Electrical impedance cardiography using artificial neural networks.

abstract：:Typical inverse dynamics approaches to the calculation of muscle, ligament, and joint contact forces are based on a step-wise solution of the equations of motion. This approach is therefore limited in its ability to provide insight as to the muscular, ligamentous, and articular interactions that create joint stability...

journal_title：Annals of biomedical engineering

authors： Cleather DJ,Bull AM

更新日期：2011-07-01 00:00:00

abstract：:In this study various blood rheological assumptions are numerically investigated for the hemodynamic properties of intra-stent flow. Non-newtonian blood properties have never been implemented in blood coronary stented flow investigation, although its effects appear essential for a correct estimation and distribution o...

journal_title：Annals of biomedical engineering

authors： Benard N,Perrault R,Coisne D

更新日期：2006-08-01 00:00:00

abstract：:The induction of angiogenesis is a promising therapeutic strategy for the amelioration of peripheral arterial disease (PAD). This occlusive disease results in muscle ischemia, and neovascularization is a route to increasing the perfusion in the tissue. The vascular endothelial growth factor (VEGF) family of potent pro...

journal_title：Annals of biomedical engineering

authors： Mac Gabhann F,Ji JW,Popel AS

更新日期：2007-06-01 00:00:00

abstract：:Although it is known that long cortical bone structurally alter their area moment of inertia with age related bone loss maintaining their bending strength, the incidence of fragility fractures associated with cortical thinning still prevails. We hypothesize that cortical thinning with aging increases the local bucklin...

journal_title：Annals of biomedical engineering

authors： Lee T,Choi JB,Schafer BW,Segars WP,Eckstein F,Kuhn V,Beck TJ

更新日期：2009-09-01 00:00:00

abstract：:Overexpressed receptors, characteristic of many cancers, have been targeted by various researchers to achieve a more specific treatment for cancer. A common approach is to use the natural ligand for the overexpressed receptor as a cancer-targeting agent which can deliver a chemically or genetically conjugated toxic mo...

journal_title：Annals of biomedical engineering

authors： Yoon DJ,Liu CT,Quinlan DS,Nafisi PM,Kamei DT

更新日期：2011-04-01 00:00:00

abstract：:In this paper, we present the application of a semi-global inverse method for determining material parameters of biological tissues. The approach is based on the successive response surface method, and is illustrated by fitting constitutive parameters to two nonlinear anisotropic constitutive equations, one for aortic...

journal_title：Annals of biomedical engineering

authors： Einstein DR,Freed AD,Stander N,Fata B,Vesely I

更新日期：2005-12-01 00:00:00

abstract：:Cell migration is a fundamental process that is crucial to a variety of physiological events. While traditional approaches have focused on two-dimensional (2D) systems, recent efforts have shifted to studying migration in three-dimensional (3D) matrices. A major distinction that has emerged is the increased importance...

journal_title：Annals of biomedical engineering

authors： Harjanto D,Zaman MH

更新日期：2010-05-01 00:00:00

abstract：:This study was undertaken to investigate the possible origin of some cutaneously recorded higher frequency electrogastrographic signals. Computer modeling of gastric electrical uncoupling was performed using previously described conoidal dipole model. Cutaneous electrogastrograms were simulated after uncoupling was in...

journal_title：Annals of biomedical engineering

authors： Mintchev MP,Bowes KL

更新日期：1997-11-01 00:00:00

abstract：:A coculture of endothelial cells (ECs) and smooth muscle cells (SMCs), which mimics cellular interactions appearing in vivo, has been performed in studies on the relationship between atherogenesis and fluid shear stress conditions. Although healthy arteries in vivo consist of contractile phenotype SMCs, cultured cells...

journal_title：Annals of biomedical engineering

authors： Sakamoto N,Kiuchi T,Sato M

更新日期：2011-11-01 00:00:00

abstract：:The neutrophil has developed into one of the most efficient vertebrate motile cells. It migrates through tissues, where it encounters multiple chemoattractant signals with complex spatial and temporal characteristics. The directional movement of the neutrophil is signaled by the binding of chemoattractants and chemoki...

journal_title：Annals of biomedical engineering

authors： Zhelev DV,Alteraifi A

更新日期：2002-03-01 00:00:00

abstract：:Mechanical interactions during angiogenesis, i.e., traction applied by neovessels to the extracellular matrix and the corresponding deformation, are important regulators of growth and neovascularization. We have previously designed, implemented, and validated a coupled model of angiogenesis in which a discrete microve...

journal_title：Annals of biomedical engineering

authors： Edgar LT,Hoying JB,Weiss JA

更新日期：2015-07-01 00:00:00

abstract：:A comparison was made between turbulence calculated by subtracting an ensemble average from the instantaneous velocity and calculations made with a high pass digital filter. Velocity was measured with a laser Doppler anemometer in vitro in the region of a normal porcine aortic valve and in patients with a hot film ane...

journal_title：Annals of biomedical engineering

authors： Walburn FJ,Sabbah HN,Stein PD

更新日期：1983-01-01 00:00:00

abstract：:The pulmonary microvasculature offers a heterogeneous barrier to the motion of large solutes as they pass between blood and lymph. While this barrier has been approximated by a few discrete pathways or by statistical ensembles of many pathways, these descriptions only partly capture the structural and functional prope...

journal_title：Annals of biomedical engineering

authors： McNamee JE

更新日期：1990-01-01 00:00:00

abstract：:It would often be desirable to obtain the respiratory rate during everyday conditions without obtaining an additional respiratory trace. This study investigates the agreement between respiratory rate assessed from the electrocardiogram (ECG) and the reference respiratory rate derived from a nasal/oral airflow (AF). Na...

journal_title：Annals of biomedical engineering

authors： Cysarz D,Zerm R,Bettermann H,Frühwirth M,Moser M,Kröz M

更新日期：2008-12-01 00:00:00

abstract：:The field of percutaneous coronary intervention has witnessed many progressions over the last few decades, more recently with the advancement of fully degradable bioabsorbable stents. Bioabsorbable materials, such as metallic alloys and aliphatic polyesters, have the potential to yield stents which provide temporary s...

journal_title：Annals of biomedical engineering

authors： Boland EL,Shine R,Kelly N,Sweeney CA,McHugh PE

更新日期：2016-02-01 00:00:00

abstract：:While viscoelastic responses of isolated trunk soft tissues have been characterized in earlier studies, the effects of external loading and flexion rate on these responses in the intact human trunk are largely unknown. Two experiments were conducted to measure trunk viscoelastic behaviors, one involving prolonged flex...

journal_title：Annals of biomedical engineering

authors： Toosizadeh N,Nussbaum MA

更新日期：2013-06-01 00:00:00

abstract：:The aim of this study was to develop an empirical model of parameter-based gait data, based on an artificial neural network and a genetic algorithm, for the assessment of patients after ankle arthrodesis. Ground reaction force vectors were measured by force platforms during level walking. Nine force parameters express...

journal_title：Annals of biomedical engineering

authors： Wu WL,Su FC,Cheng YM,Chou YL

更新日期：2001-01-01 00:00:00

abstract：:Current induced in cultured cerebellar granule cells by the bath application of kainate (500 microM) was measured using the conventional patch-clamp technique. Two different kinds of responses were observed after the agonist perfusion. Some cells exhibited small inward whole-cell currents: 116 +/- 40 pA (7 cells) at a...

journal_title：Annals of biomedical engineering

authors： Cavalcanti S,Zona C

更新日期：1997-05-01 00:00:00

abstract：:Intramuscular pressure (IMP), defined as skeletal muscle interstitial fluid pressure, reflects changes in individual muscle tension and may provide crucial insight into musculoskeletal biomechanics and pathologies. IMP may be measured using fiber-optic fluid pressure sensors, provided the sensor is adequately anchored...

journal_title：Annals of biomedical engineering

authors： Go SA,Jensen ER,O'Connor SM,Evertz LQ,Morrow DA,Ward SR,Lieber RL,Kaufman KR

更新日期：2017-03-01 00:00:00

abstract：:The strength between the cortical screw and bone following an orthopaedic implant surgery is an important determinant for the success of osteosynthesis. An excessive axial cutting force during drilling produces microcracks in the bone surface, resulting in reduced strength between the screw and bone, resulting in loos...

journal_title：Annals of biomedical engineering

authors： Singh RP,Gupta V,Pandey PM,Mridha AR

更新日期：2021-01-01 00:00:00

abstract：:In this paper, we aim to establish a new mathematical model that relates pulse wave velocity (PWV) to blood pressure (BP) for continuous and noninvasive BP measurement. For the first time, we derive an ordinary differential equation (ODE) expressing the fundamental relation between BP, elastic modulus G and PWV. The g...

journal_title：Annals of biomedical engineering

authors： Chen Y,Wen C,Tao G,Bi M,Li G

更新日期：2009-11-01 00:00:00

abstract：:Bone loss during long-term space flight is potentially a significant problem. Bone mineral density measurements show that bone is lost at a rate of about 1% per month from the lumbar spine, and 1.5% per month from the hip. Bone density changes are not uniform throughout the skeleton, and there is accumulating evidence...

journal_title：Annals of biomedical engineering

authors： McCarthy ID

更新日期：2005-01-01 00:00:00

abstract：:Optoelectronic plethysmography (OEP) is a noninvasive method for assessing lung volume variations and the contributions of different anatomical compartments of the chest wall (CW) through measurements of the motion of markers attached to the CW surface. The present study proposes a new method for analyzing the local C...

journal_title：Annals of biomedical engineering

authors： Solav D,Meric H,Rubin MB,Pradon D,Lofaso F,Wolf A

更新日期：2017-08-01 00:00:00

abstract：:One of the major functions of the cardiovascular system is to deliver blood to the microcirculation where exchange of mass and energy can take place. In the present article, we will provide an overview of the state-of-the-art computational methods for modeling of red blood cell (RBC) rheology and dynamics in the micro...

journal_title：Annals of biomedical engineering

authors： Cristini V,Kassab GS

更新日期：2005-12-01 00:00:00

abstract：:Cumulative exposure to head impacts during contact sports can elicit potentially deleterious brain white matter alterations in young athletes. Head impact exposure is commonly quantified using wearable sensors; however, these sensors tend to overestimate the number of true head impacts that occur and may obfuscate pot...

journal_title：Annals of biomedical engineering

authors： DiCesare CA,Green B,Yuan W,Diekfuss JA,Barber Foss KD,Dudley J,Qin Y,Wang P,Myer GD

更新日期：2020-12-01 00:00:00

abstract：:Recent evidence suggests that energy substrate metabolism forms the link between gene expression and contractile function of the heart. This hypothesis draws on three seemingly unconnected observations, made in 1941 by three different investigators. The first gave rise to the concept of the dynamic nature of body cons...

journal_title：Annals of biomedical engineering

authors： Taegtmeyer H

更新日期：2000-08-01 00:00:00

abstract：:Wall stress analysis of abdominal aortic aneurysm (AAA) is a promising method of identifying AAAs at high risk of rupture. However, neglecting residual strains (RS) in the load-free configuration of patient-specific finite element analysis models is a sever limitation that strongly affects the computed wall stresses. ...

journal_title：Annals of biomedical engineering

authors： Polzer S,Bursa J,Gasser TC,Staffa R,Vlachovsky R

更新日期：2013-07-01 00:00:00

abstract：:Cell migration paths of mammary epithelial cells (expressing different versions of the promigratory tyrosine kinase receptor Her2/Neu) were analyzed within a bimodal framework that is a generalization of the run-and-tumble description applicable to bacterial migration. The mammalian cell trajectories were segregated i...

journal_title：Annals of biomedical engineering

authors： Potdar AA,Lu J,Jeon J,Weaver AM,Cummings PT

更新日期：2009-01-01 00:00:00

abstract：:Ever-increasing demand for bone grafts necessitates the realization of clinical implementation of bone tissue engineered constructs. The predominant hurdle to implementation remains to be securing FDA approval, based on the lack of viable methods for the rigorous monitoring of said constructs. The study presented here...

journal_title：Annals of biomedical engineering

authors： Simmons AD,Sikavitsas VI

更新日期：2018-01-01 00:00:00

abstract：:In uniaxial tensile testing, load preconditioning is used to generate repeatable load/elongation curves and set a "reference state" for subsequent tensile tests. We have observed however, that for porcine aortic valve (PAV) tissues, preconditioning does not lead to repeatable stress relaxation curves. We thus investig...

journal_title：Annals of biomedical engineering

authors： Carew EO,Garg A,Barber JE,Vesely I

更新日期：2004-04-01 00:00:00