index of the functional severity of coronary stenosis and is calculated under resting conditions. In a recent study, iFR was found to be more closely linked to coronary flow reserve (CFR) than fractional flow reserve (FFR).
Hiroyuki, Arashi, Junichi, Yamaguchi, Tonre, Ri, Hisao, Otsuki, Masashi, Nakao, Kazuho, Kamishima, Kentaro, Jujo, Yuichiro, Minami, Hiroshi, Ogawa, Nobuhisa, Hagiwara   +9 more
openaire   +2 more sources

Hybrid Instantaneous Wave-Free Ratio–Fractional Flow Reserve versus Fractional Flow Reserve in the Real World

Frontiers in Cardiovascular Medicine, 2017
BackgroundThe instantaneous wave-free ratio (iFR) is a novel method to assess the ischemic potential of coronary artery stenoses. Clinical trial data have shown that iFR has acceptable diagnostic agreement with fractional flow reserve (FFR), the ...
Kara Shuttleworth, Kristina Smith, Jonathan Watt, Jamie A. L. Smith, Stephen J. Leslie, Stephen J. Leslie   +5 more
doaj   +1 more source

Impact of assessment of fractional flow reserve and instantaneous wave-free ratio on clinical outcomes of percutaneous coronary intervention: a systematic review, meta-analysis and meta-regression analysis

Российский кардиологический журнал, 2023
Aim. To conduct a systematic review and meta-analysis to compare clinical outcomes in patients with coronary artery disease (CAD) undergoing percutaneous coronary intervention (PCI) using conventional coronary angiography (CAG) or fractional flow reserve
E. Z. Golukhova, K. V. Petrosian, A. V. Abrosimov, N. I. Bulaeva, E. S. Goncharova, B. Sh. Berdibekov   +5 more
doaj   +1 more source

Semileptonic and Rare $B$-meson transitions in a QCD relativistic potential model [PDF]

, 1998
Using a QCD relativistic potential model, previously applied to the calculation of the heavy meson leptonic constants, we evaluate the form factors governing the exclusive decays $B\to\rho\ell\nu$, $B\to K^*\gamma$ and $B\to K^*\ell^+\ell^-$.
Colangelo, P., De Fazio, F., Ladisa, M., Nardulli, G., Santorelli, P., Tricarico, A.   +5 more
core   +2 more sources

A baseline-free damage detection approach based on distance compensation of guided waves

Journal of Low Frequency Noise, Vibration and Active Control, 2019
The baseline signal in structural inspection based on guided waves is difficult to be obtained under varying environmental conditions. To guarantee the precision of damage identification, developing baseline-free damage detection methods is significant ...
Jianxi Qiu, Fucai Li, Saqlain Abbas, Yanping Zhu   +3 more
doaj   +1 more source

TCT-151 Instantaneous Wave-Free Ratio/Fractional Flow Reserve Discordance: Is The ‘Wave-Free Period’ Truly ‘Wave-Free'?

Journal of the American College of Cardiology, 2018
Instantaneous wave-free ratio (iFR) and Fractional Flow Reserve (FFR) are the most used physiologic indices in coronary artery disease (CAD) assessment. iFR and FFR are discordant in up to a fifth of cases.
Mark Mills, Sadman Chowdhury, Bhavik Modi, Haseeb Rahman, Matthew Ryan, Howard Ellis, Divaka Perera   +6 more
openaire   +1 more source

Comparison between three-dimensional linear and nonlinear tsunami generation models [PDF]

, 2006
The modeling of tsunami generation is an essential phase in understanding tsunamis. For tsunamis generated by underwater earthquakes, it involves the modeling of the sea bottom motion as well as the resulting motion of the water above it.
A. Ben-Menahem, C. Fochesato, C.E. Synolakis, D. Dutykh, D.H. Peregrine, Denys Dutykh, E.A. Kulikov, E.L. Geist, E.O. Tuck, F. Ursell, F.I. González, Frédéric Dias, G. Wei, J.-M. Ghidaglia, J.-M. Ghidaglia, J.L. Bona, J.L. Bona, J.L. Hammack, J.L. Hammack, K. Kajiura, L.N.G. Filon, M. Guesmia, M. Villeneuve, M.I. Todorovska, M.I. Todorovska, O. Nwogu, R.J. LeVeque, S. Grilli, S. Grilli, S.N. Ward, V.V. Titov, Y. Okada, Youen Kervella   +32 more
core   +3 more sources

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source