CA998161A - Method and apparatus for reducing the lateral maxima in ultrasonic echosounding methods - Google Patents

Method and apparatus for reducing the lateral maxima in ultrasonic echosounding methods

Info

Publication number
CA998161A
CA998161A CA186,334A CA186334A CA998161A CA 998161 A CA998161 A CA 998161A CA 186334 A CA186334 A CA 186334A CA 998161 A CA998161 A CA 998161A
Authority
CA
Canada
Prior art keywords
echosounding
ultrasonic
reducing
methods
lateral maxima
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
CA186,334A
Other languages
English (en)
Other versions
CA186334S (en
Inventor
Christoph B. Burckhardt
Pierre-Andre Grandchamp
Heinz Hoffmann
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Application granted granted Critical
Publication of CA998161A publication Critical patent/CA998161A/en
Expired 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52046—Techniques for image enhancement involving transmitter or receiver
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/346—Circuits therefor using phase variation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
    • A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Transducers For Ultrasonic Waves (AREA)
CA186,334A 1972-11-27 1973-11-21 Method and apparatus for reducing the lateral maxima in ultrasonic echosounding methods Expired CA998161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1722272A CH558944A (de) 1972-11-27 1972-11-27 Verfahren und vorrichtung zur verringerung der seitenmaxima bei ultraschall-echolotverfahren.

Publications (1)

Publication Number Publication Date
CA998161A true CA998161A (en) 1976-10-05

Family

ID=4423717

Family Applications (1)

Application Number Title Priority Date Filing Date
CA186,334A Expired CA998161A (en) 1972-11-27 1973-11-21 Method and apparatus for reducing the lateral maxima in ultrasonic echosounding methods

Country Status (9)

Country Link
JP (1) JPS537815B2 (US06623731-20030923-C00052.png)
CA (1) CA998161A (US06623731-20030923-C00052.png)
CH (1) CH558944A (US06623731-20030923-C00052.png)
DD (1) DD109267A5 (US06623731-20030923-C00052.png)
DE (1) DE2351352C3 (US06623731-20030923-C00052.png)
DK (1) DK138863B (US06623731-20030923-C00052.png)
FR (1) FR2208122B1 (US06623731-20030923-C00052.png)
GB (1) GB1413740A (US06623731-20030923-C00052.png)
NL (1) NL161585C (US06623731-20030923-C00052.png)

Also Published As

Publication number Publication date
JPS501767A (US06623731-20030923-C00052.png) 1975-01-09
GB1413740A (en) 1975-11-12
NL161585C (nl) 1980-02-15
JPS537815B2 (US06623731-20030923-C00052.png) 1978-03-22
DE2351352C3 (de) 1978-12-07
DK138863C (US06623731-20030923-C00052.png) 1979-04-17
DE2351352A1 (de) 1974-05-30
CH558944A (de) 1975-02-14
NL161585B (nl) 1979-09-17
DK138863B (da) 1978-11-06
NL7316000A (US06623731-20030923-C00052.png) 1974-05-29
FR2208122A1 (US06623731-20030923-C00052.png) 1974-06-21
DD109267A5 (US06623731-20030923-C00052.png) 1974-10-20
FR2208122B1 (US06623731-20030923-C00052.png) 1978-03-10
DE2351352B2 (de) 1978-04-13

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