DE69210247D1 - Impedanz-tomographie - Google Patents

Impedanz-tomographie

Info

Publication number
DE69210247D1
DE69210247D1 DE69210247T DE69210247T DE69210247D1 DE 69210247 D1 DE69210247 D1 DE 69210247D1 DE 69210247 T DE69210247 T DE 69210247T DE 69210247 T DE69210247 T DE 69210247T DE 69210247 D1 DE69210247 D1 DE 69210247D1
Authority
DE
Germany
Prior art keywords
impedance tomography
tomography
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 - Fee Related
Application number
DE69210247T
Other languages
English (en)
Other versions
DE69210247T2 (de
Inventor
Mohsen Zadehkoochak
Barry Hugh Blott
Geoffrey John Daniell
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
Application filed by British Technology Group Ltd filed Critical British Technology Group Ltd
Application granted granted Critical
Publication of DE69210247D1 publication Critical patent/DE69210247D1/de
Publication of DE69210247T2 publication Critical patent/DE69210247T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Image Analysis (AREA)
DE69210247T 1991-07-26 1992-07-24 Impedanz-tomographie Expired - Fee Related DE69210247T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919116215A GB9116215D0 (en) 1991-07-26 1991-07-26 Electrical impedance tomography
PCT/GB1992/001371 WO1993002617A1 (en) 1991-07-26 1992-07-24 Electrical impedance tomography

Publications (2)

Publication Number Publication Date
DE69210247D1 true DE69210247D1 (de) 1996-05-30
DE69210247T2 DE69210247T2 (de) 1997-01-02

Family

ID=10699063

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69210247T Expired - Fee Related DE69210247T2 (de) 1991-07-26 1992-07-24 Impedanz-tomographie

Country Status (6)

Country Link
US (1) US5465730A (de)
EP (1) EP0599877B1 (de)
JP (1) JPH06509256A (de)
DE (1) DE69210247T2 (de)
GB (1) GB9116215D0 (de)
WO (1) WO1993002617A1 (de)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9200065D0 (en) * 1992-01-03 1992-02-26 Nycomed As Contrast media
US5651955A (en) * 1992-01-03 1997-07-29 Nycomed Imaging As Method of electrical impedance imaging using ionic metal chelates
GB9226376D0 (en) * 1992-12-18 1993-02-10 British Tech Group 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
US5919142A (en) * 1995-06-22 1999-07-06 Btg International Limited Electrical impedance tomography method and apparatus
US5732710A (en) * 1996-08-09 1998-03-31 R.S. Medical Monitoring Ltd. Method and device for stable impedance plethysmography
US5749369A (en) * 1996-08-09 1998-05-12 R.S. Medical Monitoring Ltd. Method and device for stable impedance plethysmography
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
US6122544A (en) * 1998-05-01 2000-09-19 Organ; Leslie William Electrical impedance method and apparatus for detecting and diagnosing diseases
US6411095B1 (en) 1998-05-05 2002-06-25 The Johns Hopkins University Apparatus and method for locating an object
AUPQ113799A0 (en) * 1999-06-22 1999-07-15 University Of Queensland, The A method and device for measuring lymphoedema
US7499745B2 (en) * 2000-02-28 2009-03-03 Barbara Ann Karmanos Cancer Institute Multidimensional bioelectrical tissue analyzer
ATE345086T1 (de) * 2000-06-09 2006-12-15 Boehm Stephan Dr Verfahren und vorrichtung zur darstellung von information die durch elektrische impedanz- tomografie erhalten ist
US6768921B2 (en) * 2000-12-28 2004-07-27 Z-Tech (Canada) Inc. Electrical impedance method and apparatus for detecting and diagnosing diseases
US6932909B2 (en) * 2002-01-15 2005-08-23 Kroff Chemical Company, Inc. Method of treating mine drainage
NO20020780D0 (no) * 2002-02-15 2002-02-15 Amersham Health As Bildeanalyse
US20080064981A1 (en) * 2002-11-07 2008-03-13 Christopher Gregory Method and apparatus for determining electrical properties of objects containing inhomogeneities
US7440796B2 (en) * 2003-01-10 2008-10-21 Kohwang Foundation, Kohwang Board Of Trustee System and method for three-dimensional visualization of conductivity and current density distribution in electrically conducting object
US8594764B2 (en) * 2003-03-07 2013-11-26 Jon Rice Device and method for assessing the electrical potential of cells and method for manufacture of same
US20080076998A1 (en) * 2003-12-01 2008-03-27 Z-Tech (Canada) Inc. Breast electrode array and method of analysis for detecting and diagnosing diseases
US7330032B2 (en) * 2003-12-30 2008-02-12 The Mitre Corporation Techniques for building-scale electrostatic tomography
WO2005122888A1 (en) 2004-06-18 2005-12-29 The University Of Queensland Oedema detection
EP1827222A1 (de) 2004-11-26 2007-09-05 Z-Tech (Canada) Inc. Gewichtetes gradientenverfahren und system zur diagnose von krankheiten
EP1898784B1 (de) 2005-07-01 2016-05-18 Impedimed Limited Verfahren und vorrichtung für impedanzmessungen
EP1898782B1 (de) 2005-07-01 2016-04-06 Impedimed Limited Überwachungssystem
US8099250B2 (en) 2005-08-02 2012-01-17 Impedimed Limited Impedance parameter values
US9724012B2 (en) 2005-10-11 2017-08-08 Impedimed Limited Hydration status monitoring
US8761870B2 (en) * 2006-05-30 2014-06-24 Impedimed Limited Impedance measurements
AU2007327573B2 (en) * 2006-11-30 2013-07-18 Impedimed Limited Measurement apparatus
JP5400618B2 (ja) 2007-01-15 2014-01-29 インぺディメッド リミテッド モニタリングシステム
WO2008119166A1 (en) 2007-03-30 2008-10-09 Z-Tech (Canada) Inc. Active guarding for reduction of resistive and capactive signal loading with adjustable control of compensation level
WO2008128281A1 (en) * 2007-04-20 2008-10-30 Impedimed Limited Monitoring system and probe
AU2008286194B2 (en) * 2007-08-09 2014-05-15 Impedimed Limited Impedance measurement process
US20090060332A1 (en) * 2007-08-27 2009-03-05 Riverain Medical Group, Llc Object segmentation using dynamic programming
US8836345B2 (en) 2007-11-05 2014-09-16 Impedimed Limited Impedance determination
AU2008207672B2 (en) 2008-02-15 2013-10-31 Impedimed Limited Impedance Analysis
US9615766B2 (en) 2008-11-28 2017-04-11 Impedimed Limited Impedance measurement process
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
US8963562B2 (en) 2011-08-31 2015-02-24 General Electric Company Transducer configurations and methods for transducer positioning in electrical impedance tomography
TWI442905B (zh) * 2011-09-30 2014-07-01 Univ Nat Chiao Tung 刺激目標範圍標定裝置
AU2012351988B2 (en) 2011-12-14 2017-05-04 Impedimed Limited Devices, systems and methods for determining the relative spatial change in subsurface resistivities across frequencies in tissue
US11266467B2 (en) 2016-10-25 2022-03-08 Navix International Limited Systems and methods for registration of intra-body electrical readings with a pre-acquired three dimensional image
US11311204B2 (en) * 2017-01-12 2022-04-26 Navix International Limited Systems and methods for reconstruction of intrabody electrical readings to anatomical structure
US11730395B2 (en) 2017-01-12 2023-08-22 Navix International Limited Reconstruction of an anatomical structure from intrabody measurements
US11471067B2 (en) 2017-01-12 2022-10-18 Navix International Limited Intrabody probe navigation by electrical self-sensing
CN107049315B (zh) * 2017-02-20 2020-02-11 中国科学院电工研究所 基于最优化迭代方法的注入电流式热声电阻率图像重建方法
CN111050641B (zh) 2017-08-17 2023-06-09 纳维斯国际有限公司 基于场梯度的远程成像
PL427697A1 (pl) 2018-11-08 2020-05-18 Uniwersytet W Białymstoku Sposób rekonstrukcji obrazu w elektrycznej tomografii impedancyjnej

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617939A (en) * 1982-04-30 1986-10-21 The University Of Sheffield Tomography
US5272624A (en) * 1990-10-02 1993-12-21 Rensselaer Polytechnic Institute Current patterns for impedance tomography

Also Published As

Publication number Publication date
DE69210247T2 (de) 1997-01-02
GB9116215D0 (en) 1991-09-11
WO1993002617A1 (en) 1993-02-18
JPH06509256A (ja) 1994-10-20
EP0599877B1 (de) 1996-04-24
EP0599877A1 (de) 1994-06-08
US5465730A (en) 1995-11-14

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Legal Events

Date Code Title Description
8332 No legal effect for de
8370 Indication of lapse of patent is to be deleted
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BTG INTERNATIONAL LTD., LONDON, GB

8339 Ceased/non-payment of the annual fee