... and (B) the vessel level. computational fluid dynamics coronary CT angiography fractional flow reserve intermediate lesions Newton–Krylov–Schwarz algorithm Abstract Aims A new model of computational fluid dynamics (CFD)-based algorithm for coronary CT angiography (CCTA)-derived fractional flow...

... performed Computational Fluid Dynamics analysis of blood flow through the modelled structures. Blood was modelled as Newtonian fluid, using the incompressible transient solver. As the inlet boundary condition, we used the patient-specific Internal Carotid Artery blood velocity waves obtained with Doppler...

... semi-quantitatively by temperature measurements in the bench model. Lastly, a quantitative assessment was performed by 3D computational fluid dynamics, where the standard deviation and entropy ratio of the temperature over the cross-section in the coronary artery model were calculated for both...

... plaque burden. No study to date has assessed the impact of IPE on coronary physiology. Fractional flow reserve (FFR) derived from coronary computed tomography angiography (CTA) data sets (FFR_CT) applies computational fluid dynamics to calculate FFR values in epicardial coronary arteries. Our...

... recommended assessment to guide coronary interventions. Although the speed of vFFR computation has accelerated, techniques utilising full 3D computational fluid dynamics (CFD) solutions rather than simplified analytical solutions still require significant time to compute. Methods and results This study...

... a computational fluid dynamics (CFD) method for predicting flow that differentiates inlet, side branch, and outlet flows during angiography. In the current study, we evaluate a new method that regionalizes flow along the length of the artery. Methods and results Three-dimensional coronary anatomy...

...Lei Lv; Haotian Li; Zonglv Wu; Weike Zeng; Ping Hua; Songran Yang Figure 2 The process of computational fluid dynamics analysis and time-averaged wall shear stress calculation. Shortly, we first labelled the mask of aorta, containing aortic root, aortic sinus, sinotubular junction, ascending...

... atherosclerosis. All patients were symptomatic with prevalent cardiac risk factors and medication use. In particular, a high prevalence of hypertension (74%) and dyslipidaemia (74%) was observed. atherosclerosis coronary artery disease endothelial wall shear stress computational fluid dynamics coronary...

... with diseased and healthy BAV and TAV. ²⁷ In our latest endeavour, we sought to investigate the haemodynamic behaviour of blood flow in the ascending aorta before and after isolated tissue aortic valve replacement in patients with stenosed BAV and TAV. Computational fluid dynamics can analyse...

...Kwan Yong Lee; Kiyuk Chang; Joo Myung Lee; Sang-Wook Lee; Joseph Moutiris; Erica Tirr; Doralisa Morrone; Alexander Tindale; Anthony Paulo Sunjaya Figure 3 Wall shear stress and oscillatory shear index maps by computational fluid dynamics of the coronary fistula. (A) High wall shear...

...  Proximal shoulder 12 (63%) 4 (22%) 0.01  Distal shoulder 7 (37%) 14 (78%) CFD, computational fluid dynamics; HDL, high density lipoprotein; LAD, left anterior descending artery; LDL, low density lipoprotein; LCx, left circumflex artery; NSTE-ACS, non-ST-elevation acute coronary syndrome; RCA...

... a novel method that predicts absolute coronary blood flow and microvascular resistance (MVR) in the catheter laboratory. Methods and results A computational fluid dynamics (CFD) model was used to predict absolute coronary flow (Q_CFD) and coronary MVR using data from routine invasive...

... coronary angiography and computational fluid dynamics, obviating the need for a pressure-wire and hyperaemia induction. QFR might be used to guide patient selection for FFR and subsequent percutaneous coronary intervention (PCI) referral in hospitals not capable to perform FFR and PCI. We aimed...

... is structured, for in silico analysis utilizing computational fluid dynamics, and in vitro studies using also 3D printed aortic models. With the role of principal investigator or co-investigator, TARC at PSD has been participating in other several projects, including the International Registry...

... assessment and FFR_CT provide improved discrimination of ischaemia compared with stenosis assessment alone. Coronary plaque Computed tomography angiography Computational fluid dynamics Fractional flow reserve Ischaemia See page 1228 for the editorial comment on this article (doi:10.1093...

... atherosclerosis and intimal hyperplasia. The aim was to investigate the impact of competitive flow on WSS in mammary artery bypass grafts. Methods and results Using computational fluid dynamics, WSS was calculated in a left internal mammary artery (LIMA) graft to the left anterior descending artery in a three...

.... Methods: Computational fluid dynamic software was used to create models of round orifices (0·785, 1·13, 1·76, 3·14 cm ² ) at set flow rates (0·37–25 l/min). In vitro experiments were performed with round orifices (0.2, 0·95 and 1·76 cm ² ) with set flow rates (1·8–3·6 l/min...

... of computational fluid dynamics to the patient-specific anatomical three-dimensional model of the coronary tree obtained with the CCTA. As a result, CT-FFR can be computed and displayed at any point along the coronary vessels. This chapter includes practical information to help the physician using CT-FFR...