Microfluidics for flow cytometric analysis of cells and particles.

abstract：:Non-contact vital sign monitoring enables the estimation of vital signs, such as heart rate, respiratory rate and oxygen saturation (SpO2), by measuring subtle color changes on the skin surface using a video camera. For patients in a hospital ward, the main challenges in the development of continuous and robust non-co...

journal_title：Physiological measurement

authors： Chaichulee S,Villarroel M,Jorge J,Arteta C,McCormick K,Zisserman A,Tarassenko L

更新日期：2019-12-02 00:00:00

abstract：:In this study, the selection of coil configuration parameters (coil radius and coil centre shift) for induced current EIT using circular coils is investigated. An alternative coil configuration is suggested, which produces approximately linear (spatially) magnetic fields in order to strengthen the currents in the cent...

journal_title：Physiological measurement

authors： Gençer NG,Ider YZ

更新日期：1994-05-01 00:00:00

abstract：BACKGROUND AND OBJECTIVE:Walking is a complex human behavior, usually performed in a dynamic environment. Gait parameters are thought to reflect this complexity. Re-Step™ is a therapy system in the form of a computerized shoe, originally developed for the training and rehabilitation of individuals with brain damage. Th...

journal_title：Physiological measurement

authors： Koren Y,Raanan Y,Parmet Y,Bar-Haim S

更新日期：2018-04-26 00:00:00

abstract：:A new method for the measurement of pulmonary gas exchange during inhalational anaesthesia is described which measures fresh gas and exhaust gas flows using carbon dioxide as an extractable marker gas. The theoretical precision of the method was compared by Monte Carlo modelling with other approaches which use marker ...

journal_title：Physiological measurement

authors： Peyton PJ,Robinson GJ,Terry D,Junor PA

更新日期：2004-02-01 00:00:00

abstract：:Cooperative sensors is a novel measurement architecture that allows the acquiring of biopotential signals on patients in a comfortable and easy-to-integrate manner. The novel sensors are defined as cooperative in the sense that at least two of them work in concert to measure a target physiological signal, such as a mu...

journal_title：Physiological measurement

authors： Rapin M,Proença M,Braun F,Meier C,Solà J,Ferrario D,Grossenbacher O,Porchet JA,Chételat O

更新日期：2015-04-01 00:00:00

abstract：:A gamma fit facilitates smoothing and extrapolation of distorted tracer-dilution curves in blood flow studies. Theoretically based empirical estimators were developed as simple alternatives to direct regression approaches from simulated gamma distributions with a wide range of shape asymmetry. Key curve features of pe...

journal_title：Physiological measurement

authors： Lopatatzidis A,Millard RK

更新日期：2001-11-01 00:00:00

abstract：:High-frequency (HF) oscillations in RR interval from 0.15-0.40 Hz are widely accepted as a measure of cardiac vagal outflow but the HF/RR relationship appears complex, particularly with longer RR intervals. The aim of this study was to evaluate the HF/RR interval relationship during free and paced breathing. HF power ...

journal_title：Physiological measurement

authors： Sandercock G,Gladwell V,Dawson S,Nunan D,Brodie D,Beneke R

更新日期：2008-07-01 00:00:00

abstract：OBJECTIVE:Plots of blood volume measurements over time (profiles) may identify euvolemia during fluid removal for acute heart failure. We assessed agreement between two noninvasive measurements of blood volume profiles during mechanical fluid removal, which exemplifies the interstitial fluid shifts that occur during di...

journal_title：Physiological measurement

authors： Lucas BP,D'Addio A,Block C,Manning H,Remillard B,Leiter JC

更新日期：2019-07-01 00:00:00

abstract：:Multiple frequency bio-electrical impedance analysis (MFBIA) may be useful for monitoring fluid balance in newborn infants or to provide early prediction of the outcome following perinatal asphyxia. A reference range of data is needed for identification of babies with abnormal impedance values. This was a cross-sectio...

journal_title：Physiological measurement

authors： Healy GN,Lingwood BE

更新日期：2006-11-01 00:00:00

abstract：:Urinary catheters (drainage tubes) are in widespread use. The most common type of long-term catheter is the Foley, which is made from natural or synthetic rubber. Foley catheters are passed into the bladder via the urethra or the suprapubic puncture channel (through the abdominal wall). A simulator for the abdominal w...

journal_title：Physiological measurement

authors： Coveney VA,Gröver D

更新日期：2001-08-01 00:00:00

abstract：:A new method to image and quantify intra-abdominal haemorrhage using electrical impedance tomography (EIT) was tested in vivo. Supine peritoneal dialysis patients were monitored using an 8-electrode hemiarray placed on the anterior abdomen. EIT measurements were recorded using the EPack II data acquisition system befo...

journal_title：Physiological measurement

authors： Tucker AS,Ross EA,Paugh-Miller J,Sadleir RJ

更新日期：2011-02-01 00:00:00

abstract：:The back-projected independent components (BICs) of single-trial, auditory P300 and contingent negative variation (CNV) evoked potentials (EPs) were derived using independent component analysis (ICA) and cluster analysis. The method was tested in simulation including a study of the electric dipole equivalents of the s...

journal_title：Physiological measurement

authors： Jervis B,Belal S,Camilleri K,Cassar T,Bigan C,Linden DE,Michalopoulos K,Zervakis M,Besleaga M,Fabri S,Muscat J

更新日期：2007-08-01 00:00:00

abstract：:This paper represents a reconstruction algorithm using a direct sensitivity matrix (DSM) approach for fast 3D image reconstruction in electrical impedance imaging. The boundary element method (BEM) is used in the construction of this matrix. The first images of a conductivity perturbation inside a sphere are reconstru...

journal_title：Physiological measurement

authors： Morucci JP,Granié M,Lei M,Chabert M,Marsili PM

更新日期：1995-08-01 00:00:00

abstract：:In order to detect minute amounts of glucose in diluted urine, we applied the Raman spectroscopy method. To simulate abnormal diluted urine in a toilet bowl, we diluted normal urine ten-fold with water and added glucose up to 8 mg dl(-1). Data were collected using a low-resolution Raman spectrometer that was preproces...

journal_title：Physiological measurement

authors： Park C,Kim K,Choi J,Park K

更新日期：2007-05-01 00:00:00

abstract：:Electrical impedance tomography (EIT) has shown significant promise for lung imaging. One key challenge for EIT in this application is the movement of electrodes during breathing, which introduces artefacts in reconstructed images. Various approaches have been proposed to compensate for electrode movement, but no comp...

journal_title：Physiological measurement

authors： Biguri A,Grychtol B,Adler A,Soleimani M

更新日期：2015-06-01 00:00:00

abstract：:Electrical impedance spectroscopy has been developed as a potential method for the diagnosis of carcinoma in epithelial tissues. An understanding of the influence of structural changes in the tissue on the properties measured using this technique is essential for interpreting measured data and optimization of probe de...

journal_title：Physiological measurement

authors： Walker DC,Smallwood RH,Keshtar A,Wilkinson BA,Hamdy FC,Lee JA

更新日期：2005-06-01 00:00:00

abstract：:Temporal changes in the impedance spectra of bioelectrodes in contact with skin provide useful data for comparisons between differing electrode materials and skin preparation methods. Traditional impedance measuring systems employ swept frequency methods which will distort results in the impedance spectra of a sample ...

journal_title：Physiological measurement

authors： Searle A,Kirkup L

更新日期：1999-02-01 00:00:00

abstract：:In this paper we present a method for recognising three fundamental movements of the human arm (reach and retrieve, lift cup to mouth, rotation of the arm) by determining the orientation of a tri-axial accelerometer located near the wrist. Our objective is to detect the occurrence of such movements performed with the ...

journal_title：Physiological measurement

authors： Biswas D,Corda D,Baldus G,Cranny A,Maharatna K,Achner J,Klemke J,Jöbges M,Ortmann S

更新日期：2014-09-01 00:00:00

abstract：OBJECTIVE:To compare a novel cardiovascular magnetic resonance technique for the assessment of left ventricular (LV) mechanical discoordination by characterizing the endocardial center motion (ECM) in short-axis cine MRI in healthy volunteers and heart failure patients with left bundle branch block (HF-LBBB). APPROACH...

journal_title：Physiological measurement

authors： Saporito S,Houthuizen P,Aben JMM,Westenberg JJM,van Den Bosch HCM,van Assen HC,Mischi M

更新日期：2018-02-28 00:00:00

abstract：:An analytic solution of the potential distribution on a 2D homogeneous disk for electrical impedance tomography under the complete electrode model is expressed via an infinite system of linear equations. For the shunt electrode model with two electrodes, our solution coincides with the previously derived solution expr...

journal_title：Physiological measurement

authors： Demidenko E

更新日期：2011-09-01 00:00:00

abstract：:External defibrillation requires the application of high voltage electrical impulses via large external electrodes, placed on selected locations on the thorax surface. The position of the electrodes is one of the major determinants of the transthoracic impedance (TTI) which influences the intracardiac current flow dur...

journal_title：Physiological measurement

authors： Krasteva V,Matveev M,Mudrov N,Prokopova R

更新日期：2006-10-01 00:00:00

abstract：:Extension of the frequency range of electrical impedance myography (EIM) to 2 MHz discloses a major rise in the reactance of muscle above 3-500 kHz, together with a slow decrease in the resistance consonant with the Kramers-Kronig relations. This 'upturn' phenomenon is found when the distant current electrode configur...

journal_title：Physiological measurement

authors： Shiffman CA,Kashuri H,Aaron R

更新日期：2008-06-01 00:00:00

abstract：:Balance is the ability to maintain equilibrium while sitting or standing. There are a number of different methods which are used to assess balance: technical methods such as sway magnetometry, ataxia meter and force platforms, and clinical methods such as the functional reach test, Berg balance test and fall risk inde...

journal_title：Physiological measurement

authors： Browne J,O'Hare N

更新日期：2000-11-01 00:00:00

abstract：:Agitation is a significant problem in the intensive care unit (ICU), affecting 71% of sedated adult patients during 58% of ICU patient-days (Fraser and Riker 2001 NY Health-Syst. Pharm. 20 17-24). Subjective scale-based assessment methods are currently used to assess the level of patient agitation, but are limited in ...

journal_title：Physiological measurement

authors： Chase JG,Starfinger C,Lam Z,Agogue F,Shaw GM

更新日期：2004-08-01 00:00:00

abstract：:Neural gastric electrical stimulation (NGES) is a new method for invoking gastric contractions under microprocessor control. However, optimization of this technique using feedback mechanisms to minimize power consumption and maximize effectiveness has been lacking. The present pilot study proposes a prototype feedback...

journal_title：Physiological measurement

authors： Aelen P,Jurkov A,Aulanier A,Mintchev MP

更新日期：2009-03-01 00:00:00

abstract：:There are currently no objective means of quantifying chest wall vibrations during manual physiotherapy. The aims of the study were to (i) develop a method to quantify physiotherapy-applied forces and simultaneous changes in respiratory flow and pressure, (ii) assess the feasibility of using this method in ventilated ...

journal_title：Physiological measurement

authors： Gregson RK,Stocks J,Petley GW,Shannon H,Warner JO,Jagannathan R,Main E

更新日期：2007-09-01 00:00:00

abstract：OBJECTIVE:Non-contact physiological measurement is a growing research area that allows capturing vital signs such as heart rate (HR) and breathing rate (BR) comfortably and unobtrusively with remote devices. However, most of the approaches work only in bright environments in which subtle photoplethysmographic and balli...

journal_title：Physiological measurement

authors： Chen W,Hernandez J,Picard RW

更新日期：2018-10-30 00:00:00

abstract：:In electrical impedance tomography (EIT) two-dimensional models continue to be applied despite their known inability to provide correct reconstruction. In this paper, a reconstruction algorithm that assumes a translationally invariant conductivity distribution is described. A more precise forward solver is obtained by...

journal_title：Physiological measurement

authors： Jerbi K,Lionheart WR,Vauhkonen PJ,Vauhkonen M

更新日期：2000-02-01 00:00:00

abstract：:Twenty-nine patients were monitored overnight for breathing distress patterns during postoperative analgesia. Nasal flow apnoea monitoring and pulse oximetry data were recorded at 50 Hz. Respiratory inductive plethysmography (RIP) tracked tidal volume (TV) thoracoabdominal motion, and supplemented the flow monitoring ...

journal_title：Physiological measurement

authors： Millard RK

更新日期：1999-05-01 00:00:00

abstract：:The aim of the study was to investigate whether body mass index (BMI) influences the estimation of extracellular volume (ECV) in hemodialysis (HD) patients when using segmental bioimpedance analysis (SBIA) compared to wrist-to-ankle bioimpedance analysis (WBIA) during HD with ultrafiltration (UF). Twenty five HD patie...

journal_title：Physiological measurement

authors： Carter M,Morris AT,Zhu F,Zaluska W,Levin NW

更新日期：2005-04-01 00:00:00