DE69505799T2 - Elektrische impedanz-tomographie - Google Patents

Elektrische impedanz-tomographie

Info

Publication number
DE69505799T2
DE69505799T2 DE69505799T DE69505799T DE69505799T2 DE 69505799 T2 DE69505799 T2 DE 69505799T2 DE 69505799 T DE69505799 T DE 69505799T DE 69505799 T DE69505799 T DE 69505799T DE 69505799 T2 DE69505799 T2 DE 69505799T2
Authority
DE
Germany
Prior art keywords
electrical impedance
impedance tomography
tomography
electrical
impedance
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69505799T
Other languages
English (en)
Other versions
DE69505799D1 (de
Inventor
Mi Wang
Fraser John Dickin
Richard Andrew Williams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BTG International Ltd
Original Assignee
British Technology Group Ltd
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 GB9404766A external-priority patent/GB9404766D0/en
Priority claimed from GB9405794A external-priority patent/GB9405794D0/en
Priority claimed from GB9424129A external-priority patent/GB9424129D0/en
Application filed by British Technology Group Ltd filed Critical British Technology Group Ltd
Application granted granted Critical
Publication of DE69505799D1 publication Critical patent/DE69505799D1/de
Publication of DE69505799T2 publication Critical patent/DE69505799T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0536Impedance imaging, e.g. by tomography
DE69505799T 1994-03-11 1995-03-10 Elektrische impedanz-tomographie Expired - Lifetime DE69505799T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9404766A GB9404766D0 (en) 1994-03-11 1994-03-11 Electrical resistance tomography
GB9405794A GB9405794D0 (en) 1994-03-23 1994-03-23 Electrical impedance tomography
GB9424129A GB9424129D0 (en) 1994-03-11 1994-11-25 Electrical impedance tomography
PCT/GB1995/000520 WO1995024155A1 (en) 1994-03-11 1995-03-10 Electrical impedance tomography

Publications (2)

Publication Number Publication Date
DE69505799D1 DE69505799D1 (de) 1998-12-10
DE69505799T2 true DE69505799T2 (de) 1999-04-22

Family

ID=27267094

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69505799T Expired - Lifetime DE69505799T2 (de) 1994-03-11 1995-03-10 Elektrische impedanz-tomographie

Country Status (6)

Country Link
US (1) US5807251A (de)
EP (1) EP0749285B1 (de)
JP (1) JP3759606B2 (de)
AU (1) AU699170B2 (de)
DE (1) DE69505799T2 (de)
WO (1) WO1995024155A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011018505A1 (de) * 2011-04-23 2012-10-25 Dräger Medical GmbH Vorrichtung und Verfahren zur Elektroimpedanztomographie
DE102011108252A1 (de) * 2011-07-22 2013-01-24 Rheinisch-Westfälische Technische Hochschule Aachen Verfahren und Vorrichtung zur Überwachung des Harnblasenfüllstandes eines Patienten

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0647224B2 (ja) * 1987-08-11 1994-06-22 アミテック株式会社 矩形枠体用研削装置
GB9522060D0 (en) * 1995-10-27 1996-01-03 Williams Richard A Characterisation of flowing dispersions
CA2191285A1 (en) 1996-11-26 1998-05-26 Philip Maurice Church Electrode arrangement for electrical impedance tomography system
JP3125730B2 (ja) * 1997-09-11 2001-01-22 憲一 山越 血行動態表示装置
CA2217603C (en) * 1997-10-02 2003-12-23 Alvin Wexler Reconstruction system and methods for impedance imaging
US6745070B2 (en) 1997-10-03 2004-06-01 Tasc Ltd. High definition electrical impedance tomography
WO1999052588A1 (en) * 1998-04-14 1999-10-21 Koninklijke Philips Electronics N.V. Electro-stimulation apparatus
US6122544A (en) * 1998-05-01 2000-09-19 Organ; Leslie William Electrical impedance method and apparatus for detecting and diagnosing diseases
AUPQ113799A0 (en) * 1999-06-22 1999-07-15 University Of Queensland, The A method and device for measuring lymphoedema
US6594521B2 (en) 1999-12-17 2003-07-15 Electrical Geodesics, Inc. Method for localizing electrical activity in the body
US7499745B2 (en) * 2000-02-28 2009-03-03 Barbara Ann Karmanos Cancer Institute Multidimensional bioelectrical tissue analyzer
US6768921B2 (en) * 2000-12-28 2004-07-27 Z-Tech (Canada) Inc. Electrical impedance method and apparatus for detecting and diagnosing diseases
CA2472220A1 (en) 2000-12-30 2002-07-11 University Of Leeds Electrical impedance tomography
US6529759B1 (en) 2001-03-08 2003-03-04 Electrical Geodesics, Inc. Method for mapping internal body tissue
US7840250B2 (en) 2001-11-13 2010-11-23 Electrical Geodesics, Inc. Method for neural current imaging
US20080064981A1 (en) * 2002-11-07 2008-03-13 Christopher Gregory Method and apparatus for determining electrical properties of objects containing inhomogeneities
DE10315863B4 (de) * 2003-04-08 2013-03-14 Dräger Medical GmbH Elektrodengürtel
US20040236202A1 (en) * 2003-05-22 2004-11-25 Burton Steven Angell Expandable strap for use in electrical impedance tomography
US20050107833A1 (en) 2003-11-13 2005-05-19 Freeman Gary A. Multi-path transthoracic defibrillation and cardioversion
US20080076998A1 (en) * 2003-12-01 2008-03-27 Z-Tech (Canada) Inc. Breast electrode array and method of analysis for detecting and diagnosing diseases
WO2005065090A2 (en) * 2003-12-30 2005-07-21 The Mitre Corporation Techniques for building-scale electrostatic tomography
KR100598146B1 (ko) * 2004-04-28 2006-07-07 메디게이트(주) 체임피던스 측정용 벨트 전극 장치
CA2578106C (en) 2004-06-18 2015-09-01 The University Of Queensland Oedema detection
WO2006056074A1 (en) 2004-11-26 2006-06-01 Z-Tech (Canada) Inc. Weighted gradient method and system for diagnosing disease
CA2608962C (en) 2005-07-01 2016-12-06 Scott Chetham Monitoring system
EP1898784B1 (de) 2005-07-01 2016-05-18 Impedimed Limited Verfahren und vorrichtung für impedanzmessungen
JP5161772B2 (ja) 2005-08-02 2013-03-13 インぺディメッド リミテッド インピーダンスパラメータ値
GB0516158D0 (en) * 2005-08-05 2005-09-14 Univ Montfort An apparatus and method for `non-contact' electrical impedance imaging
WO2007035887A2 (en) * 2005-09-21 2007-03-29 Beth Israel Deaconess Medical Center, Inc. Electrical impedance myography
CA2625631C (en) 2005-10-11 2016-11-29 Impedance Cardiology Systems, Inc. Hydration status monitoring
EP1813345A1 (de) * 2006-01-30 2007-08-01 Sulzer Pumpen Ag Verfahren und Vorrichtung zum steuern der Effiziens des Mischens
ES2545730T3 (es) * 2006-05-30 2015-09-15 Impedimed Limited Mediciones de impedancia
JP5372768B2 (ja) 2006-11-30 2013-12-18 インぺディメッド リミテッド 測定装置
ES2543967T3 (es) 2007-01-15 2015-08-26 Impedimed Limited Método para efectuar mediciones de impedancia en un sujeto
JP5101685B2 (ja) 2007-03-30 2012-12-19 インぺディメッド リミテッド 補償レベルを可変制御して抵抗性信号および容量性信号の負荷を低減するための動作保護回路
US10307074B2 (en) * 2007-04-20 2019-06-04 Impedimed Limited Monitoring system and probe
WO2009018620A1 (en) * 2007-08-09 2009-02-12 Impedimed Limited Impedance measurement process
CA2704061C (en) 2007-11-05 2017-06-20 Impedimed Limited Impedance determination
AU2008207672B2 (en) 2008-02-15 2013-10-31 Impedimed Limited Impedance Analysis
WO2010060152A1 (en) 2008-11-28 2010-06-03 Impedimed Limited Impedance measurement process
US8948838B2 (en) 2009-01-27 2015-02-03 Scibase Ab Switch probe for multiple electrode measurement of impedance
US9615767B2 (en) 2009-10-26 2017-04-11 Impedimed Limited Fluid level indicator determination
EP2501283B1 (de) 2009-11-18 2016-09-21 Impedimed Limited Signalverteilung für patientenelektrodenmessungen
US8264246B2 (en) * 2010-01-05 2012-09-11 General Electric Company Electrical network representation of a distributed system
US8054094B1 (en) * 2010-06-10 2011-11-08 General Electric Company Image reconstruction based constrained maximization
JP5656219B2 (ja) * 2010-12-16 2015-01-21 一般財団法人電力中央研究所 インピーダンス計測センサおよびインピーダンス計測装置
JP5704326B2 (ja) * 2011-03-28 2015-04-22 株式会社Ihi トモグラフィ装置及びトモグラフィ計測方法
US8983578B2 (en) 2012-02-27 2015-03-17 General Electric Company System and method for transducer placement in soft-field tomography
US20150342497A1 (en) 2013-01-09 2015-12-03 Timpel S.A. Method and apparatus for acquiring of signals for electrical impedance
RU2635343C2 (ru) * 2013-02-01 2017-11-16 Россоле Лтд Способ, устройство и компьютерная программа для определения местоположения поверхности раздела
WO2014135741A1 (en) 2013-03-07 2014-09-12 Rocsole Ltd Method and apparatus for investigating permittivity in a target domain
JP2014202722A (ja) * 2013-04-10 2014-10-27 株式会社豊田中央研究所 混相状態分布計測装置
JP6423183B2 (ja) * 2014-06-25 2018-11-14 株式会社Ihi トモグラフィ計測方法
DE102014009439B4 (de) 2014-06-25 2018-05-30 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Verarbeitung von tomografischen Daten
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
FR3029287B1 (fr) * 2014-11-28 2016-12-30 Commissariat Energie Atomique Methode d'imagerie d'un milieu par mesures electriques avec correction d'impedance de contact
DE102014018107B4 (de) 2014-12-09 2022-03-10 Drägerwerk AG & Co. KGaA Vorrichtung zur Verarbeitung von tomografischen Daten zur Darstellung eines Therapieverlaufs
DE102014018490A1 (de) 2014-12-16 2015-11-05 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Entfernung impulsartiger Störsignale aus Misssignalen eines für eine Bildgebung der Lunge geeignetes Elektro-Impedanz-Tomographie-Gerätes
US10874324B2 (en) * 2015-10-20 2020-12-29 General Electric Company Detection of physiological changes in impedance monitoring
DE102016011161A1 (de) 2016-09-16 2018-03-22 Drägerwerk AG & Co. KGaA Vorrichtung zur Verarbeitung und Visualisierung von Daten eines Elektro-lmpedanz-Tomographie-Gerätes zu einer Ermittlung und Visualisierung von regionalen Eigenschaften der Ventilation der Lunge
DE102016014251B4 (de) 2016-11-30 2023-02-02 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Ermittlung einer axialen Position einer Elektrodenanordnung zur Elektro-Impedanz-Tomographie
DE102016014252B4 (de) 2016-11-30 2023-02-02 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Bestimmung einer Umfangsform einer Elektrodenanordnung zur Elektro-Impedanz-Tomographie
DE102017006107A1 (de) 2017-06-28 2019-01-03 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Verarbeitung und Visualisierung von mittels eines Elektro-lmpedanz-Tomographie-Gerätes (EIT) gewonnenen Daten hinsichtlich eines Durchblutungszustandes von Herz und Lunge
DE102017007224A1 (de) 2017-08-02 2019-02-07 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zu einer Bestimmung von Differenzkennzahlen auf Basis von EIT-Daten
US11412946B2 (en) 2017-11-14 2022-08-16 Timpel Medical B.V. Electrical impedance tomography device and system having a multi-dimensional electrode arrangement
US10542906B2 (en) 2018-04-25 2020-01-28 Spectrohm, Inc. Tomographic systems and methods for determining characteristics of inhomogenous specimens using guided electromagnetic fields
JP2020046182A (ja) * 2018-09-14 2020-03-26 日置電機株式会社 処理装置および処理方法
DE102018008545A1 (de) 2018-11-01 2020-05-07 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Elektro-lmpedanz-Tomographie (EIT) mit Ermittlung einer Herzregion
CN111024772B (zh) * 2019-12-03 2022-06-14 西安科技大学 激光熔覆熔池微电阻分布成像方法与装置
DE102021134348A1 (de) 2021-12-22 2023-06-22 Drägerwerk AG & Co. KGaA Verfahren und System mit einer Messvorrichtung und einer Analysevorrichtung zu einer Verarbeitung von Daten

Family Cites Families (21)

* 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
FR2486386A1 (fr) * 1980-07-09 1982-01-15 Argamakoff Alexis Detecteur combine thermographique et impedancemetrique pour la detection precoce de tumeurs
US4709704A (en) * 1984-03-06 1987-12-01 The Kendall Company Monitoring device for bio-signals
US4920490A (en) * 1988-01-28 1990-04-24 Rensselaer Polytechnic Institute Process and apparatus for distinguishing conductivities by electric current computed tomography
US5184624A (en) * 1988-04-15 1993-02-09 The University Of Sheffield Electrical impedance tomography
US4974598A (en) * 1988-04-22 1990-12-04 Heart Map, Inc. EKG system and method using statistical analysis of heartbeats and topographic mapping of body surface potentials
US5020541A (en) * 1988-07-13 1991-06-04 Physio-Control Corporation Apparatus for sensing lead and transthoracic impedances
GB9013177D0 (en) * 1990-06-13 1990-08-01 Brown Brian H Real-time imaging, etc.
US5272624A (en) * 1990-10-02 1993-12-21 Rensselaer Polytechnic Institute Current patterns for impedance tomography
SE466987B (sv) * 1990-10-18 1992-05-11 Stiftelsen Ct Foer Dentaltekni Anordning foer djupselektiv icke-invasiv, lokal maetning av elektrisk impedans i organiska och biologiska material samt prob foer maetning av elektrisk impedans
GB9113830D0 (en) * 1991-06-27 1991-08-14 Brown Brian H Applied potential tomography
US5544662A (en) * 1991-07-09 1996-08-13 Rensselaer Polytechnic Institute High-speed electric tomography
US5284142A (en) * 1991-12-16 1994-02-08 Rensselaer Polytechnic Institute Three-dimensional impedance imaging processes
US5390110A (en) * 1991-07-09 1995-02-14 Rensselaer Polytechnic Institute Layer stripping process for impedance imaging
US5381333A (en) * 1991-07-23 1995-01-10 Rensselaer Polytechnic Institute Current patterns for electrical impedance tomography
GB9116215D0 (en) * 1991-07-26 1991-09-11 Nat Res Dev Electrical impedance tomography
US5351697A (en) * 1991-12-16 1994-10-04 Rensseleaer Polytechnic Institute Three-dimensional impedance imaging process
GB9226376D0 (en) * 1992-12-18 1993-02-10 British Tech Group Tomography
DE4243628A1 (de) * 1992-12-22 1994-06-23 Siemens Ag Vorrichtung zur nichtinvasiven Bestimmung der räumlichen Verteilung der elektrischen Impedanz im Innern eines Lebewesens
US5560372A (en) * 1994-02-02 1996-10-01 Cory; Philip C. Non-invasive, peripheral nerve mapping device and method of use
US5657552A (en) * 1995-11-09 1997-08-19 Reineck; Rollin Device for measuring distances on globes or maps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011018505A1 (de) * 2011-04-23 2012-10-25 Dräger Medical GmbH Vorrichtung und Verfahren zur Elektroimpedanztomographie
US9042957B2 (en) 2011-04-23 2015-05-26 Dräger Medical GmbH Device and method for electroimpedance tomography
DE102011018505B4 (de) * 2011-04-23 2021-06-24 Drägerwerk AG & Co. KGaA Vorrichtung zur Elektroimpedanztomographie
DE102011108252A1 (de) * 2011-07-22 2013-01-24 Rheinisch-Westfälische Technische Hochschule Aachen Verfahren und Vorrichtung zur Überwachung des Harnblasenfüllstandes eines Patienten

Also Published As

Publication number Publication date
US5807251A (en) 1998-09-15
EP0749285B1 (de) 1998-11-04
JP3759606B2 (ja) 2006-03-29
EP0749285A1 (de) 1996-12-27
AU1857095A (en) 1995-09-25
JPH09510014A (ja) 1997-10-07
AU699170B2 (en) 1998-11-26
WO1995024155A1 (en) 1995-09-14
DE69505799D1 (de) 1998-12-10

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Legal Events

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