abstract：:Quantitative analysis and detection of electroencephalogram (EEG) recordings during evoked activities is essential for clinical diagnosis on neurological disorders. However, the process of interpreting EEG is time consuming for electroencephalographers (EEGers). In this study, an automatic EEG interpretation system co...

journal_title：Medical & biological engineering & computing

authors： Zhang X,Wang X,Sugi T,Ikeda A,Nagamine T,Shibasaki H,Nakamura M

更新日期：2011-02-01 00:00:00

abstract：:The problem of excess cerebrospinal fluid in the brain (hydrocephalus) is generally managed using a passive pressure or flow regulated mechanical shunt. Despite the success of such devices, they have been plagued with a number of problems. It is desirable to have a shunt valve that responds dynamically to the changing...

journal_title：Medical & biological engineering & computing

authors： Momani L,Al-Nuaimy W,Al-Jumaily M,Mallucci C

更新日期：2011-01-01 00:00:00

abstract：:Mean arterial pressure (MAP) is determined in most automated oscillometric blood pressure devices, but its derivation has been little studied. In this research, different techniques were studied and compared with the auscultatory technique. Auscultatory systolic and diastolic blood pressure (SBP and DBP) were obtained...

journal_title：Medical & biological engineering & computing

authors： Zheng D,Amoore JN,Mieke S,Murray A

更新日期：2011-01-01 00:00:00

abstract：:Cerebral autoregulation controls cerebral blood flow under changing cerebral perfusion pressure. Standards for measurement and analysis of dynamic cerebral autoregulation (dCA) are lacking. In this study, dCA reproducibility, quantified by intraclass correlation coefficient, is evaluated for different methodological a...

journal_title：Medical & biological engineering & computing

authors： Gommer ED,Shijaku E,Mess WH,Reulen JP

更新日期：2010-12-01 00:00:00

abstract：:Recent clinical evidence has suggested that tasks performed in kneeling or squatting postures place the knee at a higher risk for injury because loads across the knee might overload the ligaments. The objective of this study was to develop a subject-specific model of the knee that is kinematically driven to predict th...

journal_title：Medical & biological engineering & computing

authors： Yang Z,Wickwire AC,Debski RE

更新日期：2010-11-01 00:00:00

abstract：:Magnetic nanoparticles for therapy and diagnosis are at the leading edge of the rapidly developing field of bionanotechnology. In this study, we have theoretically studied motion of magnetic nano- as well as micro-particles in the field of cylindrical Halbach array of permanent magnets. Magnetic flux density was model...

journal_title：Medical & biological engineering & computing

authors： Babinec P,Krafcík A,Babincová M,Rosenecker J

更新日期：2010-08-01 00:00:00

abstract：:We introduce a novel method for an automatic classification of subjects to those with or without neuromuscular disorders. This method is based on multiscale entropy of recorded surface electromyograms (sEMGs) and support vector classification. The method was evaluated on a single-channel experimental sEMGs recorded fr...

journal_title：Medical & biological engineering & computing

authors： Istenic R,Kaplanis PA,Pattichis CS,Zazula D

更新日期：2010-08-01 00:00:00

abstract：:The purpose of this study is to investigate the change in biomechanical milieu following removal of pedicle screws in instrumented single level lumbar arthrodesis. Using a validated finite element (FE) model of the intact lumbar spine (L2-5), two scenarios of L3-4 lumbar fusion were simulated: posterolateral fusion (P...

journal_title：Medical & biological engineering & computing

authors： Kim HJ,Chun HJ,Moon SH,Kang KT,Kim HS,Park JO,Moon ES,Sohn JS,Lee HM

更新日期：2010-07-01 00:00:00

abstract：:In this study, we introduce a novel simulation technique to incorporate delineation errors into radiotherapy treatment margins and combine them with organ motion and set-up errors to investigate the cumulative dosimetric effects in different tumour sites. The effects of applying patient realignment correction protocol...

journal_title：Medical & biological engineering & computing

authors： Mzenda B,Hosseini-Ashrafi M,Palmer A,Liu H,Brown DJ

更新日期：2010-07-01 00:00:00

abstract：:This article presents model predictive controllers (MPCs) and multi-parametric model-based controllers for delivery of anaesthetic agents. The MPC can take into account constraints on drug delivery rates and state of the patient but requires solving an optimization problem at regular time intervals. The multi-parametr...

journal_title：Medical & biological engineering & computing

authors： Dua P,Dua V,Pistikopoulos EN

更新日期：2010-06-01 00:00:00

abstract：:This study analyzes the performance of knee extension and flexion of Taekwondo and Kickboxing athletes. The power values were extracted through electromyography obtained by an isokinetic dynamometer at 60 degrees per second. These values are resulted from the square of the electromyography signal. The analysis of kick...

journal_title：Medical & biological engineering & computing

authors： Machado SM,Osório RA,Silva NS,Magini M

更新日期：2010-06-01 00:00:00

abstract：:Even though the World Health Organization criteria's for classifying the dengue infection have been used for long time, recent studies declare that several difficulties have been faced by the clinicians to apply these criteria. Accordingly, many studies have proposed modified criteria to identify the risk in dengue pa...

journal_title：Medical & biological engineering & computing

authors： Faisal T,Taib MN,Ibrahim F

更新日期：2010-03-01 00:00:00

abstract：:The Pennes bioheat equation and finite element method (FEM) are used to solve for the temperature distributions in the spinal cord and cerebrospinal fluid (CSF) during 30 min of cooling for spinal cord injury (SCI) patients. The average CSF and spinal cord temperatures are reduced by 3.48 and 2.72 degrees C, respectiv...

journal_title：Medical & biological engineering & computing

authors： Smith KD,Zhu L

更新日期：2010-02-01 00:00:00

abstract：:In this study, we present finite element analysis models to calculate the increase in intrathoracic volume of pectus excavatum patients after the Nuss procedure. One virtue of our approach is that the measurement of the intrathoracic volume has no time difference and is not affected by postoperative pain, which cannot...

journal_title：Medical & biological engineering & computing

authors： Chang PY,Hsu ZY,Lai JY,Wang CJ,Ching YT

更新日期：2010-02-01 00:00:00

abstract：:The CellDrum technology (The term 'CellDrum technology' includes a couple of slightly different technological setups for measuring lateral mechanical tension in various types of cell monolayers or 3D-tissue constructs) was designed to quantify the contraction rate and mechanical tension of self-exciting cardiac myocyt...

journal_title：Medical & biological engineering & computing

authors： Linder P,Trzewik J,Rüffer M,Artmann GM,Digel I,Kurz R,Rothermel A,Robitzki A,Temiz Artmann A

更新日期：2010-01-01 00:00:00

abstract：:A computer-aided method was developed to automatically localize tumors in lung PET images of discrete bins within the breathing cycle, followed by an algorithm that registers all the information of a complete respiratory cycle into a single reference bin. Four registration/integration algorithms: Centroid Based, Inten...

journal_title：Medical & biological engineering & computing

authors： Wang J,del Valle M,Goryawala M,Franquiz JM,McGoron AJ

更新日期：2010-01-01 00:00:00

abstract：:The tortuosity of retinal blood vessels is an important diagnostic indicator for a number of retinal pathologies. We applied robust quantitative tortuosity metrics, which are well suited to automated detection and measurement, to retinal fluorescein images of normal and diseased vessels exhibiting background diabetic ...

journal_title：Medical & biological engineering & computing

authors： Dougherty G,Johnson MJ,Wiers MD

更新日期：2010-01-01 00:00:00

abstract：:This article presents a stimulation control method using a uniaxial gyroscope measuring angular velocity of the shank in the sagittal plane, to control functional electrical stimulation of the triceps surae to improve push-off of stroke subjects during gait. The algorithm is triggered during each swing phase of gait w...

journal_title：Medical & biological engineering & computing

authors： Monaghan CC,van Riel WJ,Veltink PH

更新日期：2009-11-01 00:00:00

abstract：:The present paper compares the performance of two Hilbert spectral analyses when applied to a synthetic RR series from a nonstationary integral pulse frequency modulation model and to real RR series from a dataset of normal sinus arrhythmia. The Hilbert-Huang transformation based on empirical mode decomposition is com...

journal_title：Medical & biological engineering & computing

authors： Ihlen EA

更新日期：2009-10-01 00:00:00

abstract：:We present an analytical solution for the electrical potential and activating function (AF) established by cylindrical needle electrodes in anisotropic tissue. We compare this activating function to (1) AF computed assuming line-source electrodes and (2) AF computed using a finite element program. The results show tha...

journal_title：Medical & biological engineering & computing

authors： Guo L,Cranford JP,Neu JC,Neu WK

更新日期：2009-09-01 00:00:00

abstract：:The main constituent of an ultrasound contrast agent (UCA) is gas-filled microbubbles. An average UCA contains billions per ml. These microbubbles are excellent ultrasound scatterers due to their high compressibility. In an ultrasound field they act as resonant systems, resulting in harmonic energy in the backscattere...

journal_title：Medical & biological engineering & computing

authors： de Jong N,Emmer M,van Wamel A,Versluis M

更新日期：2009-08-01 00:00:00

abstract：:We present a novel method to iteratively calculate discrete Fourier transforms for discrete time signals with sample time intervals that may be widely nonuniform. The proposed recursive Fourier transform (RFT) does not require interpolation of the samples to uniform time intervals, and each iterative transform update ...

journal_title：Medical & biological engineering & computing

authors： Holland A,Aboy M

更新日期：2009-07-01 00:00:00

abstract：:The boundary-element method (BEM) is widely used for electrocardiogram (ECG) simulation. Its major disadvantage is its perceived inability to deal with the anisotropic electric conductivity of the myocardial interstitium, which led researchers to represent only intracellular anisotropy or neglect anisotropy altogether...

journal_title：Medical & biological engineering & computing

authors： Potse M,Dubé B,Vinet A

更新日期：2009-07-01 00:00:00

abstract：:A new ambulatory technique for qualitative and quantitative movement analysis of the humerus is presented. 3D gyroscopes attached on the humerus were used to recognize the movement of the arm and to classify it as flexion, abduction and internal/external rotations. The method was first validated in a laboratory settin...

journal_title：Medical & biological engineering & computing

authors： Coley B,Jolles BM,Farron A,Aminian K

更新日期：2009-05-01 00:00:00

abstract：:Primary stability of refixated fractures in case of shoulder hemiarthroplasty is a prerequisite to restore physiological glenohumeral joint function. Clinical observations often show a secondary dislocation and subsequent resorption of the bony anchor points like the greater and lesser tuberosity at the rotator cuff t...

journal_title：Medical & biological engineering & computing

authors： Baumgartner D,Lorenzetti SR,Mathys R,Gasser B,Stüssi E

更新日期：2009-05-01 00:00:00

abstract：:In the present study, well known scale-space filtering (SSF) algorithm is used in combination with a linear mapping approach (LMA) to obtain clear auditory evoked potential (EP) waveform. The proposed combination involves two sequential steps: At first, the EEG noise level is reduced from -5 to 0 dB owing to the LMA b...

journal_title：Medical & biological engineering & computing

authors： Aydin S

更新日期：2009-04-01 00:00:00

abstract：:The propagation of waves in the arteries is generally described using Fourier analysis in terms of periodic wavetrains formed by the superposition of a mean value and sinusoidal waves at the fundamental frequency (defined by the heart rate) and its harmonics. There is, however, an alternative way to describe waves in ...

journal_title：Medical & biological engineering & computing

authors： Wang JJ,Shrive NG,Parker KH,Tyberg JV

更新日期：2009-02-01 00:00:00

abstract：:A method for extrapolating the extracellular water (ECW) resistance from wrist-ankle resistance at 50 kHz (R (50)) is proposed in this paper, in order to enable 50 kHz impedancemeters to use the BIS-Hanai equation for determination of ECW. Values of R (50) and the ECW resistance extrapolated at zero frequency R (e) we...

journal_title：Medical & biological engineering & computing

authors： Jaffrin MY,Morel H

更新日期：2009-01-01 00:00:00

abstract：:Obstructive sleep apnea syndrome (OSAS) is a major public health problem. The golden reference for diagnosing OSAS is the sleep-laboratory based polysomnography (PSG). However, screening of population for OSAS may be practical and cost efficient only through ambulatory home recordings. In this work we aimed to design,...

journal_title：Medical & biological engineering & computing

authors： Tiihonen P,Pääkkönen A,Mervaala E,Hukkanen T,Töyräs J

更新日期：2009-01-01 00:00:00

abstract：:Most tissues are subject to some form of physiological mechanical loading which results in deformation of the cells triggering intracellular mechanotransduction pathways. This response to loading is generally essential for the health of the tissue, although more pronounced deformation may result in cell and tissue dam...

journal_title：Medical & biological engineering & computing

authors： Bader DL,Knight MM

更新日期：2008-10-01 00:00:00

abstract：:The lactate threshold is used by athletes to optimise the intensity during exercise. It is of interest to measure the threshold on the very day and during the present sport activity. Steady state ergometer tests have been performed on 40 individuals to compare the threshold found by an electro acoustic sensor system t...

journal_title：Medical & biological engineering & computing

authors： Folke M

更新日期：2008-09-01 00:00:00

abstract：:Pre-operative diagnosis of chest-wall deformity is important for successful surgical correction and post-operative evaluation of funnel chest patients. However, conventional indices that define the severity of deformity have several limitations; manually calculated and cannot supply information about asymmetry. We dev...

journal_title：Medical & biological engineering & computing

authors： Kim HC,Park HJ,Ham SY,Nam KW,Choi SY,Oh JS,Choi H,Jeong GS,Park SW,Kim MG,Sun K

更新日期：2008-08-01 00:00:00

abstract：:Atrial fibrillation (AF) is the most common cardiac arrhythmia with episodes that may terminate spontaneously in the first stages of the disease. On the other hand, when the arrhythmia is not self-terminating, normal sinus rhythm (NSR) restoration use to be required to reduce the risk of stroke and improve cardiac out...

journal_title：Medical & biological engineering & computing

authors： Alcaraz R,Rieta JJ

更新日期：2008-07-01 00:00:00

abstract：:This study describes a new method for analyzing microcirculatory videos. It introduces algorithms for quantitative assessment of vessel length, diameter, the functional microcirculatory density distribution and red blood-cell (RBC) velocity in individual vessels as well as its distribution. The technique was validated...

journal_title：Medical & biological engineering & computing

authors： Dobbe JG,Streekstra GJ,Atasever B,van Zijderveld R,Ince C

更新日期：2008-07-01 00:00:00

abstract：:Nitric oxide (NO) released by endothelial cells in response to hemodynamic shear stress is a key controller molecule of the vascular functions and antiatherogenic mechanisms. Endothelial dysfunction is associated with increased cardiovascular events. Therefore, several indirect techniques have been employed to evaluat...

journal_title：Medical & biological engineering & computing

authors： Goto M,Mochizuki S

更新日期：2008-05-01 00:00:00

abstract：:The regulation of the coronary circulation is a complex paradigm in which many inputs that influence vasomotor tone have to be integrated to provide the coronary vasomotor adjustments to cardiac metabolism and to perfusion pressure. We hypothesized that the integration of many disparate signals that influence membrane...

journal_title：Medical & biological engineering & computing

authors： Trzeciakowski J,Chilian WM

更新日期：2008-05-01 00:00:00

abstract：:The objective of the present work was to develop automated methods for the compressed tracheal breathing sound analysis. Overnight tracheal breathing sound was recorded from ten apnoea patients. From each patient, three different types of tracheal sound deflection pattern, each of 10 min duration, were visually scored...

journal_title：Medical & biological engineering & computing

authors： Kulkas A,Rauhala E,Huupponen E,Virkkala J,Tenhunen M,Saastamoinen A,Himanen SL

更新日期：2008-04-01 00:00:00

abstract：:A hypothetical neuromusculoskeletal model is developed to simulate human normal walking and its modulated behaviors. A small set of neural periodic patterns drive spinal muscle synergies which in turn lead to specific pattern of muscle activation and supraspinal feedback systems maintain postural balance during walkin...

journal_title：Medical & biological engineering & computing

authors： Jo S

更新日期：2008-02-01 00:00:00

abstract：:Tissue surface temperature distribution on the treatment site can serve as an indicator for the effectiveness of a photothermal therapy. In this study, both infrared thermography and theoretical simulation were used to determine the surface temperature distribution during laser irradiation of both gel phantom and anim...

journal_title：Medical & biological engineering & computing

authors： Gnyawali SC,Chen Y,Wu F,Bartels KE,Wicksted JP,Liu H,Sen CK,Chen WR

更新日期：2008-02-01 00:00:00

abstract：:The development of an active implantable device for measuring electrocardiogram (ECG) is presented. The study is a part of a project which aims at developing implantable ECG instrumentation with wireless data and power transfer ( http://www.ele.tut.fi/tule ). The developed implant presented here has all the measuremen...

journal_title：Medical & biological engineering & computing

authors： Riistama J,Väisänen J,Heinisuo S,Harjunpää H,Arra S,Kokko K,Mäntylä M,Kaihilahti J,Heino P,Kellomäki M,Vainio O,Vanhala J,Lekkala J,Hyttinen J

更新日期：2007-12-01 00:00:00