Results 191 to 200 of about 180,156 (374)

Learning Hemodynamic Scalar Fields on Coronary Artery Meshes: A Benchmark of Geometric Deep Learning Models [PDF]

arXiv
Coronary artery disease, caused by the narrowing of coronary vessels due to atherosclerosis, is the leading cause of death worldwide. The diagnostic gold standard, fractional flow reserve (FFR), measures the trans-stenotic pressure ratio during maximal vasodilation but is invasive and costly.
arxiv  

Coronary flow reserve. [PDF]

Heart, 1993
openaire   +2 more sources

Utilization of translesional hemodynamics: comparison of pressure and flow methods in stenosis assessment in patie [PDF]

, 1996
Aim of this study is the assessment of feasibility and clinical usefulness of a new index of stenosis severity, the slope of the instantaneous transstenotic pressure gradient/velocity relationship.
Feyter, P.J. (Pim) de, Gil, R. (Robert), Mario, C. (Carlo) di, Schuurbiers, J.C.H. (Johan), Serruys, P.W.J.C. (Patrick)   +4 more
core  

Pericoronary adipose tissue attenuation as a predictor of functional severity of coronary stenosis [PDF]

arXiv
Objective: This study aims to evaluate the functional significance of coronary stenosis by analyzing low-level radiomic features of the pericoronary adipose tissue (PCAT) surrounding the lesions, which are indicative of its inflammation status. Methods: A dataset of 72 patients who underwent coronary computed tomography angiography (CCTA) was analyzed,
arxiv  

Impact of coronary revascularization on coronary flow capacity measured by transthoracic Doppler echocardiography in patients with chronic coronary syndrome

Scientific Reports
Coronary flow capacity (CFC) integrates quantitative assessment of hyperemic myocardial blood flow and coronary flow reserve. We aimed to evaluate the effect of elective percutaneous coronary revascularization (PCI) on CFC using serial stress ...
Hiroki Ueno, Eisuke Usui, Masahiro Hoshino, Yoshihisa Kanaji, Tomoyo Sugiyama, Masahiro Hada, Tatsuhiro Nagamine, Yoshihiro Hanyu, Kai Nogami, Mirei Setoguchi, Kodai Sayama, Tomohiro Tahara, Kazuki Matsuda, Rika Sai, Tatsuya Sakamoto, Hikaru Shimosato, Takahiro Watanabe, Takashi Mineo, Taishi Yonetsu, Tetsuo Sasano, Tsunekazu Kakuta   +20 more
doaj   +1 more source

Validation of a new noninvasive method (contrast-enhanced transthoracic second harmonic echo Doppler) for the evaluation of coronary flow reserve Comparison with intracoronary Doppler flow wire [PDF]

OBJECTIVESWe tested the hypothesis that coronary flow reserve (CFR) in the left anterior descending coronary artery (LAD) as assessed by a new noninvasive method (contrast-enhanced transthoracic second harmonic echo Doppler) is in agreement with CFR ...
Cadeddu, Mauro, Caiati, Carlo, Iliceto, Sabino, Lai, Giorgio, Meloni, Luigi, Montaldo, Cristiana, Montisci, Roberta, Ruscazio, Massimo, Zedda, Norma   +8 more
core   +1 more source

Comparison of transesophageal doppler coronary flow reserve measurements with thallium‐201 single‐photon emission computed tomography imaging in assessment of left anterior descending artery stenoses [PDF]

, 1998
Manfred Zehetgruber, Deddo Mörtl, Gerold Porenta, Gerald Mundigler, Günter Christ, R. Lengauer, G Stix, Peter Probst, Gerald Maurer, Heinz Sochor, Peter Siostrzonek   +10 more
openalex   +1 more source

Endovascular Treatment of Malfunctioning Dialysis Fistulas: A Multicenter Retrospective Analysis Comparing Transradial and Conventional Transvenous Access

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Venous outflow is the favored access for endovascular management of dialysis fistulas. However, transradial access (TRA) offers advantages in specific clinical scenarios. The study aims to compare the efficacy, feasibility, and safety of TRA and transvenous access (TVA) in the endovascular management of malfunctioning dialysis ...
Roberto Minici, Massimo Venturini, Federico Fontana, Giuseppe Guzzardi, Federico Torre, Marco Spinetta, Andrea Coppola, Filippo Piacentino, Pasquale Guerriero, Nicola De Rosi, Biagio Apollonio, Marco Franchin, Francesco Giurazza, MGJR Research Team, Luca Brunese, Domenico Laganà   +15 more
wiley   +1 more source

Accelerated stenotic flow in the left anterior descending coronary artery explains the causes of impaired coronary flow reserve: an integrated transthoracic enhanced Doppler study. [PDF]

Front Cardiovasc Med, 2023
Caiati C, Pollice P, Iacovelli F, Sturdà F, Lepera ME.   +4 more
europepmc   +1 more source

An automated and time efficient framework for simulation of coronary blood flow under steady and pulsatile conditions [PDF]

arXiv
Fractional flow reserve (FFR) is the gold standard for diagnosing coronary artery disease (CAD). FFRCT uses computational fluid dynamics (CFD) to evaluate FFR non-invasively by simulating coronary flow in geometries reconstructed from computed tomography (CT).
arxiv