GB2138148B - Method and apparatus for deriving currents and potentials representative of the impedance of zones of a body - Google Patents

Method and apparatus for deriving currents and potentials representative of the impedance of zones of a body

Info

Publication number
GB2138148B
GB2138148B GB08409657A GB8409657A GB2138148B GB 2138148 B GB2138148 B GB 2138148B GB 08409657 A GB08409657 A GB 08409657A GB 8409657 A GB8409657 A GB 8409657A GB 2138148 B GB2138148 B GB 2138148B
Authority
GB
United Kingdom
Prior art keywords
zones
impedance
potentials representative
deriving currents
deriving
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
Application number
GB08409657A
Other versions
GB2138148A (en
Inventor
Denis Nigel Smith
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.)
Individual
Original Assignee
Individual
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 GB838309927A external-priority patent/GB8309927D0/en
Application filed by Individual filed Critical Individual
Priority to GB08409657A priority Critical patent/GB2138148B/en
Publication of GB2138148A publication Critical patent/GB2138148A/en
Application granted granted Critical
Publication of GB2138148B publication Critical patent/GB2138148B/en
Expired 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
    • 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
    • A61B5/0535—Impedance plethysmography

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)
  • Hematology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
GB08409657A 1983-04-13 1984-04-13 Method and apparatus for deriving currents and potentials representative of the impedance of zones of a body Expired GB2138148B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08409657A GB2138148B (en) 1983-04-13 1984-04-13 Method and apparatus for deriving currents and potentials representative of the impedance of zones of a body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838309927A GB8309927D0 (en) 1983-04-13 1983-04-13 Determination of internal structure of bounded objects
GB08409657A GB2138148B (en) 1983-04-13 1984-04-13 Method and apparatus for deriving currents and potentials representative of the impedance of zones of a body

Publications (2)

Publication Number Publication Date
GB2138148A GB2138148A (en) 1984-10-17
GB2138148B true GB2138148B (en) 1986-07-30

Family

ID=26285805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08409657A Expired GB2138148B (en) 1983-04-13 1984-04-13 Method and apparatus for deriving currents and potentials representative of the impedance of zones of a body

Country Status (1)

Country Link
GB (1) GB2138148B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8415236D0 (en) * 1984-06-14 1984-07-18 Univ Sheffield Tomography
GB8808969D0 (en) * 1988-04-15 1988-05-18 Univ Sheffield Tomography
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
DE69535331D1 (en) * 1994-10-24 2007-01-18 Mirabel Medical Systems Ltd DEVICE AND MANY ELEMENTS TRANSFORMERS FOR IMAGING BY IMPEDANCE MEASUREMENT
US6560480B1 (en) * 1994-10-24 2003-05-06 Transscan Medical Ltd. Localization of anomalies in tissue and guidance of invasive tools based on impedance imaging
US6678552B2 (en) 1994-10-24 2004-01-13 Transscan Medical Ltd. Tissue characterization based on impedance images and on impedance measurements
US5810742A (en) 1994-10-24 1998-09-22 Transcan Research & Development Co., Ltd. Tissue characterization based on impedance images and on impedance measurements
CA2191285A1 (en) * 1996-11-26 1998-05-26 Philip Maurice Church Electrode arrangement for electrical impedance tomography system
IL143374A0 (en) 2001-05-24 2002-04-21 Transscan Medical Ltd Anomaly detection based on signal variations
US6788966B2 (en) 2001-10-22 2004-09-07 Transscan Medical Ltd. Diagnosis probe
AU2003219491A1 (en) 2002-04-04 2003-10-20 Transscan Medical Ltd. Impedance measurements on breast nipples
US7096061B2 (en) 2002-07-03 2006-08-22 Tel-Aviv University Future Technology Development L.P. Apparatus for monitoring CHF patients using bio-impedance technique
US7907998B2 (en) 2002-07-03 2011-03-15 Tel Aviv University Future Technology Development L.P. Bio-impedance apparatus and method
JP4740629B2 (en) * 2005-04-13 2011-08-03 株式会社タニタ Trunk visceral fat measuring method and apparatus
JP4740641B2 (en) * 2005-05-02 2011-08-03 株式会社タニタ Trunk subcutaneous fat measuring method and apparatus, trunk visceral / subcutaneous fat measuring method and apparatus
JP4740642B2 (en) * 2005-05-02 2011-08-03 株式会社タニタ Trunk visceral fat measuring method and apparatus, and trunk skeletal muscle mass measuring apparatus
JP4740638B2 (en) * 2005-04-27 2011-08-03 株式会社タニタ Trunk visceral fat measurement method and apparatus
US8914101B2 (en) * 2008-10-30 2014-12-16 Medtronic, Inc. System and method to localize changes in intrathoracic fluid content using measured impedance in an implantable device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB939757A (en) * 1959-10-09 1963-10-16 Koolajipari Troszt Improvements in well logging apparatus
US3608543A (en) * 1968-10-03 1971-09-28 Univ Carnegie Mellon Physiological impedance-measuring apparatus
GB1310141A (en) * 1969-04-07 1973-03-14 Schlumberger Inland Service Methods and apparatus for investigating earth formations
US3750649A (en) * 1971-06-25 1973-08-07 Univ California Pulmonary impedance bridge
GB2019004B (en) * 1978-01-21 1982-12-08 Schlumberger Ltd Well logging methods and apparatus

Also Published As

Publication number Publication date
GB2138148A (en) 1984-10-17

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930413