نتایج جستجو برای: Flexible arterial wall

تعداد نتایج: 402468  

The analysis of solute and thermal dispersion in pulsatile flow through the stenotic tapered blood vessel is presented. The present problem is an extension of the work done by Ramana et al. who considered the time-invariant arterial wall. In the present model, the flexible nature of the arterial wall through the obstruction (called stenosis) is considered and it is achieved with the he...

Journal: :iranian journal of medical physics 0
s. rahgozar m.sc. in mechanical engineering, mechanical engineering dept., kashan university, kashan, iran. m. maerefat assistant professor, mechanical engineering dept., tarbiat modarres university, tehran, iran. m. mokhtari-dizaji associate professor, medical physics dept., tarbiat modarres university, tehran, iran.

introduction: arterial stiffness is an important predictor of cardiovascular risk. several indices have been  introduced to estimate the arterial stiffness based on the changes in the brachial blood pressure. since the  substitution  of  the  blood  pressure  changes  in  the  central  arteries  such  as  carotid  with  the  blood  pressure  changes in the brachial results in error in the blood...

Journal: :iranian journal of medical physics 0
alireza rowhanimanesh department of electrical engineering, center of excellence on soft computing and intelligent information processing (sciip), ferdowsi university of mashhad, mashhad, iran.

introduction this paper proposes the concept of autonomous drug-encapsulated nanoparticle (adenp) as a novel non-invasive approach to prevent atherosclerosis. adenp consists of three simple units of sensor, controller (computing), and actuator. the hardware complexity of adenp is much lower than most of the nanorobots, while the performance is maintained by the synergism in the swarm architectu...

Alain Tedgui, François Tronc, Stephanie Lehoux,

Chronic increases in arterial blood flow elicit an adaptive response of the arterial wall, leading to vessel enlargement and reduction in wall shear stress to physiological baseline value. Release of nitric oxide from endothelial cells exposed to excessive shear is a fundamental step in the remodeling process, and potentially triggers a cascade of events, including growth factor induction and m...

Alireza Rowhanimanesh, Mohammad Reza Akbarzadeh Totonchi

Introduction This paper proposes the concept of autonomous drug-encapsulated nanoparticle (ADENP) as a novel non-invasive approach to prevent atherosclerosis. ADENP consists of three simple units of sensor, controller (computing), and actuator. The hardware complexity of ADENP is much lower than most of the nanorobots, while the performance is maintained by the synergism in the swarm architectu...

Journal: :Biomechanics and modeling in mechanobiology 2010
Y Bazilevs M-C Hsu Y Zhang W Wang T Kvamsdal S Hentschel J G Isaksen

A computational vascular fluid-structure interaction framework for the simulation of patient-specific cerebral aneurysm configurations is presented. A new approach for the computation of the blood vessel tissue prestress is also described. Simulations of four patient-specific models are carried out, and quantities of hemodynamic interest such as wall shear stress and wall tension are studied to...

M. Maerefat M. Mokhtari-Dizaji S. Rahgozar

Introduction: Arterial stiffness is an important predictor of cardiovascular risk. Several indices have been  introduced to estimate the arterial stiffness based on the changes in the brachial blood pressure. Since the  substitution  of  the  blood  pressure  changes  in  the  central  arteries  such  as  carotid  with  the  blood  pressure  changes in the brachial results in error in the blood...

ژورنال: دانشور پزشکی 2009
رهگذر, سعید , مختاری‌دیزجی, دکتر منیژه , معرفت, دکتر مهدی ,

  Background & Objective : Several indices have been introduced to estimate arterial stiffness that based on changes in brachial blood pressure. But because of the error resulted by the substitution of brachial blood pressure instead of the other central arteries, such as carotid, it will be very important to present elastic parameter based on the mechanical models without any emphasis on brach...

Journal: :Perspectives in Medicine 2012

Journal: :Japanese Circulation Journal 1997

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