Decreased global field synchronization of multichannel frontal EEG measurements in obsessive-compulsive disorders.

abstract：:A computer-controlled pump for use both in the study of vascular haemodynamics and in the calibration of clinical devices which measure blood flow is designed. The novel design of this pump incorporates two rack-mounted pistons, driven into opposing cylinders by a micro-stepping motor. This approach allows the product...

journal_title：Medical & biological engineering & computing

authors： Holdsworth DW,Rickey DW,Drangova M,Miller DJ,Fenster A

更新日期：1991-11-01 00:00:00

abstract：:A method for accurately finding cardiac bidomain conductivity parameters is a crucial part of efforts to study and understand the electrical functioning of the heart. The bidomain model considers current flowing along (longitudinal) and across (transverse) sheets of cardiac fibres, as well as between these sheets (nor...

journal_title：Medical & biological engineering & computing

authors： Johnston BM,Johnston PR

更新日期：2013-12-01 00:00:00

abstract：:One challenge in the current research of brain-computer interfaces (BCIs) is how to classify time-varying electroencephalographic (EEG) signals as accurately as possible. In this paper, we address this problem from the aspect of updating feature extractors and propose an adaptive feature extractor, namely adaptive com...

journal_title：Medical & biological engineering & computing

authors： Sun S,Zhang C

更新日期：2006-10-01 00:00:00

abstract：:The physiological parameters of blood such as extracellular Na(+), K(+), Cl(-), pH, 2,3-DPG and ATP and the complex electrical impedance were measured using whole blood samples from 31 male donors (21 donors form the training set and ten donors were used for testing), on the 0th, 10th and 21st day of blood bank storag...

journal_title：Medical & biological engineering & computing

authors： Ulgen Y,Sezdi M

更新日期：2007-07-01 00:00:00

abstract：:Determination of the adequacy of dialysis is a routine but crucial procedure in patient evaluation. The total dialysis dose, expressed as Kt/V, has been widely recognised to be a major determinant of morbidity and mortality in haemodialysed patients. Many different factors influence the correct determination of Kt/V, ...

journal_title：Medical & biological engineering & computing

authors： Fernández EA,Valtuille R,Willshaw P,Perazzo CA

更新日期：2003-07-01 00:00:00

abstract：:Blood oxygenation level is an important measure that can be used alongside functional magnetic resonance imaging data in order to obtain closer correlates of neuronal activation. A robust estimate of this measure has thus far not been demonstrated. This is mainly due to the lack of knowledge of the underlying paramete...

journal_title：Medical & biological engineering & computing

authors： Dagher J,Du YP

更新日期：2012-05-01 00:00:00

abstract：:Leukaemia is a type of blood cancer which mainly occurs when bone marrow produces excess white blood cells in our body. This disease not only affects adult but also is a common cancer type among children. Treatment of leukaemia depends on its type and how far the disease has spread in the body. Leukaemia is classified...

journal_title：Medical & biological engineering & computing

authors： Anwar S,Alam A

更新日期：2020-12-01 00:00:00

abstract：:A continuous cardiac output monitoring system has been developed in the laboratory to allow the real-time measurement of the cardiac output. This form of continuous cardiac output measurement allows the doctor to view the beat-to-beat cardiac output and can be employed to measure artery constrictions as well. The sens...

journal_title：Medical & biological engineering & computing

authors： Tjin SC,Ho YC,Lam YZ,Hao J,Ng BK

更新日期：2001-01-01 00:00:00

abstract：:Spontaneous activity of specific regions (e.g., the Sinoatrial node, SAN) is essential for the normal activation sequence of the heart and also serve as a primary means of modulating cardiac rate by sympathetic tone and circulating catecholamines. The mechanisms of how a small SAN region can electrically drive a much ...

journal_title：Medical & biological engineering & computing

authors： Joyner RW,Wilders R,Wagner MB

更新日期：2007-02-01 00:00:00

abstract：:The aim of the study was to investigate the effect of signal length on the performance of a signal source separation method, independent component analysis (ICA), when extracting the visual evoked potential (EP) lambda wave from saccade-related electro-encephalogram (EEG) waveforms. A method was devised that enabled t...

journal_title：Medical & biological engineering & computing

authors： Vigon L,Saatchi R,Mayhew JE,Taroyan NA,Frisby JP

更新日期：2002-03-01 00:00:00

abstract：:Instrumentation to measure accurately the stresses at the interface of a residual limb and prosthetic socket has a strong potential for use in prosthetic treatment. As a tool in the clinical setting, the device would allow a clinician to identify sites of excessive loading, information which could then be combined wit...

journal_title：Medical & biological engineering & computing

authors： Sanders JE

更新日期：1995-07-01 00:00:00

abstract：:A computational model of the fluid dynamics of intraventricular flow was used to investigate the importance of the effects of flow disturbances existing within the left ventricle (LV) at the onset of diastole on a diastolic flow field. The simulation started with a quiescent flow state; it continued for a number of ca...

journal_title：Medical & biological engineering & computing

authors： Nakamura M,Wada S,Mikami T,Kitabatake A,Karino T,Yamaguchi T

更新日期：2004-07-01 00:00:00

abstract：:A simple objective screening method for diagnosis of the atrial septal defect (ASD) is needed. Acoustic signals were collected from 61 children with ASD and 60 with a physiological murmur. The second heart sound (S2) and the spectrum of systolic murmur were analysed. A statistical model was designed using stepwise log...

journal_title：Medical & biological engineering & computing

authors： El-Segaier M,Pesonen E,Lukkarinen S,Peters K,Ingemansson J,Sörnmo L,Sepponen R

更新日期：2006-09-01 00:00:00

abstract：:An atlas-based multimodal registration method for 2-dimension images with discrepancy structures was proposed in this paper. Atlas was utilized for complementing the discrepancy structure information in multimodal medical images. The scheme includes three steps: floating image to atlas registration, atlas to reference...

journal_title：Medical & biological engineering & computing

authors： Lv W,Chen H,Peng Y,Li Y,Li J

更新日期：2018-11-01 00:00:00

abstract：:Mammography is a widely used screening tool and is the gold standard for the early detection of breast cancer. The classification of breast masses into the benign and malignant categories is an important problem in the area of computer-aided diagnosis of breast cancer. A small dataset of 57 breast mass images, each wi...

journal_title：Medical & biological engineering & computing

authors： Nandi RJ,Nandi AK,Rangayyan RM,Scutt D

更新日期：2006-08-01 00:00:00

abstract：:Smoothing and differentiation of noisy signals are common problems whenever it is difficult or impossible to obtain derivatives by direct measurement. In biomechanics body displacements are frequently assessed and these measurements are affected by noise. To avoid high-frequency noise magnification, data filtering bef...

journal_title：Medical & biological engineering & computing

authors： D'Amico M,Ferrigno G

更新日期：1990-09-01 00:00:00

abstract：:During dialysis the ion concentrations in many body fluids change significantly. The influence of these changes on the accuracy of volume measurements with bioimpedance spectroscopy is investigated by the following procedure: Plasma ion concentrations and impedance spectra (5-500 kHz) are measured during six standard ...

journal_title：Medical & biological engineering & computing

authors： Scharfetter H,Wirnsberger GH,Holzer H,Hutten H

更新日期：1997-03-01 00:00:00

abstract：:Loop-mediated isothermal amplification or LAMP has been identified to be an efficient technology for point-of-care diagnostics. Paper-based LAMP technique has tremendous potential in replacing the existing tube-based technology as the manufacturing cost of a paper-based device is comparatively lower and easy-to-use. L...

journal_title：Medical & biological engineering & computing

authors： Das D,Panigrahi PK

更新日期：2020-02-01 00:00:00

abstract：:We propose a new method for breast X-ray image adaptive enhancement that combines nonsubsampled contourlet transform (NSCT) with the whale optimization algorithm (WOA). First, the mammography X-ray image was processed by histogram equalization to ensure global image contrast. The processed image was then decomposed in...

journal_title：Medical & biological engineering & computing

authors： Zhang CJ,Nie HH

更新日期：2019-10-01 00:00:00

abstract：:Quantitative sensory testing (QST) can provide useful information about the underlying mechanisms involved in chronic pain. However, currently available devices typically employed suffer from operator-dependent effects, or are too cumbersome for routine clinical care. This paper presents the design and initial validat...

journal_title：Medical & biological engineering & computing

authors： Harte SE,Mitra M,Ichesco EA,Halvorson ME,Clauw DJ,Shih AJ,Kruger GH

更新日期：2013-06-01 00:00:00

abstract：:The understanding of cardiac arrhythmia under genetic mutations has grown in interest among researchers. Previous studies focused on the effect of the D172N mutation on electrophysiological behavior. In this study, we analyzed not only the electrophysiological activity but also the mechanical responses during normal s...

journal_title：Medical & biological engineering & computing

authors： Heikhmakhtiar AK,Lee CH,Song KS,Lim KM

更新日期：2020-05-01 00:00:00

abstract：:Sino-aortic denervation (SAD) is employed in cats to evaluate the baroreflex influence on blood pressure (BP) and pulse interval (PI) spectral components from 0.00008 to 0.9 Hz as assessed by FFT wide-band spectra and their 1/f modelling; and the linear coupling between BP and PI and between systolic and diastolic BP ...

journal_title：Medical & biological engineering & computing

authors： Di Rienzo M,Castiglioni P,Parati G,Mancia G,Pedotti A

更新日期：1996-03-01 00:00:00

abstract：:Deep brain stimulation (DBS) surgery is extensively used in the treatment of movement disorders. Nevertheless, methods to evaluate the clinical response during intraoperative stimulation tests to identify the optimal position for the implantation of the chronic DBS lead remain subjective. In this paper, we describe a ...

journal_title：Medical & biological engineering & computing

authors： Shah A,Coste J,Lemaire JJ,Taub E,Schüpbach WMM,Pollo C,Schkommodau E,Guzman R,Hemm-Ode S

更新日期：2017-05-01 00:00:00

abstract：:The aim of this study was to develop a radiation-free method to measure gastric emptying. Such a method would be useful e.g. for patients who need repeated measurements and in pregnancy. Ferrimagnetic particles (gamma-Fe2O3), ingested within a solid test meal (pancakes), were magnetised by an applied magnetic field. A...

journal_title：Medical & biological engineering & computing

authors： Forsman M

更新日期：1998-01-01 00:00:00

abstract：:Based on the principle of backscattering of laser radiation from tissues, a non-invasive PC-AT based reflectance imaging technique is developed. The laser beam from a semiconductor laser operating at 670 nm is guided to the tissue site by an optical fibre. The backscattered radiation is collected by another fibre plac...

journal_title：Medical & biological engineering & computing

authors： Shanthi S,Singh M

更新日期：1997-05-01 00:00:00

abstract：:Implantable cardioverter defibrillators (ICDs) can store intracardiac electrograms (EGMs) in sinus rhythm (SR), at the onset of spontaneous ventricular tachyarrhythmias (VT) or during their course. This allows the investigation of unknown features of the heart electrical activity associated with different cardiac rhyt...

journal_title：Medical & biological engineering & computing

authors： Casaleggio A,Rossi P,Faini A,Guidotto T,Malavasi V,Musso G,Sartori G

更新日期：2006-03-01 00:00:00

abstract：:The mastering of pulmonary auscultation requires complex acoustic skills. Computer-assisted learning tools (CALTs) have potential to enhance the learning of these skills; however, few have been developed for this purpose and do not integrate all the required features. Thus, this study aimed to assess the usability of ...

journal_title：Medical & biological engineering & computing

authors： Machado A,Oliveira A,Jácome C,Pereira M,Moreira J,Rodrigues J,Aparício J,Jesus LMT,Marques A

更新日期：2018-04-01 00:00:00

abstract：:A new method of stimulation of the lower extremities was devised that automatically adjusts the stimulation conditions at any angle of the knee joint. An M-wave is considered to indicate the stimulation conditions, because it is the waveform that results from direct stimulation to the axon of the alpha motor neuron. T...

journal_title：Medical & biological engineering & computing

authors： Tanabe S,Muraoka Y,Tomita Y

更新日期：2004-01-01 00:00:00

abstract：:The fraction of repolarization variability independent of RR interval variability is of clinical interest. It has been linked to direct autonomic nervous system (ANS) regulation of the ventricles in healthy subjects and seems to reflect the instability of the ventricular repolarization process in heart disease. In thi...

journal_title：Medical & biological engineering & computing

authors： El-Hamad F,Javorka M,Czippelova B,Krohova J,Turianikova Z,Porta A,Baumert M

更新日期：2019-08-01 00:00:00

abstract：:Fluctuation analysis has great potential to contribute to pulmonary clinical science and practice. We evaluated the relationship between asthma and the respiratory impedance recurrence period density entropy (RPDEnZrs) and the variability (SDZrs). A non-invasive and simple protocol for assessing respiratory mechanics ...

journal_title：Medical & biological engineering & computing

authors： Veiga J,Lopes AJ,Jansen JM,Melo PL

更新日期：2012-12-01 00:00:00