Measuring dissimilarity between respiratory effort signals based on uniform scaling for sleep staging.

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：:High-frequency percussive ventilation (HFPV) may be defined as flow-regulated time-cycled ventilation that creates controlled pressure and delivers a series of high-frequency subtidal volumes in combination with low-frequency breathing cycles. In recent years, the usefulness of HFPV has been clinically assessed as an ...

journal_title：Physiological measurement

authors： Riscica F,Lucangelo U,Ferluga M,Accardo A

更新日期：2011-06-01 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：:Electrocardiograms (ECGs) recorded from patients in intensive care were investigated to quantify any relationship between ECG signal quality and false monitoring alarms. False alarms are a considerable problem for nursing and medical staff as they distract from clinical care, and are also a problem for patients as the...

journal_title：Physiological measurement

authors： Tsimenidis C,Murray A

更新日期：2016-08-01 00:00:00

abstract：:Current methods for analysing foetal heart rate (FHR) patterns have yet to meet their full potential in the recognition of hypoxia in the foetus. Following the recent suggestion that fractal analysis can be applied to FHR recordings, the current paper describes a method for distinguishing two simultaneous fractal dime...

journal_title：Physiological measurement

authors： Gough NA

更新日期：1993-08-01 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：OBJECTIVE:Video and sound acquisition and processing technologies have seen great improvements in recent decades, with many applications in the biomedical area. The aim of this paper is to review the overall state of the art of advances within these topics in paediatrics and to evaluate their potential application for ...

journal_title：Physiological measurement

authors： Cabon S,Porée F,Simon A,Rosec O,Pladys P,Carrault G

更新日期：2019-02-26 00:00:00

abstract：:In nine healthy subjects, magnetic resonance imaging was used to measure blood flow waveforms in the common (CCA), internal (ICA) and external (ECA) carotid arteries. Useful data were acquired from 14 carotid arteries in total. Flow rates were determined from regions of interest placed over the arteries in CINE-phase ...

journal_title：Physiological measurement

authors： Marshall I,Papathanasopoulou P,Wartolowska K

更新日期：2004-06-01 00:00:00

abstract：UNLABELLED:The study created an 'ex vivo' model to test different algorithms for measurements of mucosal haemoglobin saturation with visible light spectrophotometry (VLS). The model allowed comparison between algorithms, but it also allowed comparison with co-oximetry using a 'gold standard' method. This has not been d...

journal_title：Physiological measurement

authors： Gade J,Greisen G

更新日期：2016-09-01 00:00:00

abstract：:Electrical impedance tomography (EIT) measures the conductivity distribution within an object based on the current applied and voltage measured at surface electrodes. Thus, EIT images are sensitive to electrode properties (i.e. contact impedance, electrode area and boundary shape under the electrode). While some of th...

journal_title：Physiological measurement

authors： Boyle A,Adler A

更新日期：2011-07-01 00:00:00

abstract：:Impedance cardiography (ICG) has been proposed to estimate the stroke volume (SV) and cardiac output (CO) in various medical indications. The aim of this study was to explore the reliability of ICG during pregnancy with respect to SV and CO measurements. Blood pressure, heart rate and thoracic impedance were monitored...

journal_title：Physiological measurement

authors： Moertl MG,Schlembach D,Papousek I,Hinghofer-Szalkay H,Weiss EM,Lang U,Lackner HK

更新日期：2012-06-01 00:00:00

abstract：:We used finite element analysis to study the relationship between the intraventricular blood conductance and the right ventricular volume. Previous studies reported a quasi-linear dependence between these two quantities. We quantified the effects of the resistivities of the surrounding tissues (e.g. heart wall, lungs)...

journal_title：Physiological measurement

authors： Panescu D,Webster JG,Stratbucker RA

更新日期：1994-02-01 00:00:00

abstract：:The most common method of clinical measurement of arterial blood pressure is by means of the cuff sphygmomanometer. This instrument has provided fundamental quantitative information on arterial pressure in individual subjects and in populations and facilitated estimation of cardiovascular risk related to levels of blo...

journal_title：Physiological measurement

authors： Avolio AP,Butlin M,Walsh A

更新日期：2010-01-01 00:00:00

abstract：:Electrical impedance tomography (EIT) estimates an image of change in electrical properties within a body from stimulations and measurements at surface electrodes. There is significant interest in EIT as a tool to monitor and guide ventilation therapy in mechanically ventilated patients. In lung EIT, the EIT inverse p...

journal_title：Physiological measurement

authors： Grychtol B,Adler A

更新日期：2014-06-01 00:00:00

abstract：:This review describes recent developments in microfabricated flow cytometers and related microfluidic devices that can detect, analyze, and sort cells or particles. The high-speed analytical capabilities of flow cytometry depend on the cooperative use of microfluidics, optics and electronics. Along with the improvemen...

journal_title：Physiological measurement

authors： Huh D,Gu W,Kamotani Y,Grotberg JB,Takayama S

更新日期：2005-06-01 00:00:00

abstract：:In this work, we describe a beat-by-beat method for assessing the clinical utility of pulsatile waveforms, primarily recorded from cardiovascular blood volume or pressure changes, concentrating on the photoplethysmogram (PPG). Physiological blood flow is nonstationary, with pulses changing in height, width and morphol...

journal_title：Physiological measurement

authors： Li Q,Clifford GD

更新日期：2012-09-01 00:00:00

abstract：OBJECTIVE:Though the mutual influence of cardiovascular and respiratory rhythms in healthy newborns has been documented, its full characterization is still pending. In general, the activity of many physiological subsystems has a well-expressed rhythmic character, and often an interdependency between physiological rhyth...

journal_title：Physiological measurement

authors： Lucchini M,Pini N,Fifer WP,Burtchen N,Signorini MG

更新日期：2018-06-19 00:00:00

abstract：:This observational study investigated digital auscultation for the purpose of assessing the clinical feasibility of monitoring vascular sounds in pregnancy. The study was performed at the Regional Hospital Viborg, Denmark, and included 29 pregnant women, 10 non-pregnant women and 10 male participants. Digital ausculta...

journal_title：Physiological measurement

authors： Riknagel D,Dinesen B,Zimmermann H,Farlie R,Schmidt S,Toft E,Struijk JJ

更新日期：2016-07-01 00:00:00

abstract：:This study compared sitting time measured by a questionnaire (International Physical Activity Questionnaire; IPAQ) with concurrently measured objective sitting time from an accelerometer-based measure of thigh inclination (activPAL).Adults (n = 69), wore an activPAL for a week, and then completed the long-form 7 d rec...

journal_title：Physiological measurement

authors： Chastin SF,Culhane B,Dall PM

更新日期：2014-11-01 00:00:00

abstract：:Muscle injuries in the lower limb are common among professional football players. Classification is made according to severity and is diagnosed with radiological assessment as: grade I (minor strain or minor injury), grade II (partial rupture, moderate injury) and grade III (complete rupture, severe injury). Tetrapola...

journal_title：Physiological measurement

authors： Nescolarde L,Yanguas J,Lukaski H,Alomar X,Rosell-Ferrer J,Rodas G

更新日期：2015-01-01 00:00:00

abstract：:ECG-gated electrical impedance tomographic spectroscopy (EITS) measurements of the lungs were taken on seven normal subjects in the frequency range 9.6 kHz to 614.4 kHz. The results show that in late systole the resistivity p' relative to the R-wave (i.e. p' = 1 at the R-wave) decreases consistently within the lung. I...

journal_title：Physiological measurement

authors： Nopp P,Zhao TX,Brown BH,Wang W

更新日期：1996-11-01 00:00:00

abstract：OBJECTIVE:Accurate bladder size estimation is an important clinical parameter that assists physicians, enabling them to provide better treatment for patients who are suffering from urinary incontinence. Electrical impedance tomography (EIT) is a non-invasive medical imaging method that estimates organ boundaries assumi...

journal_title：Physiological measurement

authors： Konki SK,Khambampati AK,Sharma SK,Kim KY

更新日期：2020-12-18 00:00:00

abstract：:The assessment and diagnosis of lower limb peripheral arterial occlusive disease (PAOD) is important since it can lead progressively to disabling claudication, ischaemic rest pain and gangrene. Historically, the first assessment has been palpation of the peripheral pulse since it can become damped, delayed and diminis...

journal_title：Physiological measurement

authors： Allen J,Oates CP,Lees TA,Murray A

更新日期：2005-10-01 00:00:00

abstract：:The relation between the right-side (RS) electrical impedance phase angle (PA) and segmental PA in five configurations at 50 kHz was analyzed in 23 peritoneal dialysis male patients before complete drainage of the abdominal cavity. The impedance vector (Z/H) components were standardized by the height H of the subjects...

journal_title：Physiological measurement

authors： Nescolarde L,Rosell-Ferrer J,Doñate T

更新日期：2008-09-01 00:00:00

abstract：:We present a method for location of fetal QRS in maternal abdominal ECG recordings. This method's initial, global approach was proposed in the context of the 2013 PhysioNet/Computing in Cardiology Challenge where it was tested on the 447 four channel one-minute recordings.The first step is filtering to eliminate basel...

journal_title：Physiological measurement

authors： Rodrigues R

更新日期：2014-08-01 00:00:00

abstract：:Changes of the heart autonomic balance between morning (8-9 h) and afternoon (14-15 h) measurements were studied in 22 healthy subjects. The selection of these two daytime periods was substantiated by the established higher risk of cardiovascular incidents in the morning and the relative balance of the vegetative nerv...

journal_title：Physiological measurement

authors： Matveev M,Prokopova R,Nachev Ch

更新日期：2003-08-01 00:00:00

abstract：:This paper introduces a new clinical distortion index able to measure the decrease in diagnostic content in compressed echocardiograms. It is calculated using cardiologists' answers to a clinical testbed composed of two types of tests: one blind and the other semi-blind. This index may be used to compare clinical perf...

journal_title：Physiological measurement

authors： Alesanco A,Hernández C,Portolés A,Ramos L,Aured C,García M,Serrano P,García J

更新日期：2009-05-01 00:00:00

abstract：:Peripheral vasculature disease is strongly correlated with cardiovascular-associated mortality. Monitoring circulation health, especially in the peripheral limbs, is vital to detecting clinically significant disease at a stage when it can still be addressed through medical intervention. Electrical impedance tomography...

journal_title：Physiological measurement

authors： Halter R,Hartov A,Paulsen K

更新日期：2008-03-01 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：:A photoplethysmographic (PPG) signal can provide very useful information about a subject's cardiovascular status. Motion artifacts (MAs), which usually deteriorate the waveform of a PPG signal, severely obstruct its applications in the clinical diagnosis and healthcare area. To reduce the MAs from a PPG signal, in the...

journal_title：Physiological measurement

authors： Peng F,Liu H,Wang W

更新日期：2015-10-01 00:00:00