Multi-frequency parameter mapping of electrical impedance scanning using two kinds of circuit model.


:Electrical impedance scanning (EIS) is a kind of potential bio-impedance measurement technology, especially aiding the diagnosis of breast cancer in women. By changing the frequency of the driving signal in turn while keeping the other conditions stable, multi-frequency measurement results on the object can be obtained. According to the least square method and circuit theory, the parameters in two models are deduced when measured with data at multiple driving frequencies. The arcs, in the real and imaginary parts of a trans-admittance coordinate, made by the evaluated parameters fit well the realistic data measured by our EIS device on female subjects. The Cole-Cole model in the form of admittance is closer to the measured data than the three-element model. Based on the evaluation of the multi-frequency parameters, we presented parameter mapping of EIS using two kinds of circuit model: one is the three-element model in the form of admittance and the other is the Cole-Cole model in the form of admittance. Comparing with classical admittance mapping at a single frequency, the multi-frequency parameter mapping will provide a novel vision to study EIS. The multi-frequency approach can provide the mappings of four parameters, which is helpful to identify different diseases with a similar characteristic in classical EIS mapping. From plots of the real and imaginary parts of the admittance, it is easy to make sure whether there exists abnormal tissue.


Physiol Meas


Liu R,Dong X,Fu F,You F,Shi X,Ji Z,Wang K




Has Abstract


2007-07-01 00:00:00














  • Evaluation of an algorithm based on single-condition decision rules for binary classification of 12-lead ambulatory ECG recording quality.

    abstract::A new algorithm for classifying ECG recording quality based on the detection of commonly observed ECG contaminants which often render the ECG unusable for diagnostic purposes was evaluated. Contaminants (baseline drift, flat line, QRS-artefact, spurious spikes, amplitude stepwise changes, noise) were detected on indiv...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Di Marco LY,Duan W,Bojarnejad M,Zheng D,King S,Murray A,Langley P

    更新日期:2012-09-01 00:00:00

  • A practical approach to storage and retrieval of high-frequency physiological signals.

    abstract:OBJECTIVE:Storage of physiological waveform data for retrospective analysis presents significant challenges. Resultant data can be very large, and therefore becomes expensive to store and complicated to manage. Traditional database approaches are not appropriate for large scale storage of physiological waveforms. Our g...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Goodwin AJ,Eytan D,Greer RW,Mazwi M,Thommandram A,Goodfellow SD,Assadi A,Jegatheeswaran A,Laussen PC

    更新日期:2020-04-20 00:00:00

  • Assessing the validity and reliability and determining cut-points of the Actiwatch 2 in measuring physical activity.

    abstract:OBJECTIVE:The Actiwatch 2 (AW2) is a wrist-worn accelerometer typically used to measure sleep. Although it can measure physical activity, there is limited evidence supporting its validity. We assessed the validity and reliability of the AW2 to measure sedentary behavior and physical activity (light, moderate, vigorous ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Kemp C,Pienaar PR,Henst RHP,Roden LC,Kolbe-Alexander TL,Rae DE

    更新日期:2020-09-04 00:00:00

  • A comparative study of several exciting magnetic fields for induced current EIT.

    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

    pub_type: 杂志文章


    authors: Gençer NG,Ider YZ

    更新日期:1994-05-01 00:00:00

  • Measuring the rate of change of haemodynamic response at the onset of exercise in normal limbs and those with intermittent claudication.

    abstract::Patients with claudication have an inadequate haemodynamic response to exercise. Blood flow response will not only have a magnitude, but also a rate of change. There is scope for investigating these parameters, as manipulation of the factors which control them may benefit work to improve the treatment for claudication...

    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Meeson S,Srodon PD

    更新日期:2005-12-01 00:00:00

  • Network proteomics of human dermal wound healing.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Gao X,Petricoin EF 3rd,Ward KR,Goldberg SR,Duane TM,Bonchev D,Arodz T,Diegelmann RF

    更新日期:2018-12-07 00:00:00

  • Length and activation dependent variations in muscle shear wave speed.

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    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Chernak LA,DeWall RJ,Lee KS,Thelen DG

    更新日期:2013-06-01 00:00:00

  • An automated quasi-continuous capillary refill timing device.

    abstract::Capillary refill time (CRT) is a simple means of cardiovascular assessment which is widely used in clinical care. Currently, CRT is measured through manual assessment of the time taken for skin tone to return to normal colour following blanching of the skin surface. There is evidence to suggest that manually assessed ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Blaxter LL,Morris DE,Crowe JA,Henry C,Hill S,Sharkey D,Vyas H,Hayes-Gill BR

    更新日期:2016-01-01 00:00:00

  • Validation of x-ray fluorescence measurements of metals in toenail clippings against inductively coupled plasma mass spectrometry in a Nigerian population.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Specht AJ,Kponee K,Nkpaa KW,Balcom PH,Weuve J,Nie LH,Weisskopf MG

    更新日期:2018-08-31 00:00:00

  • Ischemic small intestine-in vivo versus ex vivo bioimpedance measurements.

    abstract:OBJECTIVE:Bioimpedance has been used to investigate changes in electrical parameters during ischemia in various tissues. The small intestine is a multi-layered structure, with several distinct tissue types, and ischemia related changes occur at different times in the different intestinal layers. When investigating how ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Strand-Amundsen RJ,Reims HM,Tronstad C,Kalvøy H,Martinsen ØG,Høgetveit JO,Ruud TE,Tønnessen TI

    更新日期:2017-05-01 00:00:00

  • Effects of awareness and nociception on heart rate variability during general anaesthesia.

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    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


    authors: Huhle R,Burghardt M,Zaunseder S,Wessel N,Koch T,Malberg H,Heller AR

    更新日期:2012-02-01 00:00:00

  • EIT data noise evaluation in the clinical environment.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Meeson S,Blott BH,Killingback AL

    更新日期:1996-11-01 00:00:00

  • The influence of dilution on the offline measurement of exhaled nitric oxide.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: MacBean V,Pooranampillai D,Howard C,Lunt A,Greenough A

    更新日期:2018-02-26 00:00:00

  • A support vector machine approach for AF classification from a short single-lead ECG recording.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


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    更新日期:2018-06-25 00:00:00

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    journal_title:Physiological measurement

    pub_type: 临床试验,杂志文章


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    更新日期:2011-10-01 00:00:00

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    journal_title:Physiological measurement

    pub_type: 杂志文章


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    更新日期:2020-06-30 00:00:00

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    journal_title:Physiological measurement

    pub_type: 杂志文章


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    更新日期:2015-06-01 00:00:00

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    authors: Keim-Malpass J,Enfield KB,Calland JF,Lake DE,Clark MT

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    pub_type: 杂志文章


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    abstract::Monitoring the fetal behavior does not only have implications for acute care but also for identifying developmental disturbances that burden the entire later life. The concept, of 'fetal programming', also known as 'developmental origins of adult disease hypothesis', e.g. applies for cardiovascular, metabolic, hyperki...

    journal_title:Physiological measurement

    pub_type: 杂志文章,评审


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    journal_title:Physiological measurement

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    authors: Fukuda DH,Hetrick RP,Kendall KL,Smith-Ryan AE,Jackson ME,Stout JR

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    journal_title:Physiological measurement

    pub_type: 杂志文章


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

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  • Digital auscultation of the uterine artery: a measure of uteroplacental perfusion.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    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

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    abstract::The non-invasive measurement of free field snoring sounds to estimate the site of snoring is an important development in the diagnosis, treatment and management of sleep-related breathing disorders. We investigated characteristics of the probability density function by testing the sensitivity of the statistical moment...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Beeton RJ,Wells I,Ebden P,Whittet HB,Clarke J

    更新日期:2007-10-01 00:00:00

  • Design considerations and performance of a prototype system for imaging neuronal depolarization in the brain using 'direct current' electrical resistance tomography.

    abstract::The ability to image the impedance changes that accompany neuronal depolarization in the brain would constitute a major advance in neuroscience technology. Unfortunately, these changes are likely to be small and rapid and so difficult to measure. The impedance change at frequencies above 10 kHz, as used by conventiona...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Boone KG,Holder DS

    更新日期:1995-08-01 00:00:00

  • Tracking time-varying cerebral autoregulation in response to changes in respiratory PaCO2.

    abstract::Cerebral autoregulation has been studied by linear filter systems, with arterial blood pressure (ABP) as the input and cerebral blood flow velocity (CBFV-from transcranial Doppler Ultrasound) as the output. The current work extends this by using adaptive filters to investigate the dynamics of time-varying cerebral aut...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Liu J,Simpson MD,Yan J,Allen R

    更新日期:2010-10-01 00:00:00

  • Linear and nonlinear characteristics of heart rate time series in obesity and during weight-reduction surgery.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Alam I,Lewis MJ,Morgan J,Baxter J

    更新日期:2009-07-01 00:00:00

  • Topographic distribution of idiopathic pulmonary fibrosis: a hybrid physics- and agent-based model.

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Wellman TJ,Mondoñedo JR,Davis GS,Bates JHT,Suki B

    更新日期:2018-06-28 00:00:00

  • Carotid flow rates and flow division at the bifurcation in healthy volunteers.

    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

    pub_type: 临床试验,杂志文章


    authors: Marshall I,Papathanasopoulou P,Wartolowska K

    更新日期:2004-06-01 00:00:00

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    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Krasteva V,Jekova I,Leber R,Schmid R,Abächerli R

    更新日期:2016-08-01 00:00:00