FR2425081A1 - Procede et appareil de representation visuelle de structures cachees par balayage ultra-sonore - Google Patents

Procede et appareil de representation visuelle de structures cachees par balayage ultra-sonore

Info

Publication number
FR2425081A1
FR2425081A1 FR7911006A FR7911006A FR2425081A1 FR 2425081 A1 FR2425081 A1 FR 2425081A1 FR 7911006 A FR7911006 A FR 7911006A FR 7911006 A FR7911006 A FR 7911006A FR 2425081 A1 FR2425081 A1 FR 2425081A1
Authority
FR
France
Prior art keywords
ultra
visual representation
hidden structures
distance
volume
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.)
Granted
Application number
FR7911006A
Other languages
English (en)
Other versions
FR2425081B1 (fr
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.)
Georgetown University
Original Assignee
Georgetown University
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 Georgetown University filed Critical Georgetown University
Publication of FR2425081A1 publication Critical patent/FR2425081A1/fr
Application granted granted Critical
Publication of FR2425081B1 publication Critical patent/FR2425081B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8993—Three dimensional imaging systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • 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
    • A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/48—Diagnostic techniques
    • A61B8/483—Diagnostic techniques involving the acquisition of a 3D volume of data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0609—Display arrangements, e.g. colour displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/916—Ultrasound 3-D imaging

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Immunology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Remote Sensing (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

L'INVENTION CONCERNE LES APPAREILS DE BALAYAGE. ELLE SE RAPPORTE A UN APPAREIL DANS LEQUEL DES MOTEURS 22 ET 32 PROVOQUENT LE DEPLACEMENT D'UN TRANSDUCTEUR 10 DE MANIERE QUE LE TRAJET DE SIGNAUX ULTRA-SONORES BALAYE UN ANGLE SOLIDE DANS LEQUEL UN VOLUME DETERMINE EST DELIMITE PAR FIXATION D'UNE FENETRE DE DISTANCE. L'ATTENUATION DES SIGNAUX EN FONCTION DE LA DISTANCE EST COMPENSEE DE MANIERE QU'UN DISPOSITIF D'AFFICHAGE BIDIMENSIONNEL PRESENTE UNE IMAGE OMBREE REPRESENTANT LES INTERFACES COMPRISES DANS LA PARTIE CHOISIE DU VOLUME. APPLICATION AUX APPAREILS DE DIAGNOSTIC MEDICAL FONCTIONNANT PAR BALAYAGE D'UN FAISCEAU D'ULTRA-SONS.
FR7911006A 1978-05-03 1979-05-02 Procede et appareil de representation visuelle de structures cachees par balayage ultra-sonore Granted FR2425081A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/902,740 US4271706A (en) 1978-05-03 1978-05-03 Ultrasonic scanner

Publications (2)

Publication Number Publication Date
FR2425081A1 true FR2425081A1 (fr) 1979-11-30
FR2425081B1 FR2425081B1 (fr) 1985-03-22

Family

ID=25416339

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911006A Granted FR2425081A1 (fr) 1978-05-03 1979-05-02 Procede et appareil de representation visuelle de structures cachees par balayage ultra-sonore

Country Status (14)

Country Link
US (1) US4271706A (fr)
JP (1) JPS54144786A (fr)
BE (1) BE875980A (fr)
CA (1) CA1123504A (fr)
DE (1) DE2911957B2 (fr)
DK (1) DK152154B (fr)
ES (1) ES480125A0 (fr)
FR (1) FR2425081A1 (fr)
GB (1) GB2020428B (fr)
IE (1) IE48106B1 (fr)
IT (1) IT1113927B (fr)
LU (1) LU81205A1 (fr)
MX (1) MX146784A (fr)
NL (1) NL187035C (fr)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2063474B (en) * 1979-10-24 1984-06-06 Olympus Optical Co Coeliac cavity ultrasonic diagnosis apparatus
US4485819A (en) * 1980-01-21 1984-12-04 Wolfgang Igl Mechanical accessory for commercially available compound apparatuses for echo mammography
US4399704A (en) * 1981-06-03 1983-08-23 Technicare Corporation Ultrasound scanner having compound transceiver for multiple optimal focus
US5262628A (en) * 1982-01-25 1993-11-16 Symbol Technologies, Inc. Narrow-bodied, single- and twin-windowed portable laser scanning head for reading bar code symbols
DE3224412A1 (de) * 1982-06-30 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Ultraschall-tomographiegeraet
DE3224453A1 (de) * 1982-06-30 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Ultraschall-tomographiegeraet
US4489729A (en) * 1982-09-03 1984-12-25 Medtronic, Inc. Ultrasound imaging system
US4454764A (en) * 1982-09-03 1984-06-19 Medtronic, Inc. Roller-ball ultrasonic imaging module
US4457311A (en) * 1982-09-03 1984-07-03 Medtronic, Inc. Ultrasound imaging system for scanning the human back
US4476873A (en) * 1982-09-03 1984-10-16 Medtronic, Inc. Ultrasound scanning system for skeletal imaging
US4458689A (en) * 1982-09-03 1984-07-10 Medtronic, Inc. Ultrasound scanner with mapped data storage
EP0129878B1 (fr) * 1983-06-23 1989-01-11 Matsushita Electric Industrial Co., Ltd. Sonde à ultrason munie d'un transducteur à deux degrés de liberté
US4747411A (en) * 1984-03-28 1988-05-31 National Biochemical Research Foundation Three-dimensional imaging system
US4798210A (en) * 1984-03-28 1989-01-17 National Biomedical Research Foundation Three-dimensional imaging system
US4722345A (en) * 1984-11-09 1988-02-02 Matsushita Electric Industrial Co., Ltd. Ultrasonic diagnostic multiple-sector image display system
JPS62170563U (fr) * 1986-04-18 1987-10-29
DE3751117T2 (de) * 1986-07-07 1995-07-20 Matsushita Electric Ind Co Ltd Ultraschallsonde.
US4757722A (en) * 1986-10-27 1988-07-19 Glover Marvin J Motion conversion apparatus
US4757823A (en) * 1987-01-27 1988-07-19 Hofmeister John F Method and apparatus for measuring uterine blood flow
DE8717504U1 (de) * 1987-10-19 1989-01-05 Siemens AG, 1000 Berlin und 8000 München Stoßwellenquelle mit zentralem Ultraschall-Ortungssystem
US4932414A (en) * 1987-11-02 1990-06-12 Cornell Research Foundation, Inc. System of therapeutic ultrasound and real-time ultrasonic scanning
GB2212267B (en) * 1987-11-11 1992-07-29 Circulation Res Ltd Methods and apparatus for the examination and treatment of internal organs
EP0317049B1 (fr) * 1987-11-13 1995-10-11 Advanced Diagnostic Medical Systems, Inc. Détecteur à ultrason
US4841979A (en) * 1988-01-25 1989-06-27 Capistrano Labs, Inc. Ultrasonic prostate probe assembly
US4896672A (en) * 1988-03-28 1990-01-30 Hewlett-Packard Company Hardware corection scheme for inter-frame image jitter in a scanning probe ultrasound imaging system
US5107844A (en) * 1989-04-06 1992-04-28 Olympus Optical Co., Ltd. Ultrasonic observing apparatus
FR2651990A1 (fr) * 1989-09-15 1991-03-22 Philips Electronique Lab Sonde pour echographie en trois dimensions.
US5552592A (en) * 1989-10-30 1996-09-03 Symbol Technologies, Inc. Slim scan module with dual detectors
CA2032204C (fr) * 1989-12-14 1995-03-14 Takashi Mochizuki Appareil d'echographie tridimensionnelle
JPH0773576B2 (ja) * 1992-05-27 1995-08-09 アロカ株式会社 三次元データ取込み用超音波探触子
US5329194A (en) * 1992-11-23 1994-07-12 Capistrano Labs, Inc. Ultrasonic peripheral vascular probe assembly
US5402789A (en) * 1992-11-23 1995-04-04 Capistrano Labs, Inc. Ultrasonic peripheral vascular probe assembly
US5351692A (en) * 1993-06-09 1994-10-04 Capistrano Labs Inc. Laparoscopic ultrasonic probe
US5445154A (en) * 1993-08-26 1995-08-29 Interspec, Inc. Ultrasonic probe assembly with linear actuator
US5396890A (en) * 1993-09-30 1995-03-14 Siemens Medical Systems, Inc. Three-dimensional scan converter for ultrasound imaging
US5842473A (en) * 1993-11-29 1998-12-01 Life Imaging Systems Three-dimensional imaging system
US5531119A (en) * 1994-04-19 1996-07-02 Capistrano Labs, Inc. Ultrasound probe with bubble trap
DE69612148T2 (de) * 1995-07-17 2001-07-19 Aloka Co. Ltd., Mitaka Ultraschall- Bildverarbeitungsvorrichtung und ein Verfahren zum Erzeugen eines Ultraschallbilds
US6099474A (en) * 1998-05-27 2000-08-08 Solek; Roman Ultrasound system for displaying real time simultaneous multiplane image
EP1034742A1 (fr) * 1999-03-09 2000-09-13 Kreztechnik Aktiengesellschaft Procédé pour examiner des objects avec des ultrasons
US6537219B2 (en) * 2001-04-04 2003-03-25 Koninklijke Philips Electronics N.V. Static focus ultrasound apparatus and method
US6780153B2 (en) * 2001-06-25 2004-08-24 Angelsen Bjoern A. J. Mechanism and system for 3-dimensional scanning of an ultrasound beam
WO2004006773A1 (fr) * 2002-07-15 2004-01-22 Eagle Ultrasound As Mecanisme et systeme permettant le balayage d'un faisceau ultrasonore dans un espace 3d
US7396574B2 (en) * 2003-05-28 2008-07-08 Robert C. Bogert Self-inflating cushion and footwear including same
US7299806B2 (en) * 2003-11-25 2007-11-27 General Electric Company Compliant probe interface assembly
US7905835B2 (en) * 2008-01-15 2011-03-15 General Electric Company Method for assessing mechanical properties of an elastic material
US8820164B2 (en) * 2012-01-31 2014-09-02 Sikorsky Aircraft Corporation Retroreflector for ultrasonic inspection
USD728849S1 (en) 2012-05-03 2015-05-05 Lumenpulse Lighting Inc. LED projection fixture
USD742059S1 (en) * 2014-02-28 2015-10-27 Leeo, Inc. Nightlight and air sensor
USD741539S1 (en) * 2014-02-28 2015-10-20 Leeo, Inc. Nightlight and air sensor
USD741728S1 (en) * 2014-02-28 2015-10-27 Leeo, Inc. Nightlight and air sensor
US10805775B2 (en) 2015-11-06 2020-10-13 Jon Castor Electronic-device detection and activity association
US10945706B2 (en) 2017-05-05 2021-03-16 Biim Ultrasound As Hand held ultrasound probe
CA3092799C (fr) 2018-03-13 2023-03-14 Verathon Inc. Balayage entrelace generalise au moyen d'une sonde ultrasonore
GB2597995A (en) * 2020-08-14 2022-02-16 Dolphitech As Ultrasound scanning system with adaptive gating

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454923A (en) * 1968-02-01 1969-07-08 Honeywell Inc Transducer control apparatus
US3518676A (en) * 1968-05-02 1970-06-30 Simonsen & Mustad As Apparatus for directional stabilization of an acoustic beam emitted from a shipborne echo sounding or sonar transducer
DE2060269A1 (de) * 1970-12-08 1972-06-29 Siemens Ag Nach dem Impuls-Echoverfahren arbeitendes Ultraschallgeraet
US3802253A (en) * 1972-08-18 1974-04-09 Nasa Ultrasonic biomedical measuring and recording apparatus
FR2298107A1 (fr) * 1975-01-17 1976-08-13 Greater Glasgon Health Board Dispositif d'exploration par ultrasons
US3979711A (en) * 1974-06-17 1976-09-07 The Board Of Trustees Of Leland Stanford Junior University Ultrasonic transducer array and imaging system
US4031743A (en) * 1973-05-03 1977-06-28 The Commonwealth Of Australia, C/O Dept. Of Health Ultrasonic echogram display

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334622A (en) * 1964-12-15 1967-08-08 Branson Instr Method and apparatus for electroacoustic exploration
FR1497496A (fr) * 1966-05-06 1967-10-13 Massiot Philips Sa Procédé et appareil d'analyse par ultrasons
US3832887A (en) * 1969-06-25 1974-09-03 Automation Ind Inc Ultrasonic inspection apparatus
US3792423A (en) * 1972-05-24 1974-02-12 Atomic Energy Commission Isometric imaging system
US3751976A (en) * 1972-07-24 1973-08-14 Gen Electric Ultrasonic inspection system with pseudo isometric display
US3778757A (en) * 1972-09-01 1973-12-11 Gen Electric Method and apparatus for visual imaging ultrasonic echo signals utilizing multiple transmitters for reduced specular reflection effects
US3881466A (en) * 1973-08-20 1975-05-06 Advanced Diagnostic Res Ultrasonic cross-sectional imaging system
JPS50135885A (fr) * 1974-04-05 1975-10-28
JPS5122292A (ja) * 1974-08-16 1976-02-21 Tokyo Shibaura Electric Co Choonpashindansochi
US3918297A (en) * 1974-10-03 1975-11-11 Gen Electric Acoustic imaging apparatus with gray scale display
GB1532218A (en) * 1975-06-26 1978-11-15 Nat Res Dev Acoustic holography apparatus
US4021771A (en) * 1975-07-07 1977-05-03 Holosonics, Inc. Scan acoustical holographic imaging apparatus
US4131022A (en) * 1976-03-04 1978-12-26 Rca Corporation Pulse-echo ultrasonic-imaging display system
AT358155B (de) * 1976-04-08 1980-08-25 Kretztechnik Gmbh Verfahren zur untersuchung von objekten mit ultraschall nach dem impuls-echoverfahren
DE2743485C3 (de) * 1977-09-28 1980-09-04 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung von biologisch bodenwirksamen Granulaten

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454923A (en) * 1968-02-01 1969-07-08 Honeywell Inc Transducer control apparatus
FR2001107A1 (fr) * 1968-02-01 1969-09-26 Honeywell Inc
US3518676A (en) * 1968-05-02 1970-06-30 Simonsen & Mustad As Apparatus for directional stabilization of an acoustic beam emitted from a shipborne echo sounding or sonar transducer
DE2060269A1 (de) * 1970-12-08 1972-06-29 Siemens Ag Nach dem Impuls-Echoverfahren arbeitendes Ultraschallgeraet
US3802253A (en) * 1972-08-18 1974-04-09 Nasa Ultrasonic biomedical measuring and recording apparatus
US4031743A (en) * 1973-05-03 1977-06-28 The Commonwealth Of Australia, C/O Dept. Of Health Ultrasonic echogram display
US3979711A (en) * 1974-06-17 1976-09-07 The Board Of Trustees Of Leland Stanford Junior University Ultrasonic transducer array and imaging system
FR2298107A1 (fr) * 1975-01-17 1976-08-13 Greater Glasgon Health Board Dispositif d'exploration par ultrasons

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/78 *

Also Published As

Publication number Publication date
FR2425081B1 (fr) 1985-03-22
US4271706A (en) 1981-06-09
IE790879L (en) 1979-11-03
JPS6221536B2 (fr) 1987-05-13
DE2911957B2 (de) 1981-07-16
ES8200555A1 (es) 1981-11-16
LU81205A1 (fr) 1979-11-07
IT7922313A0 (it) 1979-05-02
BE875980A (fr) 1979-11-05
IE48106B1 (en) 1984-10-03
GB2020428B (en) 1982-12-22
GB2020428A (en) 1979-11-14
NL187035C (nl) 1991-05-01
JPS54144786A (en) 1979-11-12
MX146784A (es) 1982-08-12
CA1123504A (fr) 1982-05-11
NL187035B (nl) 1990-12-03
NL7903435A (nl) 1979-11-06
IT1113927B (it) 1986-01-27
DK180779A (da) 1979-11-04
DK152154B (da) 1988-02-01
ES480125A0 (es) 1981-11-16
DE2911957A1 (de) 1979-11-08

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