Spatial and temporal variations in the magnetic fields produced by human gastrointestinal activity.

abstract：:Taking advantage of motion sensing technology, a quantitative assessment method for lower limbs motor function of cerebral palsy (CP) based on the gross motor function measurement (GMFM)-24 scale was explored in this study. According to the motion analysis on GMFM-24 scale, we translated the assessment problem of GMFM...

journal_title：Medical & biological engineering & computing

authors： Chen X,Wu Q,Tang L,Cao S,Zhang X,Chen X

更新日期：2020-01-01 00:00:00

abstract：:Significant efforts were invested during the last decade to accelerate PET list-mode reconstructions, notably with GPU devices. However, the computation time per event is still relatively long, and the list-mode efficiency on the GPU is well below the histogram-mode efficiency. Since list-mode data are not arranged in...

journal_title：Medical & biological engineering & computing

authors： Nassiri MA,Carrier JF,Després P

更新日期：2015-09-01 00:00:00

abstract：:Time-varying filtering techniques are applied to the problem of baseline correction by letting the cut-off frequency of a linear filter be controlled by the low-frequency properties of the ECG signal. The time-varying filter is implemented as a bank of linear low-pass filters, in which each filter has a slightly diffe...

journal_title：Medical & biological engineering & computing

authors： Sörnmo L

更新日期：1993-09-01 00:00:00

abstract：:The object of this study is to compare the performance of two new bilinear time-frequency representation techniques with the spectrogram to characterise the behaviour of heart murmurs produced by bioprosthetic heart valves implanted in the mitral or aortic position. The murmurs are those of mitral stenosis, mitral reg...

journal_title：Medical & biological engineering & computing

authors： Debiais F,Durand LG,Pibarot P,Guardo R

更新日期：1997-09-01 00:00:00

abstract：:Hepatic echinococcosis (HE) is a life-threatening liver disease caused by parasites that requires a precise diagnosis and proper treatments. To assess HE lesions accurately, we propose a novel automatic HE lesion segmentation and classification network that contains lesion region positioning (LRP) and lesion region se...

journal_title：Medical & biological engineering & computing

authors： Xin S,Shi H,Jide A,Zhu M,Ma C,Liao H

更新日期：2020-03-01 00:00:00

abstract：:Disappointing results for total ankle replacement have been explained by poor knowledge of the mechanics of the intact and replaced joints. Dynamic simulation tools have the capacity to simulate dynamic conditions that occur in human joints. The Working Model 2D tool was used to simulate the mechanics of the intact an...

journal_title：Medical & biological engineering & computing

authors： Leardini A,Moschella D

更新日期：2002-03-01 00:00:00

abstract：:An algorithm for determining the frequency and propagation time of the gastric slow wave has been designed for integration into a demand gastric pacing system. The algorithm analyses the serosal activity in both the time and frequency domains, and the results are compared to produce a conclusion only when the values a...

journal_title：Medical & biological engineering & computing

authors： Gray MB,Williams RD,Chen JD

更新日期：2000-01-01 00:00:00

abstract：:When the microvascular blood perfusion in human skin is measured by photoplethysmography (PPG), infra-red light (800-960 nm) is normally used as the light source. The PPG signal, which consists of a pulsatile (AC) and a slowly fluctuating (DC) component, was studied at different optical wavelengths utilising optical f...

journal_title：Medical & biological engineering & computing

authors： Lindberg LG,Oberg PA

更新日期：1991-01-01 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：:An eye pointer was developed as a new line-of-sight displacement analyser. It analyses an observer's eye movements and superimposes their line of vision on a TV image which is the same as their view. A newly developed miniature colour field camera and very compact eye-movement sensors are attached to a translucent rei...

journal_title：Medical & biological engineering & computing

authors： Yamada M,Fukuda T,Hirota M

更新日期：1990-07-01 00:00:00

abstract：:Artifacts cause distortion and fuzziness in electroencephalographic (EEG) signal and hamper EEG analysis, so it is necessary to remove them prior to the analysis. Particularly, artifact removal becomes a critical issue in experimental protocols with significant inherent recording noise, such as mobile EEG recordings a...

journal_title：Medical & biological engineering & computing

authors： Li J,Chen Y,Taya F,Lim J,Wong K,Sun Y,Bezerianos A

更新日期：2017-09-01 00:00:00

abstract：:Photoplethysmography imaging (PPGI) for non-contact monitoring of preterm infants in the neonatal intensive care unit (NICU) is a promising technology, as it could reduce medical adhesive-related skin injuries and associated complications. For practical implementations of PPGI, a region of interest has to be detected ...

journal_title：Medical & biological engineering & computing

authors： Antink CH,Ferreira JCM,Paul M,Lyra S,Heimann K,Karthik S,Joseph J,Jayaraman K,Orlikowsky T,Sivaprakasam M,Leonhardt S

更新日期：2020-12-01 00:00:00

abstract：:We have successfully developed a multiscale acoustic-resolution photoacoustic tomography system in a single imaging platform. By switching between ultrasound transducers (center frequencies 5 and 40 MHz) and optical condensers, we have photoacoustically imaged microvasculatures of small animals in vivo at different sc...

journal_title：Medical & biological engineering & computing

authors： Jeon M,Kim J,Kim C

更新日期：2016-03-01 00:00:00

abstract：:Dengue fever detection and classification have a vital role due to the recent outbreaks of different kinds of dengue fever. Recently, the advancement in the microarray technology can be employed for such classification process. Several studies have established that the gene selection phase takes a significant role in ...

journal_title：Medical & biological engineering & computing

authors： Chatterjee S,Dey N,Shi F,Ashour AS,Fong SJ,Sen S

更新日期：2018-04-01 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：: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：:On the basis of spatial covariance it is found that, by spatial filtering the localisation of a single dipole source, both parallel and perpendicular to the measurement plane (assuming a signal-noise ratio of 5:1), can be performed with an accuracy of < 0.5 mm. When the signal-noise ratio is increased to 30:1, the res...

journal_title：Medical & biological engineering & computing

authors： Wagner H,Eiselt M,Zwiener U

更新日期：1997-11-01 00:00:00

abstract：:Spectral analysis of heart rate variability (HRV) is a widely accepted approach for assessment of cardiac autonomic function and its relationship to numerous disorders and diseases. As a rule, the non-parametric methods for HRV spectral analysis are tested using the integral pulse frequency modulation (IPFM) model. Ho...

journal_title：Medical & biological engineering & computing

authors： Mitov IP

更新日期：2001-05-01 00:00:00

abstract：:In a computerised ultrasound image guidance for automated prostatectomy system, it is necessary to identify a smooth, continuous contour for the prostate (boundary) from the ultrasound image. The radial bas-relief (RBR) method, which has been reported previously, can extract a skeletonised image from an ultrasound ima...

journal_title：Medical & biological engineering & computing

authors： Kwoh CK,Teo MY,Ng WS,Tan SN,Jones LM

更新日期：1998-11-01 00:00:00

abstract：:A computer controlled mechanical lung model has been developed for testing lung function equipment, validation of computer programs and simulation of impaired pulmonary mechanics. The construction, function and some applications are described. The physical model is constructed from two bellows and a pipe system repres...

journal_title：Medical & biological engineering & computing

authors： Verbraak AF,Beneken JE,Bogaard JM,Versprille A

更新日期：1995-11-01 00:00:00

abstract：:A method is presented for automatic analysis of the P-wave, based on lead II of a 12-lead standard ECG, in resting conditions during a routine examination for the detection of patients prone to atrial fibrillation (AF), one of the most prevalent arrhythmias. First, the P-wave was delineated, and this was achieved in t...

journal_title：Medical & biological engineering & computing

authors： Clavier L,Boucher JM,Lepage R,Blanc JJ,Cornily JC

更新日期：2002-01-01 00:00:00

abstract：:Respiratory rate (RR) is an important vital sign which can be difficult to measure accurately and unobtrusively in routine clinical practice. Pulse transit time (PTT), on the other hand, is unobtrusive to collect from electrocardiogram (ECG) and photoplethysmogram (PPG) signals. Using PTT is a novel method to estimate...

journal_title：Medical & biological engineering & computing

authors： Ding X,Yan BP,Karlen W,Zhang YT,Tsang HK

更新日期：2020-02-01 00:00:00

abstract：:During scoliosis instrumentation surgery, it is difficult for surgeons fully to track vertebral motion in 3D, because only the posterior elements of the spine are exposed. Different intra-operative modelling approaches are evaluated using a registration technique that matches intra-operative measurements with a 3D pre...

journal_title：Medical & biological engineering & computing

authors： Mac-Thiong JM,Aubin CE,Dansereau J,de Guise JA,Brodeur P,Labelle H

更新日期：1999-07-01 00:00:00

abstract：:Remote patient monitoring should reduce mortality rates, improve care, and reduce costs. We present an overview of the available technologies for the remote monitoring of chronic obstructive pulmonary disease (COPD) patients, together with the most important medical information regarding COPD in a language that is ada...

journal_title：Medical & biological engineering & computing

authors： Tomasic I,Tomasic N,Trobec R,Krpan M,Kelava T

更新日期：2018-04-01 00:00:00

abstract：:The vagus nerves convey both afferent and efferent information about autonomic activity related to cardiovascular functions. Those functions have been shown to change due to epileptic seizures, which suggests that ictal events might be detected via the vagus electroneurogram (VENG). In this study, we characterize the ...

journal_title：Medical & biological engineering & computing

authors： Harreby KR,Sevcencu C,Struijk JJ

更新日期：2011-09-01 00:00:00

abstract：:A multichannel biopotential amplifier for simultaneous use with biomagnetic measurements in a magnetically shielded room is designed and evaluated. Particular care is taken to make the amplifier electromagnetically compatible with the biomagnetic instruments over the whole frequency spectrum, from DC to RF. The electr...

journal_title：Medical & biological engineering & computing

authors： Virtanen J,Parkkonen L,Ilmoniemi RJ,Pekkonen E,Näätänen R

更新日期：1997-07-01 00:00:00

abstract：:Functional magnetic resonance imaging (FMRI) is an imaging technique for determining which regions of the brain are activated in response to a stimulus or event. Early FMRI experiment paradigms were based upon those used in positron emission tomography (PET), i.e. employing a block design consisting of extended period...

journal_title：Medical & biological engineering & computing

authors： Burke D,Murphy K,Garavan H,Reilly R

更新日期：2004-09-01 00:00:00

abstract：:An original numerical method is developed to compute the 3D electric potential generated by a dot-contact cuff electrode implanted around an axisymmetrical, inhomogeneous, anisotropic nerve. The technique is based on a 2D finite-element approach coupled with a semi-analytical Fourier spectral decomposition to approxim...

journal_title：Medical & biological engineering & computing

authors： Parrini S,Delbeke J,Romero E,Legat V,Veraart C

更新日期：1999-11-01 00:00:00

abstract：:Recent studies were investigated that report spontaneous oscillations of cerebral perfusion in the very low-frequency range (0.01-0.04 Hz), emphasising details of spectral estimation. The effects of different spectral estimation procedures were compared, using simulated and clinical data. It was shown that data detren...

journal_title：Medical & biological engineering & computing

authors： Müller T,Reinhard M,Oehm E,Hetzel A,Timmer J

更新日期：2003-01-01 00:00:00

abstract：:Gait disturbances are common in the rat model of Parkinson's disease (PD) by administrating 6-hydroxydopamine. However, few studies have simultaneously assessed spatiotemporal gait indices and the kinematic information of PD rats during overground locomotion. This study utilized a simple, accurate, and reproducible me...

journal_title：Medical & biological engineering & computing

authors： Lee HY,Hsieh TH,Liang JI,Yeh ML,Chen JJ

更新日期：2012-09-01 00:00:00