Computerised volumetric analysis of lesions in multiple sclerosis using new semi-automatic segmentation software.

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：:Neural networks are trained to estimate the germination percentages of Plasmopara viticola oospores, overwintered in natural conditions in two viticultural areas in northern Italy, by using climatic (temperature and rainfall) data, as well as the previous germination measurement, as input variables. The 288 available ...

journal_title：Medical & biological engineering & computing

authors： Vercesi A,Sirtori C,Vavassori A,Setti E,Liberati D

更新日期：2000-01-01 00:00:00

abstract：:In recent years, several studies have been focused on the problem of nonthermal interaction between extremely low-frequency (ELF) electromagnetic fields and cell environment at membrane level. In the paper, to analyse the dynamic effects of weak static and harmonic fields on charged particles, some new considerations ...

journal_title：Medical & biological engineering & computing

authors： D'Inzeo G,Galli A,Palombo A

更新日期：1993-07-01 00:00:00

abstract：:Aortic stiffness measurement is well recognized as an independent predictor of cardiovascular mortality and morbidity. Recently, a simple method has been proposed for the evaluation of the local aortic stiffness (AoStiff) using a non-invasive bioelectrical impedance (BI) technique. This approach relies on a novel inte...

journal_title：Medical & biological engineering & computing

authors： Collette M,Lalande A,Willoteaux S,Leftheriotis G,Humeau A

更新日期：2011-04-01 00:00:00

abstract：:Precise segmentation of stroke lesions from brain magnetic resonance (MR) images poses a challenging task in automated diagnosis. In this paper, we proposed a new method called watershed-based lesion segmentation algorithm (WLSA), which is a novel intensity-based segmentation technique used to delineate infarct lesion...

journal_title：Medical & biological engineering & computing

authors： Subudhi A,Jena S,Sabut S

更新日期：2018-05-01 00:00:00

abstract：:This study is based on the hypothesis that the pressure within the arterial network can be usefully decomposed as the sum of a reservoir pressure and an excess pressure. The reservoir pressure waveform is defined to be the same in each vessel but delayed by the wave travel time from the root of the aorta. Using calcul...

journal_title：Medical & biological engineering & computing

authors： Parker KH,Alastruey J,Stan GB

更新日期：2012-04-01 00:00:00

abstract：:The aim of this study was to design a new approach for the acquisition of regional radial strain from the middle portion of the interventricular septum. We designed and wrote a program in Matlab (computer-assisted method) for use on a personal computer so that the septum thickness throughout the cardiac cycle could be...

journal_title：Medical & biological engineering & computing

authors： Moladoust H,Mokhtari-Dizaji M,Ojaghi-Haghighi Z,D'hooge J,Noohi F,Khaledifar A,Khajavi A

更新日期：2007-09-01 00:00:00

abstract：:Left ventricular volume calibration based on the conductance catheter depends on the correct determination of the parallel conductance (Gp). Baan's saline manoeuvre procedure leads to Gp by finding the end-systolic (Ges) and end-diastolic (Ged) conductances, for each beat of the dilution curve rising limb. After plott...

journal_title：Medical & biological engineering & computing

authors： Herrera MC,Olivera JM,Valentinuzzi ME

更新日期：1999-03-01 00:00:00

abstract：:The first in vivo evaluation of a pO2 sensor constructed with a novel copolymer is described. The performance of the sensor is assessed under dynamic conditions in vitro and in vivo. This sensor is more stable and reliable than the control sensor with a heparin-treated polyethylene membrane. ...

journal_title：Medical & biological engineering & computing

authors： Zhang S,Wright G,Kingston MA,Rolfe P

更新日期：1996-07-01 00:00:00

abstract：:A computer-assisted human peripheral blood leukocyte image classification method based on Siamese network is proposed. Firstly, a Siamese network with two identical convolutional neural network (CNN) sub-networks and a logistic regression for leukocyte five classification is designed, which can learn not only distingu...

journal_title：Medical & biological engineering & computing

authors： Wang Y,Cao Y

更新日期：2020-07-01 00:00:00

abstract：:Steady-state visual evoked potentials (SSVEPs) are widely employed in brain-computer interface (BCI) applications, especially to control machines. However, the use of SSVEPs leads to eye fatigue and causes lower accuracy over the long term, particularly when multi-commands are required. Therefore, this paper proposes ...

journal_title：Medical & biological engineering & computing

authors： Punsawad Y,Wongsawat Y

更新日期：2017-06-01 00:00:00

abstract：:Stiffness of the arterial wall and atherosclerotic plaque components is a determinant of the stress field within plaques, which has been suggested to be an indicator of plaque vulnerability. The diversity and inhomogeneous structure of atherosclerotic lesions complicate the characterization of plaque components. In th...

journal_title：Medical & biological engineering & computing

authors： Rezvani-Sharif A,Tafazzoli-Shadpour M,Avolio A

更新日期：2019-03-01 00:00:00

abstract：:A method for the estimation of medium rate transitions of non-stationary electroencephalograms (EEG) is proposed. The method is applicable to such EEG dynamics that are between (a) fast transitions for which segmentation procedures are used and (b) slow transitions for which adaptive filters work properly. The estimat...

journal_title：Medical & biological engineering & computing

authors： Hiltunen JK,Karjalainen PA,Partanen J,Kaipio JP

更新日期：1999-05-01 00:00:00

abstract：:A compression algorithm for electrocardiogram signals is presented, based on an auto-associative neural network. Issues of weight and activation coding are considered, and compression performances of various network sizes are compared. A unique feature is the performance improvement achieved using DC level removal. A ...

journal_title：Medical & biological engineering & computing

authors： Hamilton DJ,Thomson DC,Sandham WA

更新日期：1995-11-01 00:00:00

abstract：:The aim of this work is to quantify individual and regional differences in the relative concentration of gamma-aminobutyric acid (GABA) in human brain with in vivo magnetic resonance spectroscopy. Spectral editing Mescher-Garwood point resolved spectroscopy (MEGA-PRESS) sequence and GABA analysis toolkit (Gannet) were...

journal_title：Medical & biological engineering & computing

authors： Chen M,Liao C,Chen S,Ding Q,Zhu D,Liu H,Yan X,Zhong J

更新日期：2017-06-01 00:00:00

abstract：:Gastrointestinal stimulator implants have recently shown positive results in treating obesity. However, the implantation currently requires an invasive surgical procedure. Endoscopy could be used to place the gastric stimulator in the stomach, hence avoiding the riskier surgery. The implant then needs to go through th...

journal_title：Medical & biological engineering & computing

authors： Lonys L,Vanhoestenberghe A,Julémont N,Godet S,Delplancke MP,Mathys P,Nonclercq A

更新日期：2015-04-01 00:00:00

abstract：:Fetal heart rate (FHR) monitoring is used routinely in labor, but conventional methods have a limited capacity to detect fetal hypoxia/acidosis. An exploratory study was performed on the simultaneous assessment of maternal heart rate (MHR) and FHR variability, to evaluate their evolution during labor and their capacit...

journal_title：Medical & biological engineering & computing

authors： Gonçalves H,Pinto P,Silva M,Ayres-de-Campos D,Bernardes J

更新日期：2016-04-01 00:00:00

abstract：:Uniaxial stress-strain data were obtained from in vitro experiments on 20 porcine livers for compressions, elongations and cycles of compression and then elongation. There were about 70 cylindrical samples, with diameter 7mm and varying height (4-11 mm). The combined compression and elongation test provide a unified f...

journal_title：Medical & biological engineering & computing

authors： Chui C,Kobayashi E,Chen X,Hisada T,Sakuma I

更新日期：2004-11-01 00:00:00

abstract：:Musculoskeletal models have been developed to estimate internal loading on the human skeleton, which cannot directly be measured in vivo, from external measurements like kinematics and external forces. Such models of the shoulder and upper extremity have been used for a variety of purposes, ranging from understanding ...

journal_title：Medical & biological engineering & computing

authors： Bolsterlee B,Veeger DH,Chadwick EK

更新日期：2013-09-01 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：:Architectural distortion is a subtle abnormality in mammograms, and a source of overlooking errors by radiologists. Computer-aided diagnosis (CAD) techniques can improve the performance of radiologists in detecting masses and calcifications; however, most CAD systems have not been designed to detect architectural dist...

journal_title：Medical & biological engineering & computing

authors： Rangayyan RM,Ayres FJ

更新日期：2006-10-01 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：: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

authors： Cerveri P,Rabuffetti M,Pedotti A,Ferrigno G

更新日期：2003-03-01 00:00:00

abstract：:To evaluate the possibility of respiratory-volume measurement using photoplethysmography (PPG), PPG signals from 16 normal volunteers are collected, and the respiratory-induced intensity variations (RIIV) are digitally extracted. The RIIV signals are studied while respiratory volume is varied. Furthermore, respiratory...

journal_title：Medical & biological engineering & computing

authors： Johansson A,Oberg PA

更新日期：1999-01-01 00:00:00

abstract：:Preprocessing, binning and dataset subsampling are investigated with regard to simultaneous maximisation of the speed, accuracy and robustness of CT-3D rotational angiography (3DRA) registration. Clinical diagnosis and treatment can both take advantage of this integration, because 3DRA allows the shape of vessel struc...

journal_title：Medical & biological engineering & computing

authors： Stancanello J,Cavedon C,Francescon P,Cerveri P,Ferrigno G,Causin F,Colombo F

更新日期：2005-09-01 00:00:00

abstract：:Classification of cancerous genes from microarray data is an important research area in bioinformatics. Large amount of microarray data are available, but it is very costly to label them. This paper proposes an active learning model, a semi-supervised classification approach, to label the microarray data using which p...

journal_title：Medical & biological engineering & computing

authors： De R,Chakraborty A,Chatterjee A,Sarkar R

更新日期：2020-10-01 00:00:00

abstract：:Many studies concerning the internal work of human motion have used two-dimensional kinematic models to estimate kinetic energy of the segments. The generalised co-ordinate concept has been applied here to a simultaneous and bilateral gait analysis. A three-dimensional kinematic model based on quaternions has been dev...

journal_title：Medical & biological engineering & computing

authors： Aissaoui R,Allard P,Junqua A,Frossard L,Duhaime M

更新日期：1996-11-01 00:00:00

abstract：:Sperm morphology, as an indicator of fertility, is a critical tool in semen analysis. In this study, a smartphone-based hybrid system that fully automates the sperm morphological analysis is introduced with the aim of eliminating unwanted human factors. Proposed hybrid system consists of two progressive steps: automat...

journal_title：Medical & biological engineering & computing

authors： Ilhan HO,Sigirci IO,Serbes G,Aydin N

更新日期：2020-05-01 00:00:00

abstract：:The effect of flow direction on the morphology of cultured bovine aortic endothelial cells is studied. Fully confluent endothelial cells cultured on glass were subjected to a fluid-imposed shear stress of 2 Pa for 20 min and 24 h using a parallel plate flow chamber. Experiments on shear flow exposure were performed fo...

journal_title：Medical & biological engineering & computing

authors： Kataoka N,Ujita S,Sato M

更新日期：1998-01-01 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