解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::A novel laser Doppler flowmetry scheme is reported that adjusts the processing bandwidth adaptively to optimise the estimation of flow. To obtain an adequate processing bandwidth, the Doppler spectra is first fitted to the Lorentzian function, and the bandwidth at half the maximum of the Lorentzian function is used as...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344700
更新日期:2004-05-01 00:00:00
abstract::Variations in the amplitude and period of essential and Parkinsonian tremors were studied. It was found that the variations in frequency (or period) were mostly similar to the white noise, with the standard deviation typically less than 10% of the mean, whereas the variations in amplitude were much larger, with standa...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344710
更新日期:2004-05-01 00:00:00
abstract::A method for the identification of the breast boundary in mammograms is presented. The method can be used in the preprocessing stage of a system for computer-aided diagnosis (CAD) of breast cancer and also in the reduction of image file size in picture archiving and communication system applications. The method starte...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344632
更新日期:2004-03-01 00:00:00
abstract::Portable biomedical instrumentation has become an important part of diagnostic and treatment instrumentation, including telemedicine applications. Low-voltage and low-power design tendencies prevail. Modern battery cell voltages in the range of 3-3.6 V require appropriate circuit solutions. A two-electrode biopotentia...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344642
更新日期:2004-03-01 00:00:00
abstract::Several recent studies have quantified abnormalities in Parkinsonian gait. However, few studies have attempted to quantify the regularity of body motion during walking in patients with Parkinson's disease. The aim of the paper was to characterise body motion patterns in healthy, elderly subjects and patients with Park...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02351008
更新日期:2004-01-01 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
pub_type: 杂志文章
doi:10.1007/BF02351018
更新日期:2004-01-01 00:00:00
abstract::A technique is proposed that allows automatic decomposition of electromyographic (EMG) signals into their constituent motor unit action potential trains (MUAPTs). A specific iterative algorithm with a classification method using fuzzy-logic techniques was developed. The proposed classification method takes into accoun...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02349972
更新日期:2003-11-01 00:00:00
abstract::The visco-elastic properties of living cells, measured to date by various authors, vary considerably, depending on the experimental methods and/or on the theoretical models used. In the present study, two mechanisms thought to be involved in cellular visco-elastic responses were analysed, based on the idea that the cy...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02349982
更新日期:2003-11-01 00:00:00
abstract::The performance of the stimulation coil in a magnetic nerve stimulator can be improved by attaching a ferromagnetic structure to the coil. This reduces heat generation at the coil and increases magnetic field strength for a given unit of current. Some technical aspects of the design of a stimulation coil with a ferrom...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345312
更新日期:2003-09-01 00:00:00
abstract::A building block-based software framework was developed to simulate electrophysiological networks. The synaptic potentials generated during neurotransmission were simulated in an existing discrete bidomain model of smooth muscle, using cubic, three-dimensional grids of varying sizes. The model is automatically derived...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345322
更新日期:2003-09-01 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
pub_type: 杂志文章
doi:10.1007/BF02348080
更新日期:2003-07-01 00:00:00
abstract::Over a period of some years, the components of a system for discerning erosion on children's teeth have been progressively developed, for use in an extensive project seeking correlations between erosion and various perceived risk factors. The aim was the detection of minute levels of erosion, based on mappings of the ...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02348090
更新日期:2003-07-01 00:00:00
abstract::The aim of the study was to assess the wavelength dependence of the UV absorbance during monitoring of different compounds in the dialysate. UV absorbance was determined by using a double-beam spectrophotometer on dialysate samples taken at pre-determined times during dialysis, over a wavelength range of 180-380 nm. C...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02348430
更新日期:2003-05-01 00:00:00
abstract::The aim of the study was to compare experimentally conduction velocity (CV) estimates obtained with different estimation methods based on surface electromyogram (EMG) signals detected using five spatial filters. The filters investigated were the longitudinal single and double differential, transverse single and double...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02348440
更新日期:2003-05-01 00:00:00
abstract::In the field of sports biomechanics and rehabilitation engineering, the possibility of computing, in real time, the angular displacements and derivatives of human joints, from a video of motion sequences, represents an appealing goal. In particular, applications of biofeedback protocols in rehabilitation can benefit f...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344878
更新日期:2003-03-01 00:00:00
abstract::The accelerometer is used for mechanomyogram (MMG) recordings of muscle contractions. Although the mechanical characteristics of other MMG transducers have been determined with reference to the accelerometer, mechanical aspects of the accelerometer itself, including the weight of the transducer, have not been verified...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344888
更新日期:2003-03-01 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
pub_type: 杂志文章
doi:10.1007/BF02343541
更新日期:2003-01-01 00:00:00
abstract::Respiratory sinus arrhythmia (RSA) is the variation of heart rate (or RR interval) in phase with respiration and has been extensively studied. However, the effect of respiration on atrioventricular conduction delay (and hence PR interval length) has not yet received much attention. This work reports on measurements of...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345298
更新日期:2002-11-01 00:00:00
abstract::The Chinese herb radix Salviae miltiorrhizae (RSM) is used in traditional Chinese medicine as a treatment for cardiovascular and cerebrovascular diseases. Several components of the plant extract from salvia mitorrhiza bunge have been determined previously, one of which is protocatechuic acid (PAC). It has been found, ...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345308
更新日期:2002-11-01 00:00:00
abstract::Modern pacemakers (implantable devices used for maintaining an appropriate heart rate in patients) can use an intracardiac ventricular impedance signal for physiological cardiac stimulation control. Intracardiac ventricular impedance from nine animal subjects is analysed and presented (seven sheep: 49.0 +/- 6.5 kg, si...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345448
更新日期:2002-09-01 00:00:00
abstract::To elucidate the mechanisms of localisation of intimal hyperplasia in anastomosed arteries, the effects of flow disturbances on the transport of low-density lipoproteins (LDLs) from the flowing blood to the wall of end-to-end anastomosed arteries, with and without a moderate stenosis, were studied theoretically by mea...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345458
更新日期:2002-09-01 00:00:00
abstract::Successful identification of gastric slow waves in canine gastric electrical activity (GEA) data was achieved using a statistical data-processing procedure based on the multiple linear regression (MLR) curve fitting technique. Both distal and proximal waveforms were identified, first by construction of separate orthon...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345076
更新日期:2002-07-01 00:00:00
abstract::The aim of the study was to develop a method for investigating how interictal epileptic discharges in temporal epilepsy patients are activated spatially. The activity was measured using magneto-encephalography (MEG). The MEG data were used to produce a current-arrow map that reflected the topographic distribution of t...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344215
更新日期:2002-05-01 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
pub_type: 杂志文章
doi:10.1007/BF02348124
更新日期:2002-03-01 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
pub_type: 杂志文章
doi:10.1007/BF02348134
更新日期:2002-03-01 00:00:00
abstract::Pain control in conscious patients was investigated using a push-button, demand-driven supply of drugs. A fuzzy logic patient-controlled analgesia (PCA) algorithm was compared with a conventional algorithm, for alfentanil administration in extracorporeal shock-wave lithotripsy. The conventional PCA algorithm used an i...
journal_title:Medical & biological engineering & computing
pub_type: 临床试验,杂志文章
doi:10.1007/BF02347706
更新日期:2002-01-01 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
pub_type: 杂志文章
doi:10.1007/BF02347697
更新日期:2002-01-01 00:00:00
abstract::It is acknowledged that the first heart sound S1 consists of two major, high-frequency components M1 and T1, corresponding, respectively, to the vibrations of the mitral and tricuspid valves and their surrounding tissues following valve closure in early systole. In this study, the matching pursuit (MP) method was used...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345436
更新日期:2001-11-01 00:00:00
abstract::The aim of the study is to determine the effects of wound, patient and treatment attributes on the wound healing rate and to propose a system for wound healing rate prediction. Predicting the wound healing rate from the initial wound, patient and treatment data collected in a database of 300 chronic wounds is not poss...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345144
更新日期:2001-09-01 00:00:00
abstract::A thin-walled capsule, modelled as an incompressible liquid droplet contained in a thin flexible membrane, was allowed to adhere onto a rigid substrate. The contact mechanics were formulated, based on linear elasticity, to portray quantitatively the relationships between osmotic inflation, contact area and angle, memb...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345154
更新日期:2001-09-01 00:00:00
abstract::Axial and transverse components of liquid velocity are measured by laser Doppler anemometer in a perspex tube that has been deformed at one point to resemble the shape of the throat of a partially collapsed flexible tube, conveying fluid while being compressed externally. The Reynolds number is 5900. The flow down-str...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345363
更新日期:2001-07-01 00:00:00
abstract::It is proposed that myo-electric signals can be used to augment conventional speech-recognition systems to improve their performance under acoustically noisy conditions (e.g. in an aircraft cockpit). A preliminary study is performed to ascertain the presence of speech information within myo-electric signals from facia...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345373
更新日期:2001-07-01 00:00:00
abstract::Automatic identification of landmarks in cephalometry is very important and useful for orthognathic surgery. A computerised automatic cephalometric analysis system (CACAS), based on image processing, is presented. For an original X-ray image, median filtering and histogram equalisation are used to improve image qualit...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345280
更新日期:2001-05-01 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
pub_type: 杂志文章
doi:10.1007/BF02345290
更新日期:2001-05-01 00:00:00
abstract::Several 3D reconstruction techniques deriving from stereoradiographic DLT have been presented during the last 15 years, but these techniques have usually been limited in accuracy because of the small number of corresponding anatomical landmarks identified on both radiographs. A new technique has recently been proposed...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344797
更新日期:2001-03-01 00:00:00
abstract::This work addresses the problem of estimating the conduction velocity (CV) of single motor unit (MU) action potentials from surface EMG signals detected with linear electrode arrays during voluntary muscle contractions. In ideal conditions, that is without shape or scale changes of the propagating signals and with add...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344807
更新日期:2001-03-01 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
pub_type: 杂志文章
doi:10.1007/BF02345272
更新日期:2001-01-01 00:00:00
abstract::A method for making a current-ratio map to determine the ischaemic area of angina pectoris (AP) patients has been developed. This method uses a current-arrow map calculated using a ORS wave from 64-channel magnetocardiogram (MCG) signals. The current-ratio map can be calculated from the ratio of an exercise-induced cu...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345263
更新日期:2001-01-01 00:00:00
abstract::The use of piezo-resistive uni-axial accelerometer signals in gait analysis is complicated by the fact that the measured signal is composed of different types of acceleration. The aim of the study is to obtain insight into the signal from a tangential accelerometer attached to the thigh during walking. Six subjects wa...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02344868
更新日期:2000-11-01 00:00:00
abstract::The regulation of cerebral blood flow (CBF) following changes in arterial blood pressure (ABP) and end-tidal pCO2 (EtCO2) are of clinical interest in assessing cerebrovascular reserve capacity. Linear finite-impulse-response modelling is applied to ABP, EtCO2 and CBF velocity (CBFV, from transcranial Doppler measureme...
journal_title:Medical & biological engineering & computing
pub_type: 杂志文章
doi:10.1007/BF02345749
更新日期:2000-09-01 00:00:00