WO2004086940A3 - Device and method for performing electrical impedance tomography - Google Patents

Device and method for performing electrical impedance tomography Download PDF

Info

Publication number
WO2004086940A3
WO2004086940A3 PCT/US2004/009162 US2004009162W WO2004086940A3 WO 2004086940 A3 WO2004086940 A3 WO 2004086940A3 US 2004009162 W US2004009162 W US 2004009162W WO 2004086940 A3 WO2004086940 A3 WO 2004086940A3
Authority
WO
WIPO (PCT)
Prior art keywords
plane
planes
electrodes
electrical impedance
performing electrical
Prior art date
Application number
PCT/US2004/009162
Other languages
French (fr)
Other versions
WO2004086940A2 (en
Inventor
Fansan Zhu
Nathan W Levin
Original Assignee
Fresenius Med Care Hldg Inc
Fansan Zhu
Nathan W Levin
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 Fresenius Med Care Hldg Inc, Fansan Zhu, Nathan W Levin filed Critical Fresenius Med Care Hldg Inc
Priority to EP04758334.9A priority Critical patent/EP1613212B1/en
Publication of WO2004086940A2 publication Critical patent/WO2004086940A2/en
Publication of WO2004086940A3 publication Critical patent/WO2004086940A3/en

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)

Abstract

A system for performing electrical impedance tomography. The system includes a first set of electrodes positioned in a first plane and a second set of electrodes positioned in a second plane. The system also includes a third set of electrodes positioned in a third plane between the first and second planes. The third set of electrodes is rotatable around an axis intersecting the third plane. Furthermore, the third set of electrodes may be moveable in an axial direction between the first and second planes to various other planes, e.g., a fourth plane, a fifth plane, etc. The processor is further configured to process the voltage measurements taken by the voltage measurement device so as to generate a current density distribution in the various other planes. In addition, the processor is further configured to generate a three-dimensional image corresponding to the current density distribution between the first and second planes.
PCT/US2004/009162 2003-03-25 2004-03-25 Device and method for performing electrical impedance tomography WO2004086940A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04758334.9A EP1613212B1 (en) 2003-03-25 2004-03-25 Device and method for performing electrical impedance tomography

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45766703P 2003-03-25 2003-03-25
US60/457,667 2003-03-25

Publications (2)

Publication Number Publication Date
WO2004086940A2 WO2004086940A2 (en) 2004-10-14
WO2004086940A3 true WO2004086940A3 (en) 2005-11-03

Family

ID=33131705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/009162 WO2004086940A2 (en) 2003-03-25 2004-03-25 Device and method for performing electrical impedance tomography

Country Status (3)

Country Link
US (1) US7491174B2 (en)
EP (1) EP1613212B1 (en)
WO (1) WO2004086940A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100549684C (en) * 2007-04-18 2009-10-14 天津大学 Image rebuilding method based on Square double mode self-calibration sensor

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ113799A0 (en) 1999-06-22 1999-07-15 University Of Queensland, The A method and device for measuring lymphoedema
US7603158B2 (en) * 2003-09-04 2009-10-13 Adrian Nachman Current density impedance imaging (CDII)
US8068906B2 (en) 2004-06-21 2011-11-29 Aorora Technologies Pty Ltd Cardiac monitoring system
WO2005122881A1 (en) * 2004-06-21 2005-12-29 Aorora Technologies Pty Ltd Cardiac monitoring system
JP2008544777A (en) 2005-07-01 2008-12-11 インぺディメッド リミテッド Monitoring system
CA2613524C (en) 2005-07-01 2015-12-29 Impedance Cardiology Systems Inc. Pulmonary monitoring system
WO2007002991A1 (en) 2005-07-01 2007-01-11 Impedimed Limited Monitoring system
CA2625631C (en) 2005-10-11 2016-11-29 Impedance Cardiology Systems, Inc. Hydration status monitoring
JP4640608B2 (en) * 2005-12-12 2011-03-02 ソニー株式会社 Detection apparatus and detection method
KR100700112B1 (en) * 2006-02-03 2007-03-28 경희대학교 산학협력단 System and method for Electrical Impedance Tomography
CN100401044C (en) * 2006-03-21 2008-07-09 天津大学 Double mode electric imaging system sensor and image rebuilding method based on said sensor
US8761870B2 (en) 2006-05-30 2014-06-24 Impedimed Limited Impedance measurements
WO2008064426A1 (en) 2006-11-30 2008-06-05 Impedimed Limited Measurement apparatus
ES2473278T3 (en) 2007-04-20 2014-07-04 Impedimed Limited Probe and monitoring system
AU2008286194B2 (en) 2007-08-09 2014-05-15 Impedimed Limited Impedance measurement process
US8159235B2 (en) * 2007-09-14 2012-04-17 The Regents Of The University Of Michigan Electrical impedance tomography of nanoengineered thin films
AU2009321478B2 (en) 2008-11-28 2014-01-23 Impedimed Limited Impedance measurement process
US8948838B2 (en) * 2009-01-27 2015-02-03 Scibase Ab Switch probe for multiple electrode measurement of impedance
GB0910704D0 (en) * 2009-06-22 2009-08-05 Univ Leeds A novel tomographic sensing system for high conductivity multiphase flow measurement
US8452414B2 (en) * 2009-09-29 2013-05-28 Medtronic, Inc. Steering stimulation current by employing steering current
WO2011050393A1 (en) 2009-10-26 2011-05-05 Impedimed Limited Fluid level indicator determination
EP2501283B1 (en) 2009-11-18 2016-09-21 Impedimed Limited Signal distribution for patient-electrode measurements
KR102291972B1 (en) * 2011-01-19 2021-08-23 프랙틸 헬쓰, 인코포레이티드 Devices and methods for the treatment of tissue
US9149225B2 (en) 2011-12-14 2015-10-06 Intesection Medical, Inc. Methods for determining the relative spatial change in subsurface resistivities across frequencies in tissue
TWI461180B (en) * 2011-12-30 2014-11-21 Univ Nat Chiao Tung Method for improving imaging resolution of electrical impedance tomography
US9170224B2 (en) * 2012-10-31 2015-10-27 The University Of Connecticut Multiple-excitation multiple-receiving (MEMR) capacitance tomography
US9804112B2 (en) 2013-11-20 2017-10-31 Transtech Systems, Inc. Selective characterization of material under test (MUT) with electromagnetic impedance tomography and spectroscopy
WO2015179379A1 (en) * 2014-05-19 2015-11-26 Anthrotronix, Inc. Electrodermal interface system
GB201501891D0 (en) * 2015-02-05 2015-03-25 The Technology Partnership Plc Method for producing an electrical impedance tomographic image of an acoustic field and a system for performing said method
GB2545703B (en) 2015-12-22 2019-01-09 Univ Sheffield Apparatus and methods for determining force applied to the tip of a probe
GB2553261B (en) * 2016-05-31 2022-05-04 Wang Wei Electrical impedance measurement and EIT image for location of a micro bio-channel under skin
DE102016014251B4 (en) * 2016-11-30 2023-02-02 Drägerwerk AG & Co. KGaA Device and method for determining an axial position of an electrode arrangement for electro-impedance tomography
US10481192B1 (en) * 2016-12-19 2019-11-19 Bae Systems Controls Inc. Multiple-pin-injection for lightning test
DE102018008545A1 (en) * 2018-11-01 2020-05-07 Drägerwerk AG & Co. KGaA Device and method for electro-impedance tomography (EIT) with determination of a heart region

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501984B1 (en) * 1996-11-26 2002-12-31 Computing Devices Canada Ltd. Electrical impedance tomography method and electrode arrangement for use therein

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370983A (en) 1971-01-20 1983-02-01 Lichtenstein Eric Stefan Computer-control medical care system
JPS5441584A (en) 1977-09-07 1979-04-02 Asahi Medical Co Human body blood current meter
DE2813068A1 (en) * 1978-03-25 1979-10-04 Philips Patentverwaltung METHOD AND DEVICE FOR DETERMINING INTERNAL BODY STRUCTURES
CH642835A5 (en) 1980-02-18 1984-05-15 Asulab Ag BLOOD PRESSURE MEASURING DEVICE.
US4895163A (en) 1988-05-24 1990-01-23 Bio Analogics, Inc. System for body impedance data acquisition
GB9013177D0 (en) * 1990-06-13 1990-08-01 Brown Brian H Real-time imaging, etc.
US6246894B1 (en) 1993-02-01 2001-06-12 In-Line Diagnostics Corporation System and method for measuring blood urea nitrogen, blood osmolarity, plasma free hemoglobin and tissue water content
US5280429A (en) 1991-04-30 1994-01-18 Xitron Technologies Method and apparatus for displaying multi-frequency bio-impedance
DE4239937C2 (en) 1992-11-27 1995-08-24 Fresenius Ag Method for determining the functionality of a partial device of a hemodialysis machine and device for carrying out this method
JP3844779B2 (en) 1995-04-20 2006-11-15 マイクロコー インコーポレイテッド Method and apparatus for noninvasively measuring hematocrit
GB9524968D0 (en) * 1995-12-06 1996-02-07 Brown Brian H Impedance pneumography
RU2127075C1 (en) * 1996-12-11 1999-03-10 Корженевский Александр Владимирович Method for producing tomographic image of body and electrical-impedance tomographic scanner
FI972067A0 (en) 1997-05-14 1997-05-14 Tiit Koeoebi Apparaturer ocffaranden Foer utvaendig maetning av physiologiska parametar
WO1998052464A1 (en) * 1997-05-23 1998-11-26 The Carolinas Heart Institute Electromagnetical imaging and therapeutic (emit) systems
US6363275B1 (en) * 1997-07-25 2002-03-26 Werner Alois Kaiser Device for detecting, for characterizing by differential diagnosis, and treating tumors
CA2229528A1 (en) * 1998-02-13 1999-08-13 Shailesh Mehta Apparatus and method for analyzing particles
IL128803A0 (en) * 1998-03-24 2000-01-31 Siemens Ag Apparatus for examining living tissue
US6231572B1 (en) * 1998-05-29 2001-05-15 Applied Medical Resources Corporation Electrosurgical catheter apparatus and method
US6615077B1 (en) 2000-08-14 2003-09-02 Renal Research Institute, Llc Device and method for monitoring and controlling physiologic parameters of a dialysis patient using segmental bioimpedence
DE60000544T2 (en) 2000-11-06 2003-02-27 Fresenius Medical Care De Gmbh Method and device for determining the dry weight of a patient with renal failure
DE10142393C1 (en) * 2001-08-30 2003-01-23 Fraunhofer Ges Forschung Apparatus measuring bioelectrical signals from spheroids, includes commensurately-sized chamber ringed internally with coplanar electrodes
US7169107B2 (en) * 2002-01-25 2007-01-30 Karen Jersey-Willuhn Conductivity reconstruction based on inverse finite element measurements in a tissue monitoring system
US7599730B2 (en) * 2002-11-19 2009-10-06 Medtronic Navigation, Inc. Navigation system for cardiac therapies

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6501984B1 (en) * 1996-11-26 2002-12-31 Computing Devices Canada Ltd. Electrical impedance tomography method and electrode arrangement for use therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100549684C (en) * 2007-04-18 2009-10-14 天津大学 Image rebuilding method based on Square double mode self-calibration sensor

Also Published As

Publication number Publication date
US7491174B2 (en) 2009-02-17
EP1613212B1 (en) 2016-08-24
US20040242989A1 (en) 2004-12-02
WO2004086940A2 (en) 2004-10-14
EP1613212A4 (en) 2009-06-24
EP1613212A2 (en) 2006-01-11

Similar Documents

Publication Publication Date Title
WO2004086940A3 (en) Device and method for performing electrical impedance tomography
Katz Boundary element method calculation of individual head-related transfer function. I. Rigid model calculation
BR0210833A (en) System and method for bioelectrical impedance measurement in the presence of interference
WO2005036096A3 (en) Measuring vector components of an electric field
WO2012122517A3 (en) Device and method for the geometric determination of electrical dipole densities on the cardiac wall
Ontiveros et al. Dimensional measurement of micro-moulded parts by computed tomography
WO2008052223A3 (en) Apparatus and method for mapping a wired network
ITPI20040060A1 (en) METHOD AND APPARATUS FOR MONITORING OF PHYSIOLOGICAL VARIABLES THROUGH BODY ELECTRIC MEASUREMENT MEASUREMENTS
WO2008119992A3 (en) Method and apparatus for analysing the structure of bone tissue
WO2004083980A3 (en) Method of mitigating effects of component deflection in a probe card analyzer
TW357421B (en) Method and apparatus for testing electrical characteristics of an object to be tested
EP1302159A4 (en) Cardiac magnetic field diagnozer for atrial flutter and atrial fibrillation and method for identifying electric turning path of atrial flutter and atrial fibrillation
WO2003067696A3 (en) Methods of removing contaminants from a fuel cell electrode
WO2006080005A3 (en) Electronic device and a method of its fabrication
Bai et al. Experimental study on ion-flow fields inside greenhouse models underneath the DC test wire
CN106443549A (en) Analog alternating current resistance device for calibrating battery internal resistance tester
CN201909839U (en) Calibrating and testing device of current sensor
Wotzka Mathematical description of acoustic emission signals generated by partial discharges
CN115421004A (en) Handheld portable partial discharge inspection positioning device and partial discharge inspection method
WO2001069204A3 (en) Methods of investigating corrosion
CN203414560U (en) Device detecting polarity of shearing sheet
CN204256023U (en) A kind of New type of current pincers shell fragment gap control device
Suda et al. Small ion mobility characteristics under the Shiobara HVDC test line
Wang et al. The grouped node technique as a means of handling large electrode surfaces in electrical impedance tomography
CN114264892B (en) On-line charge distribution measuring device and method for high-voltage direct-current cable and accessories thereof

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REEP Request for entry into the european phase

Ref document number: 2004758334

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2004758334

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2004758334

Country of ref document: EP