Influence of autoregressive model parameter uncertainty on spectral estimates of heart rate dynamics.

abstract：:The epidermal growth factor (EGF) is a growth factor with effects on many cell types and tissue. Morphometric and passive biomechanical properties were studied in isolated segments of the esophagus in 22 EGF-treated rats and 12 control rats. The rats were divided into groups with EGF treatment for 2, 4, 7, and 14 days...

journal_title：Annals of biomedical engineering

authors： Zhao J,Yang J,Vinter-Jensen L,Zhuang F,Gregersen H

更新日期：2003-06-01 00:00:00

abstract：:Quantifying injury tolerance for concussion is complicated by variability in the type, severity, and time course of post-injury physiological and behavioral changes. The current study outlined acute and chronic changes in behavioral metrics following rotational acceleration-induced concussion in rats. The Medical Coll...

journal_title：Annals of biomedical engineering

authors： Stemper BD,Shah AS,Chiariello R,Olsen CM,Budde MD,Glavaski-Joksimovic A,McCrea M,Kurpad SN,Pintar FA

更新日期：2016-11-01 00:00:00

abstract：:Knowledge of strain-rate sensitivity of soft tissue viscoelastic and nonlinear elastic properties is important for accurate predictions of biomechanical behavior and for quantitative assessment of the effects of disease or surgical/pharmaceutical intervention. Soft tissues are known to exhibit mild rate sensitivity, b...

journal_title：Annals of biomedical engineering

authors： Doehring TC,Carew EO,Vesely I

更新日期：2004-02-01 00:00:00

abstract：:This study aimed to quantify the elongation patterns of the collateral ligaments following TKA during functional activities of daily living. Using mobile video-fluoroscopy to capture radiographic images of the knee in a group of six patients, each with an ultra-congruent knee implant, tibiofemoral kinematics were reco...

journal_title：Annals of biomedical engineering

authors： Hosseini Nasab SH,Smith CR,Schütz P,Damm P,Trepczynski A,List R,Taylor WR

更新日期：2020-04-01 00:00:00

abstract：:This is a personal historical essay on meanderings through the jungle of the microcirculatory swamp. Because one pretends that the wandering was purposefully exploratory, a few guideposts are placed at positions where one could discern blaze-marks from earlier wanderers, and the path cut a little wider along some of t...

journal_title：Annals of biomedical engineering

authors： Bassingthwaighte JB

更新日期：1987-01-01 00:00:00

abstract：:We present an optical non-contact method for heart beat monitoring, based on the measurement of chest wall movements induced by the pumping action of the heart, which is eligible as a surrogate of electrocardiogram (ECG) in assessing both cardiac rate and heart rate variability (HRV). The method is based on the optica...

journal_title：Annals of biomedical engineering

authors： Morbiducci U,Scalise L,De Melis M,Grigioni M

更新日期：2007-01-01 00:00:00

abstract：:This paper outlines a comprehensive parametric approach for quantifying mechanical properties of spatially heterogeneous thin biological specimens such as human breast tissue using contact-mode Atomic Force Microscopy. Using inverse finite element (FE) analysis of spherical nanoindentation, the force response from hyp...

journal_title：Annals of biomedical engineering

authors： Roy R,Desai JP

更新日期：2014-09-01 00:00:00

abstract：:We have studied the interaction of high frequency jet ventilation with cardiovascular pressures and flows. Results in dogs show that the amplitude of all intrathoracic pressures and flows fluctuate with a frequency equal to the difference between the heart rate and ventilator rate. The magnitude of this amplitude vari...

journal_title：Annals of biomedical engineering

authors： Mitzner W,Gioia F,Weinmann GG,Robotham JL,Ehrlich W

更新日期：1987-01-01 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：:The aim of this study was to establish in vitro bench-tests of left atrial appendage occlusion (LAAo) devices regarding tug force, radial force and sealing capacity. Two LAAo devices, namely the WATCHMAN™ and the Occlutech®, of three different sizes underwent testing in novel dedicated in vitro setups. Radial force wa...

journal_title：Annals of biomedical engineering

authors： Menne MF,Schrickel JW,Nickenig G,Al-Kassou B,Nelles D,Schmitz-Rode T,Steinseifer U,Sedaghat A

更新日期：2018-09-01 00:00:00

abstract：:Poor vascular homeostasis drives many clinical disorders including diabetes, arthritis, atherosclerosis, and peripheral artery disease. Local tissue ischemia resultant of insufficient blood flow is a potent stimulus for recruitment of endothelial progenitor cells (EPCs). This mobilization and homing is a multi-step pr...

journal_title：Annals of biomedical engineering

authors： Williams PA,Silva EA

更新日期：2015-10-01 00:00:00

abstract：:Functional electrical stimulation (FES) to lower extremity (LE) muscles is used by individuals post-stroke as an alternative to mechanical orthotic devices during gait or as a training modality during rehabilitation. Technological developments which improve the feasibility, accessibility and effectiveness of FES syste...

journal_title：Annals of biomedical engineering

authors： Kafri M,Laufer Y

更新日期：2015-02-01 00:00:00

abstract：:Modern models of cardiac membranes are often highly complex and computationally expensive, particularly when used in long simulations of spatially extended models of cardiac tissue. Therefore, there is a need for simpler membrane models that preserve the features of the complex models deemed important. This communicat...

journal_title：Annals of biomedical engineering

authors： Oliver RA,Krassowska W

更新日期：2005-07-01 00:00:00

abstract：:We develop a mathematical model of nanoparticles depositing onto and penetrating into a biofilm grown in a parallel-plate flow cell. We carry out deposition experiments in a flow cell to support the modeling. The modeling and the experiments are motivated by the potential use of polymer nanoparticles as part of a trea...

journal_title：Annals of biomedical engineering

authors： Miller JK,Neubig R,Clemons CB,Kreider KL,Wilber JP,Young GW,Ditto AJ,Yun YH,Milsted A,Badawy HT,Panzner MJ,Youngs WJ,Cannon CL

更新日期：2013-01-01 00:00:00

abstract：:Deformational loading represents a primary component of the chondrocyte physical environment in vivo. This review summarizes our experience with physiologic deformational loading of chondrocyte-seeded agarose hydrogels to promote development of cartilage constructs having mechanical properties matching that of the par...

journal_title：Annals of biomedical engineering

authors： Hung CT,Mauck RL,Wang CC,Lima EG,Ateshian GA

更新日期：2004-01-01 00:00:00

abstract：:Recently, we reported that tethering and rolling of neutrophils in shear flow over a substrate of E-selectin signals activation of beta 2-integrins and firm adhesion via an intracellular signaling pathway involving phosphorylation of p38 MAP kinase. In the current study the objective was to examine the molecular mecha...

journal_title：Annals of biomedical engineering

authors： Hentzen E,McDonough D,McIntire L,Smith CW,Goldsmith HL,Simon SI

更新日期：2002-09-01 00:00:00

abstract：:The influence of scaffold compliance on blood vessel tissue engineering remains unclear and compliance mismatch issues are important to an in vivo tissue-engineering approach. We have designed and constructed a modular bioreactor system that is capable of imparting pulsatile fluid flow while simultaneously measuring v...

journal_title：Annals of biomedical engineering

authors： Webb AR,Macrie BD,Ray AS,Russo JE,Siegel AM,Glucksberg MR,Ameer GA

更新日期：2007-08-01 00:00:00

abstract：:Millions of people worldwide are diagnosed each year with valvular heart disease, resulting in hundreds of thousands of valve replacement operations. Prosthetic valve replacements are designed to correct narrowing or backflow through the valvular orifice. Although commonly used, these therapies have serious disadvanta...

journal_title：Annals of biomedical engineering

authors： Berry JL,Steen JA,Koudy Williams J,Jordan JE,Atala A,Yoo JJ

更新日期：2010-11-01 00:00:00

abstract：:For the esophageal contractile activity recorded during swallowing, a feature extraction scheme has been developed. It recognizes the time, duration, and amplitudes of local peaks for each peristaltic wave. The method is based on the Tauberian approximation for modeling waveforms as a sum of identically shaped pulses ...

journal_title：Annals of biomedical engineering

authors： Abou-Chadi FE,Ezzat FA,Gad-Elhak N,Sif el-Din AA

更新日期：1993-03-01 00:00:00

abstract：:Intramuscular pressure (IMP) shows promise for estimating individual muscle tension in vivo. However, previous pressure measurements show high variability during isometric contraction and poor correlation with tension during dynamic contraction. We hypothesized that enhanced sensor anchoring/orientation would improve ...

journal_title：Annals of biomedical engineering

authors： O'Connor SM,Kaufman KR,Ward SR,Lieber RL

更新日期：2021-02-01 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：:Previous research in cellular adhesion has focused primarily on studying isolated cells under conditions where cells do not interact with each other. However, in vivo cells form sheets where both cell-substratum and cell-cell interactions contribute to the overall adhesive behavior. Our understanding of how cell-cell ...

journal_title：Annals of biomedical engineering

authors： Peel MM,DiMilla PA

更新日期：1999-03-01 00:00:00

abstract：:Early intervention programs aim at improving cognitive and motor outcomes of preterm infants. Intensive custom-tailored training activities are usually accompanied by assessment procedures, which have shortcomings, such as subjectivity, complex setups, and need for structured environments. A novel sensorized system, c...

journal_title：Annals of biomedical engineering

authors： Rihar A,Sgandurra G,Beani E,Cecchi F,Pašič J,Cioni G,Dario P,Mihelj M,Munih M

更新日期：2016-12-01 00:00:00

abstract：:Human stem cells hold significant potential for the treatment of various diseases. However, their use as a therapy is hampered because of limited understanding of the mechanisms by which they respond to environmental stimuli. Efforts to understand extracellular biophysical cues have demonstrated the critical roles of ...

journal_title：Annals of biomedical engineering

authors： Piroli ME,Jabbarzadeh E

更新日期：2018-06-01 00:00:00

abstract：:Experimental and diagnostic procedures like distension of a balloon catheter, bougie, and esophagogastroduodenoscopy can induce shear deformation in the esophageal wall. However, the shear modulus of the esophagus is yet unknown. The aim of this study was to determine the esophageal shear modulus and its dependence on...

journal_title：Annals of biomedical engineering

authors： Yang J,Liao D,Zhao J,Gregersen H

更新日期：2004-09-01 00:00:00

abstract：:Continuous flow left ventricular devices (CF-LVADs) support the failing heart at a constant speed and alters the loads on the aortic valve. This may cause insufficiency in the aortic valve under long-term CF-LVAD support. The aim of this study is to assess the aortic valve function under varying speed CF-LVAD support....

journal_title：Annals of biomedical engineering

authors： Bozkurt S,van de Vosse FN,Rutten MC

更新日期：2015-08-01 00:00:00

abstract：:An algorithm to track a rat swimming in a Morris Water Maze has been developed. The system is automatically configured to any pool and relative suitable light conditions. It tracks the rat's position and head pose 10 times per second. The output data is displayed in a bitmap and also in a text file. The system was tes...

journal_title：Annals of biomedical engineering

authors： Hval ES,Barrett SF,Wilcox M,Bailey TA

更新日期：2004-08-01 00:00:00

abstract：:The development of prevention strategies is critical to address the rising prevalence of sport-related concussions. Visual and sensory performance may influence an individual's ability to interpret environmental cues, anticipate opponents' actions, and create appropriate motor responses limiting the severity of an imp...

journal_title：Annals of biomedical engineering

authors： Harpham JA,Mihalik JP,Littleton AC,Frank BS,Guskiewicz KM

更新日期：2014-01-01 00:00:00

abstract：:The left-right asymmetry in the potential amplitude on the scalp was studied in poststroke patients by using flash visual evoked potential (VEP) and a numerical two-dimensional model of the head. The left-right asymmetry of the VEP was measured in three patients after thrombosis, in one after hemorrhage, and in one he...

journal_title：Annals of biomedical engineering

authors： Abboud S,Bar L,Rosenfeld M,Ring H,Glass I

更新日期：1996-01-01 00:00:00

abstract：:Defibrillation efficacy testing is a common procedure at defibrillator implantation, with the objective to ensure that each patient receives a system with adequate shock efficacy. In this study, defibrillation shock efficacy as a function of shock energy was modeled by a dose response relationship. The frequency distr...

journal_title：Annals of biomedical engineering

authors： Smits K,Virag N

更新日期：2010-04-01 00:00:00