Physiological acoustic sensing based on accelerometers: a survey for mobile healthcare.

abstract：:This study evaluates the use of artificial neural networks to estimate stroke volume from pre-processed, thoracic impedance plethysmograph signals from 20 healthy subjects. Standard back-propagation was used to train the networks, with Doppler stroke volume estimates as the desired output. The trained networks were th...

journal_title：Annals of biomedical engineering

authors： Mulavara AP,Timmons WD,Nair MS,Gupta V,Kumar AA,Taylor BC

更新日期：1998-07-01 00:00:00

abstract：:Continuous gradients exist at osteochondral interfaces, which may be engineered by applying spatially patterned gradients of biological cues. In the present study, a protein-loaded microsphere-based scaffold fabrication strategy was applied to achieve spatially and temporally controlled delivery of bioactive signals i...

journal_title：Annals of biomedical engineering

authors： Dormer NH,Singh M,Wang L,Berkland CJ,Detamore MS

更新日期：2010-06-01 00:00:00

abstract：:For highly diffusive solutes the kinetics of blood-tissue exchange is only poorly represented by a model consisting of sets of independent parallel capillary-tissue units. We constructed a more realistic multicapillary network model conforming statistically to morphometric data. Flows through the tortuous paths in the...

journal_title：Annals of biomedical engineering

authors： Beard DA,Bassingthwaighte JB

更新日期：2000-03-01 00:00:00

abstract：:A progressive reduction in muscle fiber conduction velocity is typically observed during fatiguing muscle contraction. Although the exact causes of the conduction velocity decrease have not yet been fully established, increasing evidence suggests that changes in extracellular potassium concentration may be largely res...

journal_title：Annals of biomedical engineering

authors： Fortune E,Lowery MM

更新日期：2009-10-01 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：:As a human grows from birth to adulthood, both airway anatomy and breathing conditions vary, altering the deposition rate and pattern of inhaled aerosols. However, deposition studies have typically focused on adult subjects, results of which may not be readily extrapolated to children. This study numerically evaluated...

journal_title：Annals of biomedical engineering

authors： Xi J,Berlinski A,Zhou Y,Greenberg B,Ou X

更新日期：2012-12-01 00:00:00

abstract：BACKGROUND:This work explores for the first time the effects of temperature increments on the development of high shear stresses between plaque and arterial wall due to their different dilatational properties. Data from the literature report febrile reactions prior to myocardial infarction in patients with normal coron...

journal_title：Annals of biomedical engineering

authors： Guinea GV,Atienza JM,Fantidis P,Rojo FJ,Ortega A,Torres M,Gonzalez P,Elices ML,Hayashi K,Elices M

更新日期：2008-01-01 00:00:00

abstract：:Asymmetric 75% and 95% area reduction, transparent Sylgard stenotic models were operated under internal carotid artery (ICA) [Womersley parameter, alpha=5.36, Re(mean) =213 and 180, respectively, and Re(peak)=734 and 410, respectively] and left anterior descending coronary artery (LAD) flow wave forms (alpha=2.65, Re(...

journal_title：Annals of biomedical engineering

authors： Cao J,Rittgers SE

更新日期：1998-03-01 00:00:00

abstract：:A limitation of current tissue engineering vascular graft technology is the provision of an expandable, autologous cell source. By harnessing the multipotency of mesenchymal stem cells (MSC), it is hoped that functional vascular cells can be produced. To date, a range of 2D and 3D environments have been investigated f...

journal_title：Annals of biomedical engineering

authors： O'Cearbhaill ED,Murphy M,Barry F,McHugh PE,Barron V

更新日期：2010-03-01 00:00:00

abstract：:Changes in fetal magnetocardiographic (fMCG) signals are indicators for fetal body movement. We propose a novel approach to reliably extract fetal body movements based on the field strength of the fMCG signal independent of its frequency. After attenuating the maternal MCG, we use a Hilbert transform approach to ident...

journal_title：Annals of biomedical engineering

authors： Govindan RB,Vairavan S,Ulusar UD,Wilson JD,McKelvey SS,Preissl H,Eswaran H

更新日期：2011-03-01 00:00:00

abstract：:To meet demands of vascular reconstruction, there is a need for prosthetic alternatives to natural blood vessels. Here we explored a new conduit fabrication approach. Macroporous, gelatin microcarriers laden with human umbilical vein endothelial cells and aortic smooth muscle cells were dispensed into tubular agarose ...

journal_title：Annals of biomedical engineering

authors： Twal WO,Klatt SC,Harikrishnan K,Gerges E,Cooley MA,Trusk TC,Zhou B,Gabr MG,Shazly T,Lessner SM,Markwald RR,Argraves WS

更新日期：2014-07-01 00:00:00

abstract：:This paper presents the bispectral analysis of the ontogeny of the hippocampal EEG recorded from the dentate gyrus and CA1, the primary sites that generate theta (theta) rhythm. The hippocampal EEG was collected during the vigilance state of rapid eye movement (REM) sleep of freely moving rats at 15, 30 and 90 days of...

journal_title：Annals of biomedical engineering

authors： Ning T,Bronzino JD

更新日期：1998-07-01 00:00:00

abstract：:Platelet thrombosis under arterial conditions remains a large clinical problem. Previous in vitro experiments have concentrated on early adherence without thrombotic occlusion. We have developed a controllable hemodynamic system that creates intravascular thrombosis to occlusion. Lightly heparinized (3.5 USP units/mL)...

journal_title：Annals of biomedical engineering

authors： Para A,Bark D,Lin A,Ku D

更新日期：2011-07-01 00:00:00

abstract：:A role for mechanical stimulation in the control of cell fate has been proposed and mechanical conditioning of mesenchymal stem cells (MSCs) is of interest in directing MSC behavior for tissue engineering applications. This study investigates strain-induced differentiation and proliferation of MSCs, and investigates t...

journal_title：Annals of biomedical engineering

authors： Kearney EM,Farrell E,Prendergast PJ,Campbell VA

更新日期：2010-05-01 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：:Calcium phosphate ceramics have been widely used for filling bone defects to aid in the regeneration of new bone tissue. Addition of osteogenic cells to porous ceramic scaffolds may accelerate the bone repair process. This study demonstrates the feasibility of culturing marrow stromal cells (MSCs) on porous biphasic c...

journal_title：Annals of biomedical engineering

authors： Holtorf HL,Sheffield TL,Ambrose CG,Jansen JA,Mikos AG

更新日期：2005-09-01 00:00:00

abstract：:Studying human cancer from a biomechanical perspective may contribute to pathogenesis understanding which leads to the malignancy. In this study, biomechanics of suspended and adhered breast cancer cells were investigated via the micropipette aspiration method with special emphasis on comparing the cell stiffness and ...

journal_title：Annals of biomedical engineering

authors： Metsiou DN,Siatis KE,Giannopoulou E,Papachristou DJ,Kalofonos HP,Koutras A,Athanassiou G

更新日期：2019-08-01 00:00:00

abstract：:Twenty-one 3.5-month-old female Sprague-Dawley rats were randomly assigned to three groups: BTX group, in which each rat received a single intramuscular injection of 2 U of Clostridium botulinum toxin (BTX) in the quadriceps femoris muscle of the right hind limb; BTX + SR group, in which each rat received a BTX inject...

journal_title：Annals of biomedical engineering

authors： Sheng ZF,Ma YL,Tong D,Fang DY,Liang QC,Liu LH,Zhang J,Liao EY

更新日期：2012-03-01 00:00:00

abstract：:The aim of this study was to test the differentiative effects of osteoblasts after treatment with a static magnetic field (SMF). MG63 osteoblast-like cells were exposed to a 0.4-T SMF. The differentiation markers were assessed by observing the changes in alkaline phosphatase activity and electron microscopy images. Me...

journal_title：Annals of biomedical engineering

authors： Chiu KH,Ou KL,Lee SY,Lin CT,Chang WJ,Chen CC,Huang HM

更新日期：2007-11-01 00:00:00

abstract：:The relationship between laboratory and on-field performance of football helmets was assessed for 31 football helmet models selected from those worn by players in the 2015-2019 National Football League (NFL) seasons. Linear impactor tests were conducted with helmets placed on an instrumented Hybrid III head and neck a...

journal_title：Annals of biomedical engineering

authors： Bailey AM,McMurry TL,Cormier JM,Funk JR,Crandall JR,Mack CD,Myers BS,Arbogast KB

更新日期：2020-11-01 00:00:00

abstract：:A mathematical model is presented that estimates joint kinematics and kinetics using measured external resultant loads and readily available parameters. The musculo-skeletal system was represented by a planar three degrees of freedom open kinematic chain. Information extraction was limited to the flexion-extension fun...

journal_title：Annals of biomedical engineering

authors： Mazzà C,Cappozzo A

更新日期：2004-05-01 00:00:00

abstract：:Of the many models of peripheral nerve in the literature, essentially all have relied on experimentally derived values for the anisotropic resistivity of the nerve bundle interstitial space. This paper is a comprehensive mathematical analysis of the most referenced experiment for the longitudinal and radial resistivit...

journal_title：Annals of biomedical engineering

authors： Altman KW,Plonsey R

更新日期：1989-01-01 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：:Spine musculoskeletal models used to estimate loads and displacements require many simplifying assumptions. We examined how assumptions about subject size and vertebral positions can affect the model outcomes. Head and neck models were developed to represent 30 subjects (15 males and 15 females) in neutral posture and...

journal_title：Annals of biomedical engineering

authors： Vasavada AN,Hughes E,Nevins DD,Monda SM,Lin DC

更新日期：2018-11-01 00:00:00

abstract：:This article presents a computer-aided detection system for capsule endoscopy (CE) images using contourlet-based color textural features to recognize tumors in the digestive tract. As tumor exhibits rich information in color texture, a novel color texture feature based on contourlet transform is proposed to describe c...

journal_title：Annals of biomedical engineering

authors： Li B,Meng MQ

更新日期：2011-12-01 00:00:00

abstract：:Blunt carotid artery injuries occur in 0.3% of blunt injured patients and may lead to devastating neurological consequences. However, arterial mechanics leading to internal layer subfailure have not been quantified. Twenty-two human carotid artery segments and 18 porcine thoracic aorta segments were opened to expose t...

journal_title：Annals of biomedical engineering

authors： Stemper BD,Yoganandan N,Sinson GP,Gennarelli TA,Stineman MR,Pintar FA

更新日期：2007-02-01 00:00:00

abstract：:Lung cancer patients often suffer from severe airway stenosis, the symptoms of which can be relieved by the implantation of stents. Different respiratory stents are commercially available, but the impact of their mechanical performance on tissue responses is not well understood. Two novel laser-cut and hand-braided ni...

journal_title：Annals of biomedical engineering

authors： Thiebes AL,McGrath DJ,Kelly N,Sweeney CA,Kurtenbach K,Gesché VN,Clauser J,O'Brien B,Bruzzi M,McHugh PE,Jockenhoevel S,Cornelissen CG

更新日期：2019-08-01 00:00:00

abstract：:A computer-based feedback system has been developed to adjust the concentration of oxygen in the inspired gas of a patient under artificial respiration. The system uses a proportional plus integral controller and feedback of arterial oxygen saturation to adjust the inspired oxygen fraction. The effectiveness of the co...

journal_title：Annals of biomedical engineering

authors： Tehrani FT

更新日期：1992-01-01 00:00:00

abstract：:Computing the numerical solution of the bidomain equations is widely accepted to be a significant computational challenge. In this study we extend a previously published semi-implicit numerical scheme with good stability properties that has been used to solve the bidomain equations (Whiteley, J.P. IEEE Trans. Biomed. ...

journal_title：Annals of biomedical engineering

authors： Whiteley JP

更新日期：2008-08-01 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