Learn More
We present experimental and computational results that describe the level, distribution, and importance of velocity fluctuations within the venous anastomosis of an arteriovenous graft. The motivation of this work is to understand better the importance of biomechanical forces in the development of intimal hyperplasia within these grafts. Steady-flow in(More)
BACKGROUND In this study, the body mass index (BMI) of Turkish population is calculated using a sample of 4205 persons consisting of 2263 male and 1942 female individuals in 2007. The study contains data from all seven geographical regions (Aegean, Black Sea, Central Anatolia, Eastern Anatolia, Marmara, Mediterranean and Southeast Anatolia) of Turkey and(More)
Coronary artery disease is still one of the most important reasons of the death in the world. The endothelium is the membrane of special cells which lines the interior surface of blood vessels forming an interface between circulating blood in the lumen and the rest of the vessel wall. Endothelial cells (ECs) line the entire circulatory system, from the(More)
Kawasaki disease (KD) affects primarily younger children and can lead to coronary artery aneurysms. The flow phenomena inside the left coronary artery and its branches with aneurysms located at various locations were studied computationally under steady flow conditions. Reynolds numbers representing the steady flow were 108, and 200 for average, and(More)
In this paper, we study optimal in vitro realization of pulsatile coronary artery flows using newly proposed closed-loop feedback algorithms with a clearly defined mathematical performance objective, and we compare several flow control device technologies in terms of their ability to generate pulsatile flow signals as accurately as possible. In the(More)
This paper presents the application of backpropagation neural networks (NN) to modeling of flow field inside in vitro arteriovenous graft-to-vein connection. The flow field was analyzed using the experimental laser Doppler method. The experimental results were used as input data for the neural networks-based modeling. Experimental studies are very time(More)
This paper presents the application of the adaptive neuro fuzzy inference system (ANFIS) to a model of the flow field inside an in vitro arteriovenous (AV) graft-to-vein connection implanted to the kidney patients. A model based on ANFIS is proposed. Its relevant steps oriented to find the optimal AV graft angle are given. The advantage of this neuro-fuzzy(More)
The purpose of this study was to investigate the relationship between the distribution of turbulence intensity and the localization of stenoses inside the venous anastomosis of arteriovenous (A-V) grafts. Turbulent flow measurements were conducted inside an upscaled end-to-side graft model under pulsatile flow condition. The pulsatile flow waveforms had(More)
  • 1