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DE68929239D1 - Ultraschall-Dichtemessgerät und Verfahren - Google Patents

Ultraschall-Dichtemessgerät und Verfahren

Info

Publication number
DE68929239D1
DE68929239D1 DE68929239T DE68929239T DE68929239D1 DE 68929239 D1 DE68929239 D1 DE 68929239D1 DE 68929239 T DE68929239 T DE 68929239T DE 68929239 T DE68929239 T DE 68929239T DE 68929239 D1 DE68929239 D1 DE 68929239D1
Authority
DE
Germany
Prior art keywords
density meter
ultrasonic density
ultrasonic
meter
density
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 - Fee Related
Application number
DE68929239T
Other languages
English (en)
Other versions
DE68929239T2 (de
Inventor
Phillip J Rossman
Scott A Weiner
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.)
GE Lunar Corp
Original Assignee
Lunar Corp
GE Lunar 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 Lunar Corp, GE Lunar Corp filed Critical Lunar Corp
Application granted granted Critical
Publication of DE68929239D1 publication Critical patent/DE68929239D1/de
Publication of DE68929239T2 publication Critical patent/DE68929239T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00Diagnosis using ultrasonic, sonic or infrasonic waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/04Analysing solids
    • G01N29/06Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0609Display arrangements, e.g. colour displays
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08Clinical applications
    • A61B8/0875Clinical applications for diagnosis of bone
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/04Analysing solids
    • G01N29/07Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/04Analysing solids
    • G01N29/11Analysing solids by measuring attenuation of acoustic waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/24Probes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating 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
    • G01N29/34Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/01Indexing codes associated with the measuring variable
    • G01N2291/011Velocity or travel time
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/01Indexing codes associated with the measuring variable
    • G01N2291/015Attenuation, scattering
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/024Mixtures
    • G01N2291/02483Other human or animal parts, e.g. bones
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/10Number of transducers
    • G01N2291/106Number of transducers one or more transducer arrays

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Acoustics & Sound (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Rheumatology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
DE68929239T 1988-05-11 1989-05-09 Ultraschall-Dichtemessgerät und Verfahren Expired - Fee Related DE68929239T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/193,295 US4930511A (en) 1988-05-11 1988-05-11 Ultrasonic densitometer device and method

Publications (2)

Publication Number Publication Date
DE68929239D1 true DE68929239D1 (de) 2000-09-14
DE68929239T2 DE68929239T2 (de) 2001-01-25

Family

ID=22713031

Family Applications (2)

Application Number Title Priority Date Filing Date
DE68929055T Expired - Fee Related DE68929055T2 (de) 1988-05-11 1989-05-09 Ultraschall-Dichtemessgerät und Verfahren
DE68929239T Expired - Fee Related DE68929239T2 (de) 1988-05-11 1989-05-09 Ultraschall-Dichtemessgerät und Verfahren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE68929055T Expired - Fee Related DE68929055T2 (de) 1988-05-11 1989-05-09 Ultraschall-Dichtemessgerät und Verfahren

Country Status (9)

Country Link
US (1) US4930511A (de)
EP (4) EP0341969A3 (de)
JP (1) JP2885377B2 (de)
KR (1) KR0149847B1 (de)
AU (1) AU609686B2 (de)
CA (1) CA1323090C (de)
DE (2) DE68929055T2 (de)
FI (1) FI892282L (de)
IL (1) IL90263A (de)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5840029A (en) * 1988-05-11 1998-11-24 Lunar Corporation Imaging ultrasonic densitometer
US5349959A (en) * 1988-05-11 1994-09-27 Lunar Corporation Ultrasonic densitometer device and method
US5603325A (en) * 1988-05-11 1997-02-18 Lunar Corporation Ultrasonic densitometer with width compensation
US6277076B1 (en) * 1988-05-11 2001-08-21 Lunar Corporation Ultrasonic densitometer with pre-inflated fluid coupling membranes
US6027449A (en) * 1988-05-11 2000-02-22 Lunar Corporation Ultrasonometer employing distensible membranes
US5042489A (en) * 1988-05-11 1991-08-27 Lunar Corporation Ultrasonic densitometer device and method
US5483965A (en) * 1988-05-11 1996-01-16 Lunar Corporation Ultrasonic densitometer device and method
US5054490A (en) * 1988-05-11 1991-10-08 Lunar Corporation Ultrasonic densitometer device and method
US5343863A (en) * 1988-05-11 1994-09-06 Lunar Corporation Ultrasonic densitometer device and method
US5261274A (en) * 1990-05-25 1993-11-16 Daniel M. Nemirow Dynamic volumetric instrument gauge
IL94616A (en) * 1990-06-04 1994-06-24 Medicano Systems Ltd Apparatus and method for calculating the mechanical properties of a solid
US5426979A (en) * 1990-06-04 1995-06-27 Medicano Systems Ltd. Frequency spectrum apparatus for determining mechanical properties
US5063931A (en) * 1990-11-05 1991-11-12 Hewlett-Packard Company Method and apparatus for signal dependent gain control
US5103827A (en) * 1990-12-14 1992-04-14 Medasonics, Inc. Apparatus for and a method of distinguishing ultrasound signals returned from bubbles and particles moving in a fluid from signals due to ultrasound transducer motion
US5134999A (en) * 1991-05-22 1992-08-04 Walker Magnetics Group, Inc. Ultrasonic transducer assembly
US5218963A (en) * 1991-10-15 1993-06-15 Lunar Corporation Ultrasonic bone analysis device and method
US5339691A (en) * 1992-03-25 1994-08-23 The United States Of America As Represented By The Secretary Of The Navy Ultrasonic test system
GB9213220D0 (en) * 1992-06-22 1992-08-05 Langton Christian M Ultrasound bone analyser
US5720290A (en) * 1993-04-07 1998-02-24 Metra Biosystems, Inc. Apparatus and method for acoustic analysis of bone using optimized functions of spectral and temporal signal components
US5396891A (en) * 1993-04-07 1995-03-14 Osteo Sciences Corporation System and method for external acoustic bone velocity measurement
JPH0775606B2 (ja) * 1993-06-30 1995-08-16 アロカ株式会社 生体組織診断装置
JP2596701B2 (ja) * 1993-07-22 1997-04-02 アロカ株式会社 骨評価装置
US5723791A (en) 1993-09-28 1998-03-03 Defelsko Corporation High resolution ultrasonic coating thickness gauge
FR2721711B1 (fr) * 1994-06-24 1996-07-26 Gec Alsthom Stein Ind Dispositif de mesure de la quantité de charbon dans un broyeur à boulets.
US5535750A (en) * 1994-09-30 1996-07-16 Kabushiki Kaisha Ishikawa Seisakusho, Ltd. Method and apparatus for evaluating the progress of osteoporosis by ultrasonic signals
CA2183054A1 (en) * 1994-12-14 1996-06-15 Tetsuya Ishii Osteoporosis diagnosing apparatus and method
JP2840040B2 (ja) * 1994-12-22 1998-12-24 アロカ株式会社 組織内音速測定方法
US6517487B1 (en) * 1995-03-01 2003-02-11 Lunar Corporation Ultrasonic densitometer with opposed single transducer and transducer array
US6012779A (en) * 1997-02-04 2000-01-11 Lunar Corporation Thin film acoustic array
US6004272A (en) * 1995-06-07 1999-12-21 Hologic, Inc. Ultrasonic bone testing apparatus with repeatable positioning and repeatable coupling
US5755228A (en) * 1995-06-07 1998-05-26 Hologic, Inc. Equipment and method for calibration and quality assurance of an ultrasonic bone anaylsis apparatus
US6352512B1 (en) 1995-06-07 2002-03-05 Hologic, Inc. Bone analysis apparatus and method for calibration and quality assurance of an ultrasonic bone analysis apparatus
IL116701A0 (en) 1995-10-04 1996-10-16 Sunlight Ultrasound Technologi Ultrasonic device for determining bone characteristics
WO1997019641A1 (en) 1995-11-29 1997-06-05 Sekisui Kagaku Kogyo Kabushiki Kaisya Apparatus and method for diagnosing osteoporosis
US5895357A (en) * 1996-01-29 1999-04-20 Aloka Co., Ltd. Bone assessment apparatus
US5902240A (en) * 1996-02-21 1999-05-11 Sekisui Kagaku Kogyo Kabushiki Kaisya Method and apparatus for osteoporosis diagnosis
US5785041A (en) * 1996-03-26 1998-07-28 Hologic Inc. System for assessing bone characteristics
US7112173B1 (en) 1998-03-03 2006-09-26 Sunlight Medical Ltd. Determination of acoustic velocity in bone
US6585649B1 (en) * 1998-05-02 2003-07-01 John D. Mendlein Methods and devices for improving ultrasonic measurements using multiple angle interrogation
US6013031A (en) * 1998-03-09 2000-01-11 Mendlein; John D. Methods and devices for improving ultrasonic measurements using anatomic landmarks and soft tissue correction
US6077224A (en) * 1998-03-23 2000-06-20 Lang; Philipp Methods and device for improving broadband ultrasonic attenuation and speed of sound measurements using anatomical landmarks
NL1009847C2 (nl) * 1998-08-12 2000-02-15 Instromet Ultrasonics Bv Werkwijze en inrichting voor het bepalen van de slibconcentratie in een vloeistof.
KR20010090833A (ko) * 1998-11-08 2001-10-19 추후제출 뼈 속도 결정
KR100318699B1 (ko) * 1999-06-30 2001-12-28 강중길 초음파 스캐닝을 통한 골다공증 진단기
GB2356932A (en) * 1999-12-03 2001-06-06 Prec Acoustics Ltd Measuring tissue properties
US6641537B2 (en) 2001-07-20 2003-11-04 Ge Medical Systems Global Technology Company, Llc Multi-zone transmitter for quantitative ultrasound and image measurement
US6436051B1 (en) 2001-07-20 2002-08-20 Ge Medical Systems Global Technology Company, Llc Electrical connection system for ultrasonic receiver array
WO2003009762A1 (en) 2001-07-24 2003-02-06 Sunlight Medical, Ltd. Joint analysis using ultrasound
WO2003009758A1 (en) * 2001-07-24 2003-02-06 Sunlight Medical, Ltd. Bone age assessment using ultrasound
US7854701B2 (en) * 2003-07-24 2010-12-21 Stergios Stergiopoulos Non-invasive monitoring of intracranial dynamic effects and brain density fluctuations
JP2006014979A (ja) * 2004-07-02 2006-01-19 Oyo Denki Kk 骨強度測定装置
CN100553565C (zh) * 2005-11-29 2009-10-28 宏扬(河北)医疗器械有限公司 一种测定骨骼中声速的方法
WO2007069775A1 (ja) * 2005-12-14 2007-06-21 Teijin Pharma Limited 照射位置確認機能を有する医療用超音波装置
US8419643B2 (en) * 2006-09-21 2013-04-16 Artann Laboratories Inc. Ultrasonic method and apparatus for assessment of bone
US8421479B2 (en) * 2009-06-30 2013-04-16 Navisense Pulsed echo propagation device and method for measuring a parameter
CN102711624B (zh) 2009-10-02 2015-11-25 皇家飞利浦电子股份有限公司 使用身体上或身体中通信技术来获得关于用户的身体成分的信息的系统和方法
NO20130638A1 (no) * 2013-05-06 2014-11-07 Mecsense As Innretning og fremgangsmåte for kontinuerlig deteksjon av endringer i densitet i fluider og faste stoffer så vel som anvendelse av innretningen
DE102015118226A1 (de) 2015-07-17 2017-01-19 Sonovum AG Vorrichtung zur Untersuchung von Materialien durch akustische Spektroskopie

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439130A (en) * 1943-11-20 1948-04-06 United Aircraft Corp Surface and shear wave method and apparatus
SU123748A1 (ru) * 1959-02-19 1959-11-30 И.С. Климов Приспособление дл определени упругих свойств на образцах горных пород и других материалов
US3345863A (en) * 1964-10-28 1967-10-10 Branson Instr Method and apparatus for determining the marbling in the muscle of a live animal by ultrasonics
US3477422A (en) * 1965-10-15 1969-11-11 John M Jurist Jr Vibratory bone density determination method and apparatus
US3587561A (en) * 1969-06-05 1971-06-28 Hoffmann La Roche Ultrasonic transducer assembly for biological monitoring
US3648685A (en) * 1969-06-25 1972-03-14 James A Hepp Photoelectric probes for determining the density of body tissue for x-ray purposes
US3664180A (en) * 1970-07-15 1972-05-23 Us Agriculture Ultrasonic detection of lumber defects
US3711129A (en) * 1970-08-03 1973-01-16 Armco Steel Corp Resilient coupling
US3782177A (en) * 1972-04-20 1974-01-01 Nasa Method and apparatus for non-destructive testing
US3847141A (en) * 1973-08-08 1974-11-12 Nasa Ultrasonic bone densitometer
FR2318420A1 (fr) * 1975-07-17 1977-02-11 Guiset Jacques Procede et dispositif pour la mesure d'une pression ou d'une distance par ultra-sons
US4048986A (en) * 1975-08-25 1977-09-20 Novar Electronics Corporation Individual identification and diagnosis using wave polarization
US4056970A (en) * 1975-10-30 1977-11-08 Yeda Research And Development Co., Ltd. Ultrasonic velocity and thickness gage
US4105018A (en) * 1976-02-02 1978-08-08 University Of Utah Acoustic examination, material characterization and imaging of the internal structure of a body by measurement of the time-of-flight of acoustic energy therethrough
US4138999A (en) * 1976-10-29 1979-02-13 Thomas D. Eckhart Anatomy testing and measuring device
DE2741338A1 (de) * 1977-09-14 1979-03-22 Industrie Automation Gmbh & Co Einrichtung zur bestimmung der mechanischen eigenfrequenz von blutgefaessen, sehnen, knochen oder aehnlichen organen in einem koerper
JPS54151397U (de) * 1978-04-14 1979-10-20
JPS5514066A (en) * 1978-07-19 1980-01-31 Tokyo Shibaura Electric Co Ultrasoniccwave diagnosis device
US4361154A (en) * 1978-07-28 1982-11-30 Massachusetts Institute Of Technology Method for establishing, in vivo, bone strength
US4233845A (en) * 1978-07-28 1980-11-18 Massachusetts Institute Of Technology Method of assessing performance potential of a quadruped
US4421119A (en) * 1979-06-15 1983-12-20 Massachusetts Institute Of Technology Apparatus for establishing in vivo, bone strength
US4235243A (en) * 1978-10-23 1980-11-25 Subrata Saha Method and apparatus for facilitating the non-invasive, non-contacting study of piezoelectric members
US4250895A (en) * 1979-03-23 1981-02-17 Forsyth Dental Infirmary For Children Periodontal probe
US4316183A (en) * 1980-10-24 1982-02-16 Bestobell Mobrey Limited Liquid level sensor
BR8107560A (pt) * 1981-11-19 1983-07-05 Luiz Romariz Duarte Estimulacao ultra-sonica da consolidacao de fraturas osseas
US4476873A (en) * 1982-09-03 1984-10-16 Medtronic, Inc. Ultrasound scanning system for skeletal imaging
US4457311A (en) * 1982-09-03 1984-07-03 Medtronic, Inc. Ultrasound imaging system for scanning the human back
JPS6080442A (ja) * 1983-10-06 1985-05-08 テルモ株式会社 超音波測定方法およびその装置
US4522068A (en) * 1983-11-21 1985-06-11 Electro-Flow Controls, Inc. Ultrasonic densitometer for liquid slurries
JPS60195473A (ja) * 1984-03-17 1985-10-03 Terumo Corp 超音波測定装置
JPS6111658A (ja) * 1984-06-28 1986-01-20 Terumo Corp 超音波測定方法およびその装置
JPS6249834A (ja) * 1985-08-30 1987-03-04 富士物産株式会社 生体の骨性検査法及びその装置
JPS6268441A (ja) * 1985-09-24 1987-03-28 株式会社東芝 超音波組織診断装置
US4669482A (en) * 1985-10-28 1987-06-02 Board Of Regents, The University Of Texas System Pulse echo method and apparatus for sound velocity estimation in vivo
US4774959A (en) * 1986-01-10 1988-10-04 Walker Sonix A/S Narrow band ultrasonic frequency attentuation bone measurement system
US4913157A (en) * 1986-06-03 1990-04-03 Analog Devices, Inc. Ultrasound method and apparatus for evaluating, in vivo, bone conditions
JPS6382633A (ja) * 1986-09-29 1988-04-13 株式会社東芝 超音波診断装置
AU599500B2 (en) * 1987-07-16 1989-01-19 University Of Melbourne, The In-vivo bone quality measurement

Also Published As

Publication number Publication date
EP0728443A2 (de) 1996-08-28
DE68929239T2 (de) 2001-01-25
EP0341969A2 (de) 1989-11-15
FI892282A0 (fi) 1989-05-11
AU609686B2 (en) 1991-05-02
EP0728443B1 (de) 2000-08-09
JPH02104337A (ja) 1990-04-17
EP0721765A2 (de) 1996-07-17
FI892282A7 (fi) 1989-11-12
DE68929055T2 (de) 2000-01-27
KR890017532A (ko) 1989-12-16
IL90263A (en) 1997-04-15
EP0341969A3 (de) 1990-09-12
EP0920832A3 (de) 1999-07-21
AU3467289A (en) 1989-11-23
KR0149847B1 (ko) 1999-03-30
US4930511A (en) 1990-06-05
EP0920832A2 (de) 1999-06-09
DE68929055D1 (de) 1999-09-16
EP0728443A3 (de) 1996-10-23
JP2885377B2 (ja) 1999-04-19
FI892282L (fi) 1989-11-12
IL90263A0 (en) 1989-12-15
EP0721765B1 (de) 1999-08-11
EP0721765A3 (de) 1996-07-31
CA1323090C (en) 1993-10-12

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8339 Ceased/non-payment of the annual fee