نتایج جستجو برای: fractional flow reserve
تعداد نتایج: 563105 فیلتر نتایج به سال:
The purpose of this paper is to investigate the source of fractional reserve banking and to review the literature on bank credit. Evaluating the operational procedure of this banking model demonstrates a new concept of credit money shaping aspect and its affect on the practical economy. The difference in due dates between depositing and receiving loan that causes Ex-nihio money to exist, the ef...
Recent advances in image-based modeling and computational fluid dynamics permit the calculation of coronary artery pressure and flow from typically acquired coronary computed tomography (CT) scans. Computed fractional flow reserve is the ratio of mean coronary artery pressure divided by mean aortic pressure under conditions of simulated maximal coronary hyperemia, thus providing a noninvasive e...
OBJECTIVES AND BACKGROUND Functional assessment of coronary lesion severity during cardiac catheterization is conducted using diagnostic parameters like fractional flow reserve (FFR; pressure derived) and coronary flow reserve (CFR; flow derived). However, the complex hemodynamics of stenosis might not be sufficiently explained by either pressure or flow alone, particularly in the case of inter...
The present study aims to investigate the effects of monetary and financial shocks on macroeconomic variables in fractional and full reserve banking conditions. To this end, two stochastic dynamic general equilibrium models have been designed in terms of the realities of Iran's economy and then the effects of shocks have been studied. After determining the input values of the model and estima...
AIMS The present study aims to compare the change of left ventricular deformation during dobutamine stress echocardiography (DSE) with the reference standard of invasive myocardial fractional flow reserve (FFR) to assess the haemodynamic significance of intermediate coronary lesions. METHODS AND RESULTS In 30 patients with an intermediate coronary artery stenosis in one epicardial coronary ar...
Although a relationship between the coronary pressure-derived fractional flow reserve (FFR) and the presence of myocardial ischemia as demonstrated by radionuclide imaging has been reported in a select group of patients, it remains to be established whether this relation also holds true in actual clinical settings with a heterogeneous group of patients. Accordingly, 194 coronary vessels and the...
OBJECTIVES The aim of this study was to develop a computer model that accurately predicts myocardial fractional flow reserve (FFR) from angiographic images alone, in patients with coronary artery disease. BACKGROUND Percutaneous coronary intervention (PCI) guided by FFR is superior to standard assessment alone. FFR-guided PCI results in improved clinical outcomes, a reduction in the number of...
BACKGROUND After regular coronary balloon angioplasty, it would be helpful to identify those patients who have a low cardiac event rate. Coronary angiography alone is not sensitive enough for that purpose, but it has been suggested that the combination of optimal angiographic and optimal functional results indicates a low restenosis chance. Pressure-derived myocardial fractional flow reserve (F...
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