JP6276067B2 - 電気的インピーダンス測定装置 - Google Patents
電気的インピーダンス測定装置 Download PDFInfo
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- JP6276067B2 JP6276067B2 JP2014037524A JP2014037524A JP6276067B2 JP 6276067 B2 JP6276067 B2 JP 6276067B2 JP 2014037524 A JP2014037524 A JP 2014037524A JP 2014037524 A JP2014037524 A JP 2014037524A JP 6276067 B2 JP6276067 B2 JP 6276067B2
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- 238000009826 distribution Methods 0.000 claims description 59
- 230000005484 gravity Effects 0.000 claims description 36
- 238000010586 diagram Methods 0.000 claims description 21
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 210000004072 lung Anatomy 0.000 claims description 11
- 238000002847 impedance measurement Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 25
- 238000002593 electrical impedance tomography Methods 0.000 description 12
- 238000013459 approach Methods 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 206010001052 Acute respiratory distress syndrome Diseases 0.000 description 3
- 208000013616 Respiratory Distress Syndrome Diseases 0.000 description 3
- 201000000028 adult respiratory distress syndrome Diseases 0.000 description 3
- 230000003187 abdominal effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 206010038687 Respiratory distress Diseases 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
- A61B5/004—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0809—Detecting, measuring or recording devices for evaluating the respiratory organs by impedance pneumography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6823—Trunk, e.g., chest, back, abdomen, hip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
- A61B5/743—Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/7475—User input or interface means, e.g. keyboard, pointing device, joystick
- A61B5/748—Selection of a region of interest, e.g. using a graphics tablet
- A61B5/7485—Automatic selection of region of interest
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
- A61B2562/0214—Capacitive electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
- A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2576/00—Medical imaging apparatus involving image processing or analysis
- A61B2576/02—Medical imaging apparatus involving image processing or analysis specially adapted for a particular organ or body part
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
- A61B5/0037—Performing a preliminary scan, e.g. a prescan for identifying a region of interest
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Physiology (AREA)
- Pulmonology (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
21 電流印加部
22 測定部
23 電極選択部
24 制御部
30 コンピュータ部
31 制御装置
32 入力部
33 表示部
34 インピーダンス取得手段
35 ヒストグラム生成手段
36 作成手段
37 表示制御手段
38 重心算出手段
39 曲線生成手段
111-11n 電極
Claims (10)
- 生体の胸部周囲に貼着された複数の電極と、
前記電極のいずれかに電流を印加すると共に他の電極によって電位を測定する処理を、電流を印加する電極を変更しながら全電極について行う電位測定手段と、
前記印加された電流と前記電位測定手段により得られた電位に基づき、胸部断面領域をメッシュ化した各メッシュのインピーダンスを求めるインピーダンス取得手段と、
前記胸部断面領域に腹側から背側までを含む1以上の区分領域を設定してこの区分領域におけるインピーダンス分布のヒストグラムを求めるヒストグラム生成手段と、
前記ヒストグラムの振幅を対応する色により置き換えた色インピーダンス分布図を作成する作成手段と、
を具備することを特徴とする電気的インピーダンス測定装置。 - ヒストグラム生成手段は、正規化したヒストグラムを求め、作成手段は前記正規化したヒストグラムの振幅を対応する色により置き換えた色インピーダンス分布図を作成することを特徴とする請求項1に記載の電気インピーダンス測定装置。
- 色インピーダンス分布図を表示する表示制御手段を具備することを特徴とする請求項1または2に記載の電気的インピーダンス測定装置。
- 表示制御手段は、更に、インピーダンス分布のヒストグラムを表示することを特徴とする請求項3に記載の電気的インピーダンス測定装置。
- 表示制御手段は、色インピーダンス分布図を時間軸方向に並べて表示することを特徴とする請求項3または4に記載の電気的インピーダンス測定装置。
- ヒストグラム生成手段は、肺野を左右に二区分した区分領域を設定して区分領域におけるインピーダンス分布のヒストグラムを求め、
作成手段は、前記インピーダンス分布のヒストグラムの振幅を対応する色により置き換えた色インピーダンス分布図を作成する
ことを特徴とする請求項1乃至5のいずれか1項に記載の電気的インピーダンス測定装置。 - 区分領域におけるインピーダンス分布の重心を求める重心算出手段を具備し、
表示制御手段は前記重心を表示する
ことを特徴とする請求項1乃至6のいずれか1項に記載の電気的インピーダンス測定装置。 - 区分領域において経時変化するインピーダンス分布の重心を繋いだ重心変位曲線を作成する曲線作成手段を具備し、
表示制御手段は、前記重心変位曲線を表示すること
を特徴とする請求項1乃至7のいずれか1項に記載の電気的インピーダンス測定装置。 - 重心算出手段は、更に、肺野を左右に二区分した区分領域を設定して区分領域におけるインピーダンス分布の重心を求め、
表示制御手段は、前記重心を表示すること
を特徴とする請求項7または8に記載の電気的インピーダンス測定装置。 - 曲線作成手段は、肺野を左右に二区分した区分領域を設定して区分領域において経時変化するインピーダンス分布の重心を繋いだ重心変位曲線を求め、 表示制御手段は、前記重心変位曲線を表示すること
を特徴とする請求項8または9に記載の電気的インピーダンス測定装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014037524A JP6276067B2 (ja) | 2014-02-27 | 2014-02-27 | 電気的インピーダンス測定装置 |
CN201510085154.XA CN104873194A (zh) | 2014-02-27 | 2015-02-16 | 电阻抗测量设备 |
US14/625,336 US9636038B2 (en) | 2014-02-27 | 2015-02-18 | Electrical impedance measuring apparatus |
EP15155944.0A EP2913002A1 (en) | 2014-02-27 | 2015-02-20 | Electrical impedance measuring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014037524A JP6276067B2 (ja) | 2014-02-27 | 2014-02-27 | 電気的インピーダンス測定装置 |
Publications (2)
Publication Number | Publication Date |
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JP2015160004A JP2015160004A (ja) | 2015-09-07 |
JP6276067B2 true JP6276067B2 (ja) | 2018-02-07 |
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ID=52784884
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JP2014037524A Active JP6276067B2 (ja) | 2014-02-27 | 2014-02-27 | 電気的インピーダンス測定装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9636038B2 (ja) |
EP (1) | EP2913002A1 (ja) |
JP (1) | JP6276067B2 (ja) |
CN (1) | CN104873194A (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113273988B (zh) * | 2020-02-03 | 2022-10-11 | 西交利物浦大学 | 基于电流量的电阻抗成像方法、装置及存储介质 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1196691A (en) * | 1982-01-12 | 1985-11-12 | Bradley Fry | Reconstruction system and methods for impedance imaging |
JP4755801B2 (ja) * | 2000-06-09 | 2011-08-24 | シュテファン・ベーン | 電気インピーダンス・トモグラフィのデータにより得られる情報を表示するための方法及び装置 |
US20040092809A1 (en) | 2002-07-26 | 2004-05-13 | Neurion Inc. | Methods for measurement and analysis of brain activity |
US20050105789A1 (en) * | 2003-11-17 | 2005-05-19 | Isaacs Hugh S. | Method and apparatus for detecting, monitoring, and quantifying changes in a visual image over time |
WO2009027812A2 (en) * | 2007-08-31 | 2009-03-05 | Medicalgorithmics Sp. Zo.O | Reconstruction of geometry of a body component and analysis of spatial distribution of electrophysiological values |
WO2009042637A2 (en) * | 2007-09-24 | 2009-04-02 | Oregon Health & Science University | Non-invasive location and tracking of tumors and other tissues for radiation therapy |
EP2228009B1 (en) | 2009-03-09 | 2018-05-16 | Drägerwerk AG & Co. KGaA | Apparatus and method to determine functional lung characteristics |
-
2014
- 2014-02-27 JP JP2014037524A patent/JP6276067B2/ja active Active
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2015
- 2015-02-16 CN CN201510085154.XA patent/CN104873194A/zh not_active Withdrawn
- 2015-02-18 US US14/625,336 patent/US9636038B2/en active Active
- 2015-02-20 EP EP15155944.0A patent/EP2913002A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
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EP2913002A1 (en) | 2015-09-02 |
US20150238116A1 (en) | 2015-08-27 |
US9636038B2 (en) | 2017-05-02 |
CN104873194A (zh) | 2015-09-02 |
JP2015160004A (ja) | 2015-09-07 |
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