GB2137752A - Ultrasonic imaging system with cross correlation - Google Patents

Ultrasonic imaging system with cross correlation

Info

Publication number
GB2137752A
GB2137752A GB08412805A GB8412805A GB2137752A GB 2137752 A GB2137752 A GB 2137752A GB 08412805 A GB08412805 A GB 08412805A GB 8412805 A GB8412805 A GB 8412805A GB 2137752 A GB2137752 A GB 2137752A
Authority
GB
United Kingdom
Prior art keywords
signal
delay
ultrasonic signals
array
imaging system
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.)
Pending
Application number
GB08412805A
Other versions
GB8412805D0 (en
Inventor
Philip Shepard Green
James Fred Havlice
John Franklin Holzemer
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.)
SRI International Inc
Original Assignee
SRI International Inc
Stanford Research Institute
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 SRI International Inc, Stanford Research Institute filed Critical SRI International Inc
Publication of GB8412805D0 publication Critical patent/GB8412805D0/en
Publication of GB2137752A publication Critical patent/GB2137752A/en
Pending 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
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
    • G01S15/8922—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array the array being concentric or annular
    • 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
    • G01S7/52023—Details of receivers
    • G01S7/52025—Details of receivers for pulse systems
    • G01S7/52026—Extracting wanted echo signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

An ultrasonic imaging system (11) for soft tissue includes an array (13) of transducer elements (15-1 through 15-21) for receiving ultrasonic signals reflected from within the medium being examined. A plurality of signal delay lines (22-1 through 22-21) are connected to receive the ultrasonic signals from each of the transducer elements (15-1 through 15-21) of the array (13). A correlation processor (26) is also connected to receive the ultrasonic signals from each transducer element (15-1 through 15-21) in the array (13) for determining differences in delay for each signal from inhomogeneities within the tissue, either through use of a plurality of cross-correlation values for each signal or by identifying a peak amplitude for each signal and comparing a temporal position of the peak amplitudes for each signal, and for adjusting a length of delay of at least one of the plurality of delay lines (22-1 through 22-21) based on the delay differences. As a result of the adjustment, the ultrasonic signals are provided as substantially in phase outputs from each of the plurality of delay lines (22 through 22-21).
GB08412805A 1982-09-29 1983-09-22 Ultrasonic imaging system with cross correlation Pending GB2137752A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42769482A 1982-09-29 1982-09-29
PCT/US1983/001469 WO1984001435A1 (en) 1982-09-29 1983-09-22 Ultrasonic imaging system with cross correlation

Publications (2)

Publication Number Publication Date
GB8412805D0 GB8412805D0 (en) 1984-06-27
GB2137752A true GB2137752A (en) 1984-10-10

Family

ID=23695878

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08412805A Pending GB2137752A (en) 1982-09-29 1983-09-22 Ultrasonic imaging system with cross correlation

Country Status (7)

Country Link
EP (1) EP0120074A1 (en)
JP (1) JPS59501760A (en)
DE (1) DE3390245T1 (en)
GB (1) GB2137752A (en)
IT (1) IT1168792B (en)
NL (1) NL8320317A (en)
WO (1) WO1984001435A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700573A (en) * 1986-03-07 1987-10-20 Hewlett-Packard Company Method to improve accuracy in delay lines
JP2704877B2 (en) * 1988-03-07 1998-01-26 株式会社日立メディコ Ultrasound diagnostic equipment
JPH02177949A (en) * 1988-12-28 1990-07-11 Shimadzu Corp Ultrasonic diagnostic device
JPH0595951A (en) * 1991-03-08 1993-04-20 Fujitsu Ltd Ultrasonic imaging device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561430A (en) * 1967-07-20 1971-02-09 William W Filler Jr Fetal heartbeat rate instrument for monitoring fetal distress
US3942150A (en) * 1974-08-12 1976-03-02 The United States Of America As Represented By The Secretary Of The Navy Correction of spatial non-uniformities in sonar, radar, and holographic acoustic imaging systems
US4317369A (en) * 1978-09-15 1982-03-02 University Of Utah Ultrasound imaging apparatus and method
US4397006A (en) * 1980-12-31 1983-08-02 Mobil Oil Corporation Cross trace coherent noise filtering for seismograms
US4395909A (en) * 1981-02-23 1983-08-02 Imaging Associates Body imaging technique

Also Published As

Publication number Publication date
GB8412805D0 (en) 1984-06-27
IT8349072A0 (en) 1983-09-29
EP0120074A1 (en) 1984-10-03
DE3390245T1 (en) 1984-11-29
JPS59501760A (en) 1984-10-18
IT1168792B (en) 1987-05-20
NL8320317A (en) 1984-08-01
WO1984001435A1 (en) 1984-04-12

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