[go: up one dir, main page]

WO1994018890A1 - Combinaison de signaux d'electrocardiogramme et d'image ultrasonore - Google Patents

Combinaison de signaux d'electrocardiogramme et d'image ultrasonore Download PDF

Info

Publication number
WO1994018890A1
WO1994018890A1 PCT/DE1994/000135 DE9400135W WO9418890A1 WO 1994018890 A1 WO1994018890 A1 WO 1994018890A1 DE 9400135 W DE9400135 W DE 9400135W WO 9418890 A1 WO9418890 A1 WO 9418890A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
ultrasound
location
activity
applicator
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.)
Ceased
Application number
PCT/DE1994/000135
Other languages
German (de)
English (en)
Inventor
Helmut Reichenberger
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO1994018890A1 publication Critical patent/WO1994018890A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4245—Details of probe positioning or probe attachment to the patient involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A61B5/1077—Measuring of profiles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/352—Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Clinical applications
    • A61B8/0833—Clinical applications involving detecting or locating foreign bodies or organic structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4245—Details of probe positioning or probe attachment to the patient involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient
    • A61B8/4263—Details of probe positioning or probe attachment to the patient involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient using sensors not mounted on the probe, e.g. mounted on an external reference frame

Definitions

  • the invention relates to a device and a method for linking at least one center of intracardial activity localized from an electrocardiogram with an ultrasound sectional image.
  • the non-invasive registration of electrical potentials by means of electrodes on the skin in the form of an electrocardiogram has long had a firm and meaningful place in the medical diagnosis of the heart.
  • the potentials on the surface of the body originate in electrical current pulses that occur periodically or sporadically in the heart and are generally not stationary.
  • a center or several centers of intracardial activity can be localized from the potential distribution on the surface of the body by means of a body model which simulates the essential electrical properties of the thorax.
  • a first simplification of the method results when the localization of the cardiac activity is carried out from a magnetocardiogram and the anatomical data are obtained by means of an ultrasound scan, as described in WO 92/04862. If the ultrasound scanning is carried out without a rearrangement of the patient, then it is sufficient that the coordinate system of the image data and the coordinate system of magnetocardiogram data have a fixed relationship to one another. The data are then linked to one another after calibration of the coordinate systems. Disadvantages are, on the one hand, the large amount of equipment required to locate the activity and, on the other hand, that the data are available in two coordinate systems.
  • the invention is based on the object of specifying a simply constructed device and a simple method with which image data of the anatomical structure and localized centers of intracardial activity can be linked together.
  • the first-mentioned object is achieved by a device with the features of claim 1.
  • the second object is achieved by methods having the features of claim 6.
  • the simple structure and the simple method is made possible in that the image data and the magnetocardiogram data are determined in the same coordinate system.
  • FIG. 1 shows in a block diagram the structure of a device for linking image data of the anatomy with localized centers of intracardiac electrical activity.
  • Electrodes 8 are distributed around the entire upper body, only three electrodes 8 are shown here for reasons of clarity.
  • the electrodes 8 are with an electrocardiography device
  • EKG device 10 with which the time course of the potentials on the individual electrodes 8 can be recorded.
  • the multichannel detection of the potentials on the upper body 6 is also known as EKG mapping.
  • the position of the electrodes 8 is determined with a position detection system 12, which includes an operating device 14, a transmitter 16 and a receiver 18.
  • the position detection system 12 used here works on the basis of a known electromagnetic method, in which the transmitter 16 emits electromagnetic waves which are received by the receiver 18 designed as an antenna.
  • the operating device 14 also determines three orientation angles from the received signals, which enable a statement about the direction of the transmitter 16 in the room.
  • Such a position detection system 12 is marketed under the name "Bird” by Ascension Technology Corp. Burlington, Vermont, USA.
  • non-contact position detection systems 12 can also be used, which determine the location and the direction of a freely movable part of the position detection system.
  • position detection systems 12 via air-ultrasonic waves or also via light or infrared waves.
  • position detection systems 12 can also be used, in which a movable part is attached to an articulated arm with linear position sensors or angle sensors arranged therein.
  • the implementation of the position detection system 12 as an articulated arm is not so easy to handle.
  • Electrodes 8 can have corresponding recesses in the patient bed 2, but these are not shown here. Rather, the flat contour of the back is replaced by the contour of the bed surface of the patient bed 2.
  • the outputs of the EKG device 10 and the operating device 14 are connected to the inputs of an evaluation unit 20, with which the location of at least one center of activity as a function of the positions of the electrodes 8 detected with the position detection system 12 from the time profile of the Electrocardiogram is determined.
  • the advantage here is that with a large number of electrodes 8, which is of the order of about 30 to 80, and with all-round arrangement of the electrodes 8 on the upper body 6 of the patient, additional detection of the contour of the upper body 6 can be dispensed with.
  • the positions of the electrodes 8 then define the contour of the upper body 6 with sufficient accuracy. If the number of electrodes is smaller or the accuracy is to be increased, the
  • Contour of the upper body 6 determined by scanning other points.
  • a body model of the upper body is created in the evaluation unit 20, in which the electrical properties of the upper body are simulated.
  • a suitable body model is e.g. B. in Bommel, F. et al .: "Localization of current dipoles in the human heart with analytical and boundary element methods, 8th Int. Conf. On Biomagnetism, Weg, 18-24, 8. 1991, Book of Abstracts, 351 -352.
  • one or more current dipoles are varied in location and size in an iterative process until a model potential distribution generated by the current dipoles on the surface of the body model best matches the measured potential distribution.
  • the number and positions of the current dipoles ascertained are each considered to be the center of cardiac activity.
  • a three-dimensional image data set is created by means of an ultrasound applicator 22, which is connected to an ultrasound image device 24.
  • the ultrasound applicator 22 is designed as a mechanical or electronic sector scanner.
  • the creation of the three-dimensional image data record using ultrasound scanning is particularly advantageous because it can be carried out without repositioning the patient. This is a prerequisite so that the EKG data and the image data can be recorded in the same coordinate system.
  • the examination position itself can be any if it is ensured that it remains unchanged during the examination. In particular, the examination can also be carried out in the left side position which is particularly favorable for the ultrasound scanning.
  • a further advantage is that the EKG and ultrasound scanning can take place in a time-related manner and thus changes in the heart position, for. B. can be avoided due to different stomach filling.
  • the position of the electrodes 8 and the position of the ultra sound applicator 22 is determined with the same position detection system 12.
  • the transmitter 16 is plugged onto the ultrasound applicator 22 and the tip of the ultrasound applicator 22 is designed as a scanning pen.
  • the positions of the electrodes 8 are determined in a predetermined order by the examiner bringing the stylus and thus the transmitter 16 to the electrodes 8.
  • the surface of the ultrasound applicator 22 shaped as a scanning pin touches the center of the electrodes 8, the current position data of the
  • Transmitter 16 passed on by the operating device as the position of the respective electrode 8 to the evaluation unit 20.
  • This position can e.g. B. automatically when touched or with the help of a button to be operated by the examiner.
  • the evaluation unit may lead
  • the stylus arranged on the ultrasound applicator 22 has a fixed relation to the cutting plane scanned by the ultrasound applicator 22.
  • the position of the ultrasound applicator 22 when the cutting planes are scanned is also recorded by the operating device, the scanned cutting plane being associated with the respective position and direction of the ultrasound applicator 22 at the same time.
  • the three-dimensional image data record can be created both before the EKG measurement and after the EKG measurement, as long as it is ensured that the patient position remains unchanged.
  • the evaluation unit 20 and the ultrasound imaging device 24 are connected to an image display unit 26.
  • the monitor of the ultrasound imaging device 24 can also be used as the image display unit 26.
  • Positions of the current dipoles ascertained by evaluation unit 20 are marked in a sectional image if the sectional image this position includes or entered in a sectional image closest to the position. It is also possible to use secondary sections reconstructed from original pictures or also section pictures generated by interpolation in order to be able to display the position exactly in the section picture.
  • the position can also be marked in a top view of the examination area, such as e.g. B. in a pseudo-three-dimensional representation of the heart.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

L'invention concerne un appareil destiné à combiner au moins un centre d'activité intracardiaque, localisé à partir d'un électrocardiogramme, avec une image ultrasonore. Cet appareil comprend un nombre d'électrodes (8) reliées à un électrocardiographe (10) et un applicateur ultrasonore (22) relié à un appareil ultrasonore (24). Un système de détection de position (12) permet de déterminer la position des électrodes, ainsi que la position et l'orientation de l'applicateur ultrasonore (22). Une unité d'évaluation (20) reliée au système de détection de la position (12) et à l'électrocardiographe (10) détermine l'emplacement de l'activité , sur la base de l'électrocardiogramme et des positions des électrodes. Une unité d'affichage (26) reliée à l'appareil ultrasonore (24) et à l'unité d'évaluation (20) indique simultanément l'emplacement de l'activité et l'image ultrasonore dans laquelle se trouve l'emplacement de l'activité. L'invention concerne également un procédé d'exploitation dudit appareil.
PCT/DE1994/000135 1993-02-26 1994-02-09 Combinaison de signaux d'electrocardiogramme et d'image ultrasonore Ceased WO1994018890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934306037 DE4306037A1 (de) 1993-02-26 1993-02-26 Gerät und Verfahren zum Verknüpfen mindestens eines aus einem Elektrokardiogramm lokalisierten Zentrums intrakardialer Aktivität mit einem Ultraschall-Schnittbild
DEP4306037.4 1993-02-26

Publications (1)

Publication Number Publication Date
WO1994018890A1 true WO1994018890A1 (fr) 1994-09-01

Family

ID=6481450

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/000135 Ceased WO1994018890A1 (fr) 1993-02-26 1994-02-09 Combinaison de signaux d'electrocardiogramme et d'image ultrasonore

Country Status (2)

Country Link
DE (1) DE4306037A1 (fr)
WO (1) WO1994018890A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5924989A (en) * 1995-04-03 1999-07-20 Polz; Hans Method and device for capturing diagnostically acceptable three-dimensional ultrasound image data records
DE19608971A1 (de) * 1995-04-03 1996-10-10 Hans Dr Polz Verfahren und Vorrichtung zur Erfassung von diagnostisch verwertbaren, dreidimensionalen Ultraschallbilddatensätzen
DE19622078A1 (de) * 1996-05-31 1997-12-04 Siemens Ag Vorrichtung zum Lokalisieren von Aktionsströmen im Herzen
US6533455B2 (en) 2000-08-31 2003-03-18 Siemens Aktiengesellschaft Method for determining a coordinate transformation for use in navigating an object
DE10137914B4 (de) * 2000-08-31 2006-05-04 Siemens Ag Verfahren zur Ermittlung einer Koordinatentransformation für die Navigation eines Objekts
US6524250B1 (en) * 2000-09-19 2003-02-25 Pearl Technology Holdings, Llc Fat layer thickness mapping system to guide liposuction surgery
DE10328765B4 (de) * 2003-06-25 2005-11-24 aviCOM Gesellschaft für angewandte visuelle Systeme mbH Vorrichtung und Verfahren zur Verbindung der Darstellung des elektrischen Herzfeldes mit der Darstellung des zugehörigen Herzens
DE102005045093A1 (de) 2005-09-21 2007-04-05 Siemens Ag Verfahren zur Lokalisation eines in den Körper eines Untersuchungsobjekts eingeführten medizinischen Instruments

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508730A1 (de) * 1985-03-12 1986-09-18 Siemens AG, 1000 Berlin und 8000 München Messvorrichtung fuer medizinische zwecke
US4896673A (en) * 1988-07-15 1990-01-30 Medstone International, Inc. Method and apparatus for stone localization using ultrasound imaging
WO1990013259A1 (fr) * 1989-05-03 1990-11-15 Tomtec Tomographic Technologies Gmbh Dispositif d'echocardiographie trans×sophagienne
WO1992004862A1 (fr) * 1990-09-18 1992-04-02 Siemens Aktiengesellschaft Procede et dispositif pour l'etablissement d'une correspondance anatomique correctement localisee des centres d'excitation de signaux biomagnetiques
US5197476A (en) * 1989-03-16 1993-03-30 Christopher Nowacki Locating target in human body

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100916A (en) * 1976-04-27 1978-07-18 King Donald L Three-dimensional ultrasonic imaging of animal soft tissue
US4736751A (en) * 1986-12-16 1988-04-12 Eeg Systems Laboratory Brain wave source network location scanning method and system
US4961428A (en) * 1988-05-02 1990-10-09 Northeastern University Non-invasive method and apparatus for describing the electrical activity of the surface of an interior organ
EP0359864B1 (fr) * 1988-09-23 1993-12-01 Siemens Aktiengesellschaft Dispositif et procédé de mesure de champs magnétiques faibles, dépendant de la position et du temps

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508730A1 (de) * 1985-03-12 1986-09-18 Siemens AG, 1000 Berlin und 8000 München Messvorrichtung fuer medizinische zwecke
US4896673A (en) * 1988-07-15 1990-01-30 Medstone International, Inc. Method and apparatus for stone localization using ultrasound imaging
US5197476A (en) * 1989-03-16 1993-03-30 Christopher Nowacki Locating target in human body
WO1990013259A1 (fr) * 1989-05-03 1990-11-15 Tomtec Tomographic Technologies Gmbh Dispositif d'echocardiographie trans×sophagienne
WO1992004862A1 (fr) * 1990-09-18 1992-04-02 Siemens Aktiengesellschaft Procede et dispositif pour l'etablissement d'une correspondance anatomique correctement localisee des centres d'excitation de signaux biomagnetiques

Also Published As

Publication number Publication date
DE4306037A1 (de) 1994-09-08

Similar Documents

Publication Publication Date Title
DE69318944T2 (de) Lagebestimmungssystem und Verfahren
DE69030926T2 (de) Sondenkorrelierte anzeige von anatomischen bilddaten
AU730409B2 (en) Apparatus for body surface mapping
DE60010309T2 (de) Verfahren zur echtzeitdarstellung von medizinischen bildern
EP1237493B1 (fr) Dispositif destines au deplacement d'instruments, de segments osseux, de tissus et d'organes
EP0652726B1 (fr) Procede de visualisation de l'interieur de corps
DE69822273T2 (de) Rahmenlose stereotaktische chirurgische Vorrichtung
DE69130256T2 (de) Verfahren und vorrichtung zur darstellung elektrischer aktivität in einem biologischen system
US6358214B1 (en) ECG scanner
DE60120245T2 (de) Katheter zur Erzeugung einer elektrischen Darstellung einer Herzkammer
DE69329886T2 (de) Verfahren zur Bestimmung der Lage eines Organs
EP0955927B1 (fr) Systeme de detection de deplacement de segments osseux
DE69508955T2 (de) Bio-elektrischer aufnehmer
DE60114142T2 (de) Auswertungseinrichtung des gleichgewichtstandes des menschlichen körpers
DE19622078A1 (de) Vorrichtung zum Lokalisieren von Aktionsströmen im Herzen
DE19844152A1 (de) System und Verfahren zum Lokalisieren eines Katheters
EP1245191A2 (fr) Méthode et système d'imagerie à ultrason pour la détermination de la position d'un catheter
DE102007009764A1 (de) Verfahren und Vorrichtung zur visuellen Unterstützung einer Katheteranwendung
DE19915689A1 (de) Vorrichtung und Verfahren zum Lokalisieren elektrisch aktiver Orte innerhalb eines Lebewesens
DE2801612A1 (de) Verfahren zur erstellung eines horizontal-vektorkardiogramms fuer ambulant behandelte patienten
EP0945104A1 (fr) Systéme et procédé destinés à la visualisation de l'activité d'un organe
EP0476495A1 (fr) Exposition à trois dimensions des images à ultrasons
WO1994018890A1 (fr) Combinaison de signaux d'electrocardiogramme et d'image ultrasonore
DE102005045073B4 (de) Verfahren zum visuellen Unterstützen einer invasiven Untersuchung oder Behandlung des Herzens mit Hilfe eines invasiven Instruments
DE102005026251A1 (de) Drahtlose (frei verfügbare) Registrierung auf Bezugsmarkenbasis und Oberflächenregistrierung auf EM-Verzerrungsbasis

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase