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GB2010484A - Ultrasonic Scanner - Google Patents

Ultrasonic Scanner

Info

Publication number
GB2010484A
GB2010484A GB7835865A GB7835865A GB2010484A GB 2010484 A GB2010484 A GB 2010484A GB 7835865 A GB7835865 A GB 7835865A GB 7835865 A GB7835865 A GB 7835865A GB 2010484 A GB2010484 A GB 2010484A
Authority
GB
United Kingdom
Prior art keywords
reflector
ultrasonic waves
ultrasonic
sector scan
scanner
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
GB7835865A
Other versions
GB2010484B (en
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.)
Second Foundation Inc
Original Assignee
Second Foundation Inc
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
Priority claimed from US05/833,244 external-priority patent/US4143554A/en
Application filed by Second Foundation Inc filed Critical Second Foundation Inc
Publication of GB2010484A publication Critical patent/GB2010484A/en
Application granted granted Critical
Publication of GB2010484B publication Critical patent/GB2010484B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
    • G10K11/355—Arcuate movement
    • 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
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

An ultrasonic scanner in which one or more ultrasonic transducers 32a traverse an arcuate path with respect to a reflector 54 which converges ultrasonic waves at a point a preselected distance in front of the reflector. In general, the ultrasonic waves are converged at a point outside the scanner and inside an object to be examined to produce a sector scan in the object having its center at the convergence point. In one embodiment the reflector only partially reflects the ultrasonic waves and an additional stationary transducer is provided which is positioned to produce ultrasonic waves which radiate through the reflector and coincide with one of the lines of the sector scan, thus permitting simultaneous M-mode or pulse Doppler echo information to be obtained in perfect registration with the sector scan lines. Attenuation and anti-reflection means are provided to suppress echo artifacts. <IMAGE>
GB7835865A 1977-09-14 1978-09-07 Ultrasonic scanner Expired GB2010484B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/833,244 US4143554A (en) 1977-03-14 1977-09-14 Ultrasonic scanner

Publications (2)

Publication Number Publication Date
GB2010484A true GB2010484A (en) 1979-06-27
GB2010484B GB2010484B (en) 1982-03-24

Family

ID=25263854

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7835865A Expired GB2010484B (en) 1977-09-14 1978-09-07 Ultrasonic scanner

Country Status (4)

Country Link
JP (1) JPS5538180A (en)
CA (1) CA1121500A (en)
DE (1) DE2839881B2 (en)
GB (1) GB2010484B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142726A (en) * 1983-06-24 1985-01-23 Atomic Energy Authority Uk Ultrasonic scanning probe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745832A (en) * 1980-08-30 1982-03-16 Aloka Co Ltd Ultrasonic probe for endoscope
CA1189936A (en) * 1981-01-15 1985-07-02 Norman S. Neidell Navigational systems using phase encoded angular coordinates
JPS57192547A (en) * 1981-05-21 1982-11-26 Olympus Optical Co Ultrasonic diagnostic apparatus for body cavity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142726A (en) * 1983-06-24 1985-01-23 Atomic Energy Authority Uk Ultrasonic scanning probe
US4577506A (en) * 1983-06-24 1986-03-25 United Kingdom Atomic Energy Authority Ultrasonic scanning probe

Also Published As

Publication number Publication date
JPS5538180A (en) 1980-03-17
DE2839881B2 (en) 1980-06-12
DE2839881A1 (en) 1979-03-29
CA1121500A (en) 1982-04-06
GB2010484B (en) 1982-03-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee