Results 31 to 40 of about 3,607,366 (207)

Overview of Quantitative Flow Ratio and Optical Flow Ratio in the Assessment of Intermediate Coronary Lesions

US Cardiology Review, 2020
Fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) improves clinical outcome compared with angiography-guided PCI. Advances in computational technology have resulted in the development of solutions, enabling fast derivation of ...
Jelmer Westra, Shengxian Tu
doaj   +1 more source

Diagnostic Accuracy of Diastolic Fractional Flow Reserve for Functional Evaluation of Coronary Stenosis

JACC: Asia, 2021
Background: In the resting conditions, narrowing the window of coronary pressure measurements from the whole cardiac cycle to diastole improves diagnostic performance of coronary pressure–derived physiological index. However, whether this also applies to
Yasutsugu Shiono, MD, Hitoshi Matsuo, MD, Hiroshi Fujita, MD, Nobuhiro Tanaka, MD, Yasuo Ogasawara, PhD, Itta Kawamura, MD, Yosuke Katayama, MD, Akiko Matsuo, MD, Yoshiaki Kawase, MD, Tsunekazu Kakuta, MD, Hiroaki Takashima, MD, Hiroyoshi Yokoi, MD, Hiroshi Ohira, MD, Satoru Suwa, MD, Mitsutoshi Oguri, MD, Fumi Yamamoto, MD, Takashi Kubo, MD, Takashi Akasaka, MD, Y. Shiono, Y. Katayama, K. Hironori, T. Kubo, T. Akasaka, N. Tanaka, J. Yamashita, H. Fujita, A. Matsuo, H. Matsuo, Y. Kawase, I. Kawamura, T. Kakuta, M. Hoshino, T. Sugano, H. Takashima, T. Amano, H. Yokoi, Y. Yamamoto, Y. Nozaki, M. Machida, M. Kobori, T. Kikuchi, H. Ohira, H. Yoshino, H. Ishiguro, Y. Wakabayashi, T. Kondo, H. Terai, T. Suwa, T. Kimura, T. Kawajiri, A. Hirohata, S. Uemura, Y. Neishi, T. Sakamoto, M. Yamada, K. Okeie, K. Hishikari, M. Oguri, T. Uetani, T. Saegusa, F. Yamamoto, M. Yamada   +61 more
doaj   +1 more source

The role of coronary flow reserve (CFR) and fractional flow reserve (FFR) in acute coronary syndrome - systematic review

Bulletin of the Academy of Sciences of Moldova. Medical Sciences, 2022
The methods used to appreciate the degree of coronary stenosis such as CFR and FFR, come to complement the coronary angiography and help the interventional physician during PCI. Furthermore, CFR and FFR measured immediately after reperfusion, in patients with ACS, may act as a prognosis factor for myocardial infarction.Changes in coronary ...
Dumitru Tarita, Tatiana Danila, Lucia Ciobanu, Ion Popovici   +3 more
openaire   +1 more source

Validation of Quantitative Flow Ratio-Derived Virtual Angioplasty with Post-Angioplasty Fractional Flow Reserve—The QIMERA-I Study

Journal of Cardiovascular Development and Disease, 2023
Background: Quantitative flow ratio (QFR) virtual angioplasty with pre-PCI residual QFR showed better results compared with an angiographic approach to assess post-PCI functional results.
Ignacio J. Amat-Santos, Giorgio Marengo, Juan Pablo Sánchez-Luna, Carlos Cortés Villar, Fernando Rivero Crespo, Víctor Alfonso Jiménez Díaz, José María de la Torre Hernández, Armando Pérez de Prado, Manel Sabaté, Ramón López-Palop, José Miguel Vegas Valle, Javier Suárez de Lezo, Clara Fernandez Cordon, Jose Carlos Gonzalez, Mario García-Gómez, Alfredo Redondo, Manuel Carrasco Moraleja, J. Alberto San Román   +17 more
doaj   +1 more source

Extent of the difference between microcatheter and pressure wire-derived fractional flow reserve and its relation to optical coherence tomography-derived parameters

International Journal of Cardiology: Heart & Vasculature, 2020
Background: Although previous studies demonstrated that microcatheter-derived fractional flow reserve (mc-FFR) tends to overestimate lesion severity compared to pressure wire-derived FFR (pw-FFR), the clinical utility of mc-FFR remains obscure.
Yoshiki Matsuo, Yasutsugu Shiono, Kuninobu Kashiyama, Yasushi Ino, Takahiro Nishi, Kosei Terada, Hiroki Emori, Daisuke Higashioka, Yosuke Katayama, Amir Khalifa Mahfouz, Teruaki Wada, Suwako Fujita, Masahiro Takahata, Kunihiro Shimamura, Manabu Kashiwagi, Akio Kuroi, Atsushi Tanaka, Takeshi Hozumi, Takashi Kubo, Takashi Akasaka   +19 more
doaj   +1 more source

Fractional Flow Reserve or Coronary Flow Reserve for the Assessment of Myocardial Perfusion [PDF]

Current Cardiology Reports, 2018
Accumulating evidence exists for the value of coronary physiology for clinical decision-making in ischemic heart disease (IHD). The most frequently used pressure-derived index to assess stenosis severity, the fractional flow reserve (FFR), has long been considered the gold standard for this purpose, despite the fact that the FFR assesses solely ...
Stegehuis, Valérie E., Wijntjens, Gilbert W., Piek, Jan J., van de Hoef, Tim P.   +3 more
openaire   +2 more sources

3D quantitative coronary angiography based vessel FFR: clinical evidence and future perspectives

REC: Interventional Cardiology (English Ed.), 2023
Endorsed by the current clinical practice guidelines, the indication to perform percutaneous coronary intervention (PCI) of intermediate coronary stenosis should be guided by either fractional flow reserve (FFR) or instantaneous wave-free ratio (iFR) if ...
Alessandra Scoccia, Joost Daemen
doaj   +1 more source

FRACTIONAL FLOW RESERVE (FFR)

, 2015
FFR is a form of coronary artery measurement that provides valuable information about the functional significance of coronary artery blockade. It works on a simple hemodynamic principle that the more severe the blockade, the more would be the pressure drop beyond the blockade.
Mahajan, Neeraj, Kartik Patel
openaire   +2 more sources

Comparison of FFR and corrected FFR values.

, 2023
Overall, FFR values in the anterior coronary vessels tended to increase, whereas those in the posterior coronary vessels tended to decrease after FFR correction by height difference.
Hyo Jin Lee (1536352), Jin-Yong Hwang (849405), Seung Do Lee (16877619), Jin-Sin Koh (849399), Hong-Seok Lim (2552770), Myeong-Ho Yoon (5285873), Moon-Seung Soh (16877613), Seok-Jae Hwang (849401), Min Gyu Kang (3316845), Kyehwan Kim (16877622), Jeong-Rang Park (16877625), Hye-Ree Kim (16877628), Seung-Jea Tahk (3620252), Hangyul Kim (16877616)   +13 more
core   +1 more source

Influence of reconstruction kernels on the accuracy of CT-derived fractional flow reserve [PDF]

, 2021
Objectives!#!We evaluated the influence of image reconstruction kernels on the diagnostic accuracy of CT-derived fractional flow reserve (FFR!##!Methods!#!Sixty-nine patients, in whom coronary CT angiography was performed and who were further referred ...
Marwan, Mohamed, Smolka, Silvia, Bittner, Daniel O., Ammon, Fabian, Goeller, Markus, Moshage, Maximilian, Achenbach, Stephan   +6 more
core   +1 more source