ATE395866T1 - Elektrische impedanztomografie - Google Patents

Elektrische impedanztomografie

Info

Publication number
ATE395866T1
ATE395866T1 AT01272705T AT01272705T ATE395866T1 AT E395866 T1 ATE395866 T1 AT E395866T1 AT 01272705 T AT01272705 T AT 01272705T AT 01272705 T AT01272705 T AT 01272705T AT E395866 T1 ATE395866 T1 AT E395866T1
Authority
AT
Austria
Prior art keywords
ring
distribution
electrical contacts
representation
impedance
Prior art date
Application number
AT01272705T
Other languages
English (en)
Inventor
Mi Wang
Wuliang Yin
Original Assignee
Univ Leeds
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0031854A external-priority patent/GB0031854D0/en
Priority claimed from GB0120772A external-priority patent/GB0120772D0/en
Application filed by Univ Leeds filed Critical Univ Leeds
Application granted granted Critical
Publication of ATE395866T1 publication Critical patent/ATE395866T1/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/24—Investigating the presence of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0536—Impedance imaging, e.g. by tomography

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Materials For Medical Uses (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
AT01272705T 2000-12-30 2001-12-28 Elektrische impedanztomografie ATE395866T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0031854A GB0031854D0 (en) 2000-12-30 2000-12-30 Electrical impedance tomography for flow measurement
GB0120772A GB0120772D0 (en) 2001-08-25 2001-08-25 Electrical impedance tompgraphy for flow measurement

Publications (1)

Publication Number Publication Date
ATE395866T1 true ATE395866T1 (de) 2008-06-15

Family

ID=26245509

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01272705T ATE395866T1 (de) 2000-12-30 2001-12-28 Elektrische impedanztomografie

Country Status (6)

Country Link
US (1) US6940286B2 (de)
EP (1) EP1347706B1 (de)
AT (1) ATE395866T1 (de)
CA (1) CA2472220A1 (de)
DE (1) DE60134173D1 (de)
WO (1) WO2002053029A1 (de)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10238824A1 (de) * 2002-08-23 2004-03-11 Forschungszentrum Jülich GmbH Verfahren und Vorrichtung zur schnellen tomographischen Messung der elektrischen Leitfähigkeitsverteilung in einer Probe
AU2003900857A0 (en) * 2003-02-26 2003-03-13 Commonwealth Scientific And Industrial Research Organisation Method and apparatus for characterising multiphase fluid mixtures
WO2004091390A2 (en) 2003-04-15 2004-10-28 Philips Intellectual Property & Standards Gmbh Device and method for examination and use of an electrical field in an object under examination containing magnetic particles
US20050243087A1 (en) * 2004-04-30 2005-11-03 Shmuel Aharon GPU-based Finite Element
US7701227B2 (en) * 2005-01-05 2010-04-20 Rensselaer Polytechnic Institute High precision voltage source for electrical impedance tomography
WO2006082563A1 (en) * 2005-02-03 2006-08-10 Koninklijke Philips Electronics N.V. Radial adaptive filter for metal artifact correction
AU2006265763B2 (en) 2005-07-01 2012-08-09 Impedimed Limited Monitoring system
AU2006265761B2 (en) 2005-07-01 2011-08-11 Impedimed Limited Monitoring system
US20100292603A1 (en) * 2005-09-21 2010-11-18 Beth Israel Deaconess Medical Center, Inc. Electrical Impedance Myography
ES2476999T3 (es) 2005-10-11 2014-07-15 Impedimed Limited Monitorización del estado de hidratación
CN100362341C (zh) * 2005-12-22 2008-01-16 天津大学 Ert/ect双模态成像系统复合阵列传感器
WO2007088517A2 (en) 2006-02-01 2007-08-09 Ecole Polytechnique Federale De Lausanne (Epfl) Apparatus for manipulating, modifying and characterizing particles in a micro channel
CN100401044C (zh) * 2006-03-21 2008-07-09 天津大学 双模电成像系统传感器及基于该传感器的图像重建方法
NO324812B1 (no) * 2006-05-05 2007-12-10 Multi Phase Meters As Fremgangsmåte og innretning for tomografiske multifasestrømningsmålinger
CN100549684C (zh) * 2007-04-18 2009-10-14 天津大学 基于方形双模自标定传感器的图像重建方法
JP5419861B2 (ja) 2007-04-20 2014-02-19 インぺディメッド リミテッド インピーダンス測定装置および方法
WO2009018620A1 (en) 2007-08-09 2009-02-12 Impedimed Limited Impedance measurement process
US8102182B2 (en) 2007-10-11 2012-01-24 University Of Utah Research Foundation Systems and methods for measuring the electrical properties of a microparticle
US8386010B2 (en) * 2008-10-23 2013-02-26 Covidien Lp Surgical tissue monitoring system
SE533704C2 (sv) 2008-12-05 2010-12-07 Flatfrog Lab Ab Pekkänslig apparat och förfarande för drivning av densamma
FI123318B (fi) * 2009-09-29 2013-02-28 Outotec Oyj Massavirtauksen kolmiulotteinen kuvantaminen
JP5643829B2 (ja) 2009-10-26 2014-12-17 インぺディメッド リミテッドＩｍｐｅｄｉｍｅｄ Ｌｉｍｉｔｅｄ インピーダンス測定の分析において用いるための方法及び装置
AU2010321683B2 (en) 2009-11-18 2014-06-26 Impedimed Limited Signal distribution for patient-electrode measurements
US8121804B2 (en) * 2010-01-05 2012-02-21 General Electric Company Electrical network analysis of a multiphase system
US8536883B2 (en) 2010-04-29 2013-09-17 Schlumberger Technology Corporation Method of measuring a multiphase flow
TW201203052A (en) * 2010-05-03 2012-01-16 Flatfrog Lab Ab Touch determination by tomographic reconstruction
US8054094B1 (en) * 2010-06-10 2011-11-08 General Electric Company Image reconstruction based constrained maximization
US8508238B2 (en) 2010-08-12 2013-08-13 General Electric Company System and method for performing electrical impedance tomography
FI123789B (fi) 2010-11-30 2013-10-31 Metso Automation Oy Suspension kiinteän aineen määrän mittaus
CN102274025B (zh) * 2011-05-30 2012-11-28 郑州大学 多电极电阻抗断层成像数据采集系统
US8892379B2 (en) 2011-06-30 2014-11-18 General Electric Company System and method for soft-field reconstruction
US9989453B2 (en) * 2011-08-23 2018-06-05 Cidra Corporate Services, Inc. Tomographic determination of scale build-up in pipes and other tanks, cells, vessels or containers
US8963562B2 (en) 2011-08-31 2015-02-24 General Electric Company Transducer configurations and methods for transducer positioning in electrical impedance tomography
JP2015500470A (ja) * 2011-11-30 2015-01-05 ゼネラル・エレクトリック・カンパニイ 多相流体の高位の電流測定技法
CA2858244A1 (en) 2011-12-14 2013-06-20 Intersection Medical, Inc. Devices, systems and methods for determining the relative spatial change in subsurface resistivities across frequencies in tissue
US10168835B2 (en) 2012-05-23 2019-01-01 Flatfrog Laboratories Ab Spatial resolution in touch displays
CN103018284B (zh) * 2012-12-14 2015-05-13 北京航空航天大学 一种基于二端子阻抗测量模式的四端子电阻抗层析成像方法
US10019113B2 (en) 2013-04-11 2018-07-10 Flatfrog Laboratories Ab Tomographic processing for touch detection
US9874978B2 (en) 2013-07-12 2018-01-23 Flatfrog Laboratories Ab Partial detect mode
CN103604993B (zh) * 2013-09-12 2017-01-04 陕西航天导航设备有限公司 导电装置动态接触电阻测试设备及测试方法
WO2015108479A1 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Light coupling in tir-based optical touch systems
WO2015108480A1 (en) 2014-01-16 2015-07-23 Flatfrog Laboratories Ab Improvements in tir-based optical touch systems of projection-type
JP6423183B2 (ja) * 2014-06-25 2018-11-14 株式会社Ihi トモグラフィ計測方法
US10161886B2 (en) 2014-06-27 2018-12-25 Flatfrog Laboratories Ab Detection of surface contamination
GB201416287D0 (en) 2014-09-15 2014-10-29 Univ Leeds Tomography apparatus, multi-phase flow monitoring system and corresponding methods
GB201416280D0 (en) * 2014-09-15 2014-10-29 Univ Leeds Tomography apparatus and method
CN107209608A (zh) 2015-01-28 2017-09-26 平蛙实验室股份公司 动态触摸隔离帧
US10318074B2 (en) 2015-01-30 2019-06-11 Flatfrog Laboratories Ab Touch-sensing OLED display with tilted emitters
WO2016130074A1 (en) 2015-02-09 2016-08-18 Flatfrog Laboratories Ab Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel
US10401546B2 (en) 2015-03-02 2019-09-03 Flatfrog Laboratories Ab Optical component for light coupling
EP4075246B1 (de) 2015-12-09 2024-07-03 FlatFrog Laboratories AB Stift für optisches berührungssystem
WO2017105432A1 (en) * 2015-12-16 2017-06-22 Halliburton Energy Services, Inc. Electrical impedance tomography using a switchable array
CN105675658A (zh) * 2016-01-13 2016-06-15 天津大学 具有内置导体环的电阻层析成像传感器
GB2546522B (en) * 2016-01-21 2020-02-12 Atout Process Ltd Method and apparatus for measuring flows
CN105954351B (zh) * 2016-04-11 2019-03-26 中国石油大学(华东) 基于电磁-声耦合的油水两相流过程层析成像方法
DE102016114611A1 (de) 2016-08-07 2018-02-08 Karl-Heinz Fromm Elektrodenanordnung, insbesondere für die Elektrische Impedanz Tomographie
DE102016223029A1 (de) 2016-11-22 2018-05-24 Leibniz-Institut Für Festkörper-Und Werkstoffforschung Dresden E.V. Dreidimensionaler tomograf
US10761657B2 (en) 2016-11-24 2020-09-01 Flatfrog Laboratories Ab Automatic optimisation of touch signal
KR102629629B1 (ko) 2016-12-07 2024-01-29 플라트프로그 라보라토리즈 에이비 개선된 터치 장치
WO2018141948A1 (en) 2017-02-06 2018-08-09 Flatfrog Laboratories Ab Optical coupling in touch-sensing systems
US20180275830A1 (en) 2017-03-22 2018-09-27 Flatfrog Laboratories Ab Object characterisation for touch displays
CN110663015A (zh) 2017-03-28 2020-01-07 平蛙实验室股份公司 触摸感应装置和用于组装的方法
CN117311543A (zh) 2017-09-01 2023-12-29 平蛙实验室股份公司 触摸感测设备
US11567610B2 (en) 2018-03-05 2023-01-31 Flatfrog Laboratories Ab Detection line broadening
CN112889016A (zh) 2018-10-20 2021-06-01 平蛙实验室股份公司 用于触摸敏感装置的框架及其工具
KR102241035B1 (ko) * 2018-11-16 2021-04-16 경희대학교 산학협력단 다채널 배열전극 프로브를 이용한 스크리닝 장치 및 그 동작 방법
WO2020113157A1 (en) * 2018-11-28 2020-06-04 Northwestern University High resolution two-dimensional resistance tomography
WO2020153890A1 (en) 2019-01-25 2020-07-30 Flatfrog Laboratories Ab A videoconferencing terminal and method of operating the same
EP3698713B1 (de) 2019-02-20 2023-09-06 Löwenstein Medical Technology S.A. System zur erfassung von atemanstrengungen eines patienten
CN114730228A (zh) 2019-11-25 2022-07-08 平蛙实验室股份公司 一种触摸感应设备
DE102020100980A1 (de) 2020-01-16 2021-07-22 Endress+Hauser SE+Co. KG Verfahren zur Bestimmung und/oder Überwachung zumindest einer Eigenschaft eines Mediums
JP2023512682A (ja) 2020-02-10 2023-03-28 フラットフロッグ ラボラトリーズ アーベー 改良型タッチ検知装置
US11536676B2 (en) 2020-10-02 2022-12-27 Triad National Security, Llc Characterization of fluid inside pipe using multi frequency electrical signal
CN113724349A (zh) * 2021-07-30 2021-11-30 神华上航疏浚有限责任公司 水平管道流速计算方法、装置、计算机设备和存储介质
US11754520B2 (en) * 2021-08-26 2023-09-12 Beihang University Dynamic impedance imaging system
CN113945609B (zh) * 2021-10-13 2024-03-19 中国人民解放军国防科技大学 一种用于高铁接触线磨损检测的ert传感器
CN114062435A (zh) * 2021-10-21 2022-02-18 北京工业大学 基于电阻抗成像原理的具有灵敏度修正功能的柔性传感器
CN114216933B (zh) * 2021-12-16 2023-11-24 北京航空航天大学 一种适用于开域流场的气液两相流测量装置及方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813068A1 (de) 1978-03-25 1979-10-04 Philips Patentverwaltung Verfahren und vorrichtung zur ermittlung von inneren koerperstrukturen
IL62861A (en) * 1981-05-13 1988-01-31 Yeda Res & Dev Method and apparatus for carrying out electric tomography
GB2119520B (en) 1982-04-30 1985-05-15 Brian Hilton Brown Tomography
GB8415236D0 (en) 1984-06-14 1984-07-18 Univ Sheffield Tomography
US4617939A (en) * 1982-04-30 1986-10-21 The University Of Sheffield Tomography
US4920490A (en) * 1988-01-28 1990-04-24 Rensselaer Polytechnic Institute Process and apparatus for distinguishing conductivities by electric current computed tomography
US5272624A (en) * 1990-10-02 1993-12-21 Rensselaer Polytechnic Institute Current patterns for impedance tomography
JP3759606B2 (ja) 1994-03-11 2006-03-29 ビーティージー・インターナショナル・リミテッド 電気インピーダンス・トモグラフィ
CA2191285A1 (en) * 1996-11-26 1998-05-26 Philip Maurice Church Electrode arrangement for electrical impedance tomography system

Also Published As

Publication number Publication date
EP1347706A1 (de) 2003-10-01
DE60134173D1 (de) 2008-07-03
US6940286B2 (en) 2005-09-06
WO2002053029A1 (en) 2002-07-11
US20040130338A1 (en) 2004-07-08
EP1347706B1 (de) 2008-05-21
CA2472220A1 (en) 2002-07-11

Similar Documents

Publication Publication Date Title
DE60134173D1 (de) Elektrische impedanztomografie
KR920016351A (ko) 용량성 효과를 이용한 이온화 유체의 처리 방법 및 장치
BR9915977A (pt) Método de ruìdo eletroquìmico e sistema de medição para determinar a taxa de corrosão de um artigo eletricamente condutor
NO20064155L (no) System for maling av resistivitet i undergrunnsformasjoner
SE7812092L (sv) Anordning for att destruera ett biologiskt vevnadsparti
JP2012508611A5 (de)
ATE519119T1 (de) Elektrisches rückkopplungs-detektionssystem für mehrpunktsonden
ATE242884T1 (de) Elektrische prüfung der verbindung von leitern auf einem substrat
ES2103197B1 (es) Pasta conductora, electrodos y sensores electroquimicos que comprenden dicha pasta conductora, y su metodo de preparacion.
WO2006078715A3 (en) Pulsed magnetic stimulation device and method
MXPA01012467A (es) Aparato medidor de corriente para bateria.
CN101180547A (zh) 离子控制传感器
ATE21455T1 (de) Elektrische messsonde und verfahren zum herstellen der sonde.
LU90347B1 (de) Messverfahren fuer kapazitives Messsystem
DE60029211D1 (de) Wechselstrom corona-aufladungsvorrichtung
US3686566A (en) Method of operating a coulometric device
SE9804080L (sv) Elektrisk mätkomponent och användning av densamma
ES2106067T3 (es) Procedimiento y aparato para la verificacion del estado de aislamiento electrico de una construccion electricamente conductora.
GB2379273A (en) An electrode suitable for performing measurements in aggressive media
JP2003270196A (ja) 照合電極と電位測定装置
JPS6127570A (ja) 放電装置
ES2172433A1 (es) Equipo multifrecuencia detector del estado de los electrodos en los hornos de arco electrico.
SU1831097A1 (ru) Способ определения параметров ракетных двигателей малой тяги
Rahim et al. Initial result on electrical impedance tomography
GB2300927A (en) Electrical impedance tomography

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties