A practical technique for measuring human biofluid conductivity using high gain-frequency characteristics.

Abstract:

:Currently, the study of ion composition and performance in human biofluids plays an important role in biomedical engineering research and technology. This field may become universal for human diagnostics; it allows early detection of different diseases in humans by measuring changes in ion behaviour in human biofluids. Practical experiments were conducted to analyse the liquid composite electrolyte conductivity in an alternating electric current field. These experiments allow the contribution of separate types of ions to the overall conductivity to be estimated. The method of estimating the concentration of active ions contained in biofluids is also introduced; it illustrates the possibility of performing qualitative and quantitative analysis over a wide range of concentrations and compositions. The authors present a procedure to determine the concentration of active liquid ions based on conductivity gain-frequency characteristic curve tracing. The experimental results validate the practical use of the proposed method. The results of this research are promising, and further investigation is required to further improve the method.

journal_name

Med Eng Phys

authors

Al-Nabulsi JI,Aloquili O,Ausheva V,Yuldashev ZM

doi

10.1016/j.medengphy.2011.04.007

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

1048-55

issue

9

eissn

1350-4533

issn

1873-4030

pii

S1350-4533(11)00088-9

journal_volume

33

pub_type

杂志文章
  • Design and testing of a high-speed treadmill to measure ground reaction forces at the limit of human gait.

    abstract::Investigations focused on the gait and physiological limits of human speed have been on-going for more than a century. However, due to measurement limitation a kinetic understanding of the foot-ground collision and how these dynamics differ between individuals to confer speed and limit gait has only recently begun to ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2015.04.009

    authors: Bundle MW,Powell MO,Ryan LJ

    更新日期:2015-09-01 00:00:00

  • Influence of mouth opening on oropharyngeal humidification and temperature in a bench model of neonatal continuous positive airway pressure.

    abstract::Clinical studies show that non-invasive respiratory support by continuous positive airway pressure (CPAP) affects gas conditioning in the upper airways, especially in the presence of mouth leaks. Using a new bench model of neonatal CPAP, we investigated the influence of mouth opening on oropharyngeal temperature and h...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2016.12.005

    authors: Fischer HS,Ullrich TL,Bührer C,Czernik C,Schmalisch G

    更新日期:2017-02-01 00:00:00

  • Development and evaluation of an automated stainer for acid-fast bacilli.

    abstract::The current strategy for the control of tuberculosis (TB) relies on early diagnosis, and smear microscopy is an essential component of the laboratory diagnosis of TB in most countries with a high prevalence of the disease. However, even simple smear microscopy examination is far from satisfactory because staining resu...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/s1350-4533(02)00213-8

    authors: Kim SC,Kang SI,Kim DW,Kim SC,Cho SN,Hwang JH,Kim Y,Song SD,Kim YH

    更新日期:2003-05-01 00:00:00

  • Minimization of the knee shear joint load in leg-extension equipment.

    abstract::We developed an analytical biomechanical model for leg-extension equipment and the associated knee-extension/flexion exercises. The shear component, phi(t), of the tibiofemoral joint load was calculated taking into account all the fundamental elements of the equipment mechanics (resistance pad placement, cam/pulley sy...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2007.12.012

    authors: Biscarini A

    更新日期:2008-10-01 00:00:00

  • Validity of an inertial measurement unit to assess pelvic orientation angles during gait, sit-stand transfers and step-up transfers: Comparison with an optoelectronic motion capture system.

    abstract::An inertial measurement unit (IMU) allows kinematic evaluation of human motion with fewer operational constraints than a gold standard optoelectronic motion capture (MOCAP) system. The study's aim was to compare IMU and MOCAP measurements of dynamic pelvic orientation angles during different activities of daily life (...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2015.11.009

    authors: Bolink SA,Naisas H,Senden R,Essers H,Heyligers IC,Meijer K,Grimm B

    更新日期:2016-03-01 00:00:00

  • Development and assessment of a Microsoft Kinect based system for imaging the breast in three dimensions.

    abstract::Three-dimensional surface imaging technologies have been used in the planning and evaluation of breast reconstructive and cosmetic surgery. The aim of this study was to develop a 3D surface imaging system based on the Microsoft Kinect and assess the accuracy and repeatability with which the system could image the brea...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2013.12.018

    authors: Wheat JS,Choppin S,Goyal A

    更新日期:2014-06-01 00:00:00

  • Toward verified and validated FE simulations of a femur with a cemented hip prosthesis.

    abstract:BACKGROUND:Verified and validated CT-based high-order finite element (FE) methods were developed that predict accurately the mechanical response of patient-specific intact femurs. Here we extend these capabilities to human femurs undergoing a total hip replacement using cemented prostheses. METHODS:A fresh-frozen huma...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2012.09.007

    authors: Yosibash Z,Katz A,Milgrom C

    更新日期:2013-07-01 00:00:00

  • An in silico study of the influence of vessel wall deformation on neointimal hyperplasia progression in peripheral bypass grafts.

    abstract::Neointimal hyperplasia (NIH) is a major obstacle to graft patency in the peripheral arteries. A complex interaction of biomechanical factors contribute to NIH development and progression, and although haemodynamic markers such as wall shear stress have been linked to the disease, these have so far been insufficient to...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2019.09.011

    authors: Donadoni F,Bonfanti M,Pichardo-Almarza C,Homer-Vanniasinkam S,Dardik A,Díaz-Zuccarini V

    更新日期:2019-12-01 00:00:00

  • A method for the extraction of an object from a noisy background.

    abstract::The removal of the background from a noisy image to leave the object of interest, with well defined edges, is a difficult task. Images obtained using radioisotopes have low signal-to-noise ratios due to scattered photons, as well as emitted radiation from the background. Moreover, noise is, also, a consequence of the ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/1350-4533(95)00043-7

    authors: Livieratos GN,Chappell PH

    更新日期:1996-03-01 00:00:00

  • Micro-CT evaluation of bone defects: applications to osteolytic bone metastases, bone cysts, and fracture.

    abstract::Bone defects can occur in various forms and present challenges to performing a standard micro-CT evaluation of bone quality because most measures are suited to homogeneous structures rather than ones with spatially focal abnormalities. Such defects are commonly associated with pain and fragility. Research involving bo...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2013.05.016

    authors: Buie HR,Bosma NA,Downey CM,Jirik FR,Boyd SK

    更新日期:2013-11-01 00:00:00

  • Numerical analysis and experimental observation of guidewire motion in a blood vessel model.

    abstract::We have developed a computer-based system to simulate a guidewire in blood vessels for surgical planning, intra-operative assistance, and to facilitate the design of new guidewires. In this study, we compared simulation results with experimental results for validation of the simulation system. First, we inserted a com...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2014.09.012

    authors: Takashima K,Tsuzuki S,Ooike A,Yoshinaka K,Yu K,Ohta M,Mori K

    更新日期:2014-12-01 00:00:00

  • Arbitrary waveform constant current stimulator for long-term wearable applications.

    abstract::Subsensory electrical noise stimulation has been shown to improve sensory perception in humans. However, the majority of this work has been limited to the laboratory due to unavailability of portable body-worn stimulators. In this paper, we present a robust and reliable stimulator, engineered for wearable applications...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2019.04.001

    authors: Breen PP,Serrador JM,Gargiulo GD

    更新日期:2019-06-01 00:00:00

  • Automated robot-assisted assessment for wrist active ranges of motion.

    abstract::The measurement of wrist active range of motion (ROM) is essential for determining the progress of hand functional recovery, which can provide insight into quantitative improvements and enable effective monitoring during hand rehabilitation. Compared with manual methods, which depend on the experience of the therapist...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2019.07.003

    authors: Zhang M,McDaid A,Zhang S,Zhang Y,Xie SQ

    更新日期:2019-09-01 00:00:00

  • A biomechanical model to determine lumbosacral loads during single stance phase in normal gait.

    abstract::A dynamic biomechanical model to determine loads (joint forces) attained at the lumbosacral joint-centre during the stance phase of normal level walking was developed. The biomechanical model was based on rigid free body-segments; namely, the foot, shank, thigh, pelvis and head, arms and trunk (HAT) segments. In this ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/1350-4533(95)90374-k

    authors: Khoo BC,Goh JC,Bose K

    更新日期:1995-01-01 00:00:00

  • A mathematical model of the impact response of the seated subject.

    abstract::A model of the lumbar spine, pelvis and buttocks is developed, based on linear horizontal and vertical systems along with a rotational subsystem. The model can mimic qualitatively different experimental observations of transmission of vibrations from the seat to L3 in the sitting posture. It is concluded that while th...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/1350-4533(95)00062-3

    authors: Broman H,Pope M,Hansson T

    更新日期:1996-07-01 00:00:00

  • A new MR-compatible loading device to study in vivo muscle damage development in rats due to compressive loading.

    abstract::To study the aetiology of pressure ulcers an MR-compatible loading device was developed. Magnetic resonance imaging provides the possibility of non-invasive evaluation of muscle tissue after compressive loading. Pressure was applied to the tibialis anterior region of rats by means of an indenter. The developed MR-comp...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2005.07.005

    authors: Stekelenburg A,Oomens CW,Strijkers GJ,de Graaf L,Bader DL,Nicolay K

    更新日期:2006-05-01 00:00:00

  • Dynamic cerebral autoregulation assessment using an ARX model: comparative study using step response and phase shift analysis.

    abstract::Middle cerebral arterial blood velocity (MCAv) response to spontaneous and manipulated changes of arterial blood pressure (ABP) was studied in eight subjects using a linear autoregressive with exogenous input (ARX) model. ABP and MCAv were measured non-invasively by photoplethysmograph and transcranial Doppler ultraso...

    journal_title:Medical engineering & physics

    pub_type: 临床试验,杂志文章

    doi:10.1016/s1350-4533(03)00015-8

    authors: Liu Y,Birch AA,Allen R

    更新日期:2003-10-01 00:00:00

  • Magnitude and variability of loading on the osseointegrated implant of transfemoral amputees during walking.

    abstract::This study directly measured the load acting on the abutment of the osseointegrated implant system of transfemoral amputees during level walking, and studied the variability of the load within and among amputees. Twelve active transfemoral amputees (age: 54 +/- 12 years, mass: 84.3 +/- 16.3 kg, height: 17.8 +/- 0.10 m...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2007.09.003

    authors: Lee WC,Frossard LA,Hagberg K,Haggstrom E,Gow DL,Gray S,Brånemark R

    更新日期:2008-09-01 00:00:00

  • Liquid ventilation: a mathematical model of gas diffusion in the premature lung.

    abstract::The liquid ventilation (LV) technique was previously demonstrated to be a valuable alternative to ordinary gas ventilation, particularly for newborn patients with severely distressed lungs. This work describes a mathematical model of gas transfer phenomena occurring within the lungs of a preterm newborn baby ventilate...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/s1350-4533(96)00041-0

    authors: Costantino ML,Fiore GB

    更新日期:1997-03-01 00:00:00

  • Can subject-specific single-fibre electrically evoked auditory brainstem response data be predicted from a model?

    abstract::This article investigates whether prediction of subject-specific physiological data is viable through an individualised computational model of a cochlear implant. Subject-specific predictions could be particularly useful to assess and quantify the peripheral factors that cause inter-subject variations in perception. T...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2012.09.001

    authors: Malherbe TK,Hanekom T,Hanekom JJ

    更新日期:2013-07-01 00:00:00

  • Particle image velocimetry study of the celiac trunk hemodynamic induced by continuous-flow left ventricular assist device.

    abstract::Whereas left ventricular assist device (LVAD) is the gold-standard therapy for patients with heart failure, gastrointestinal bleeding is one of the most common complications. LVAD implantation may remarkably impact aortic hemodynamics so that experimental and computational flow analyses can be used to study the diseas...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2017.06.029

    authors: Scardulla F,Bellavia D,D'Acquisto L,Raffa GM,Pasta S

    更新日期:2017-09-01 00:00:00

  • Computation of the elastic properties of a resin impregnated wire mesh by the means of a homogenisation procedure.

    abstract::The present paper presents a homogenisation technique applied to the problem of calculating equivalent material properties of a resin impregnated wire mesh. Although this type of material can be expected to possess, in general, a four-fold axis of rotational symmetry, it was found that a transversally isotropic model ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/s1350-4533(00)00065-5

    authors: Hübsch PF,Middleton J,Knox J

    更新日期:2000-09-01 00:00:00

  • Reliability, validity, and precision of an active stereophotogrammetry system for three-dimensional evaluation of the human torso.

    abstract::To determine the reliability, stability, validity and precision of a stereophotogrammetry (SP) system for use in quantifying the complex three-dimensional structure of the human torso, we performed assessments of the system using images of geometric solids and a human-form mannequin. Analysis of geometric solids revea...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2009.08.011

    authors: Paul SM,Chamberlin AP,Hatt C,Nayak AV,Danoff JV

    更新日期:2009-12-01 00:00:00

  • Effect of wheelchair mass, tire type and tire pressure on physical strain and wheelchair propulsion technique.

    abstract::The purpose of this study was to evaluate the effect of wheelchair mass, solid vs. pneumatic tires and tire pressure on physical strain and wheelchair propulsion technique. 11 Able-bodied participants performed 14 submaximal exercise blocks on a treadmill with a fixed speed (1.11 m/s) within 3 weeks to determine the e...

    journal_title:Medical engineering & physics

    pub_type: 临床试验,杂志文章

    doi:10.1016/j.medengphy.2013.03.019

    authors: de Groot S,Vegter RJ,van der Woude LH

    更新日期:2013-10-01 00:00:00

  • In vitro determination of the passive knee flexion axis: Effects of axis alignment on coupled tibiofemoral motions.

    abstract::The natural passive flexion axis of human cadaveric knees was determined using a technique that minimized coupled tibiofemoral motions (translations and rotations), and the kinematic effects of mal-positioned flexion axes were determined. The femur was clamped in an apparatus that allowed unconstrained tibial motions ...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2019.03.009

    authors: Markolf KL,Yang PR,Joshi NB,Petrigliano FA,McAllister DR

    更新日期:2019-05-01 00:00:00

  • Application of time-varying analysis to diagnostic needle electromyography.

    abstract::Quantification in clinical, diagnostic electromyography (EMG) currently includes motor unit action potential (MUAP) analysis and interference pattern analysis. Early efforts to examine the frequency/power spectra of the interference pattern showed modest value but the technique was not developed further. This paper re...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2011.07.017

    authors: Sheean GL

    更新日期:2012-03-01 00:00:00

  • Exploiting parameter sparsity in model-based reconstruction to accelerate proton density and T(2) mapping.

    abstract::T2 mapping is a powerful noninvasive technique providing quantitative biological information of the inherent tissue properties. However, its clinical usage is limited due to the relative long scanning time. This paper proposed a novel model-based method to address this problem. Typically, we directly estimated the rel...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2014.06.002

    authors: Peng X,Liu X,Zheng H,Liang D

    更新日期:2014-11-01 00:00:00

  • Acoustic power measurement of high-intensity focused ultrasound transducer using a pressure sensor.

    abstract::The acoustic power of high-intensity focused ultrasound (HIFU) is an important parameter that should be measured prior to each treatment to guarantee effective and safe outcomes. A new calibration technique was developed that involves estimating the pressure distribution, calculating the acoustic power using an underw...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2015.01.014

    authors: Zhou Y

    更新日期:2015-03-01 00:00:00

  • Two artificial neural systems for generation of gait swing by means of neuromuscular electrical stimulation.

    abstract::A three-layer artificial neural network was used for adaptive control of gait swing generated by neuromuscular electrical stimulation (NMES) in a spinal cord injured subject. Network inputs consisted of knee and ankle goniometer signals for System 1, and knee and hip angular data for System 2. Controller output was pr...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/s1350-4533(96)00030-6

    authors: Sepulveda F,Granat MH,Cliquet A Jr

    更新日期:1997-01-01 00:00:00

  • The effects of flute shape and thread profile on the insertion torque and primary stability of dental implants.

    abstract::Easy insertion of the implant and stable bone purchase is essential for an ideal dental implantation. At the implant tip, the cutting flutes and conical profile are respectively designed to reduce insertion resistance and facilitate the initial insertion. However, the tapered tip might reduce the self-tapping and bone...

    journal_title:Medical engineering & physics

    pub_type: 杂志文章

    doi:10.1016/j.medengphy.2011.09.021

    authors: Wu SW,Lee CC,Fu PY,Lin SC

    更新日期:2012-09-01 00:00:00