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1. WO2000040997 - METHOD AND APPARATUS FOR COHERENCE IMAGING

Publication Number WO/2000/040997
Publication Date 13.07.2000
International Application No. PCT/US1999/029058
International Filing Date 07.12.1999
IPC
A61B 8/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
G01S 7/52 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
52of systems according to group G01S15/58
G01S 7/527 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
52of systems according to group G01S15/58
523Details of pulse systems
526Receivers
527Extracting wanted echo signals
G01S 15/89 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
15Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
88Sonar systems specially adapted for specific applications
89for mapping or imaging
CPC
A61B 8/08
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
08Detecting organic movements or changes, e.g. tumours, cysts, swellings
G01N 2291/044
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
04Wave modes and trajectories
044Internal reflections (echoes), e.g. on walls or defects
G01S 7/52026
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
52of systems according to group G01S15/00
52017particularly adapted to short-range imaging
52023Details of receivers
52025for pulse systems
52026Extracting wanted echo signals
G01S 7/52046
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
52of systems according to group G01S15/00
52017particularly adapted to short-range imaging
52046Techniques for image enhancement involving transmitter or receiver
G01S 7/52077
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
52of systems according to group G01S15/00
52017particularly adapted to short-range imaging
52077with means for elimination of unwanted signals, e.g. noise or interference
G03B 42/06
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
42Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
06using ultrasonic, sonic or infrasonic waves
Applicants
  • GENERAL ELECTRIC COMPANY [US/US]; 1 River Road Schenectady, NY 12345, US
Inventors
  • HALL, Anne, Lindsey; US
  • THOMENIUS, Kai, E.; US
  • THOMAS, Lewis, Jones, III; JP
  • RIGBY, Kenneth, Wayne; US
Agents
  • STECKLER, Henry, I. ; General Electric Company 3135 Easton Turnpike W3C Fairfield, CT 06431, US
Priority Data
09/223,95131.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR COHERENCE IMAGING
(FR) PROCEDE ET APPAREIL D'IMAGERIE DE COHERENCE
Abstract
(EN)
A method and an apparatus for adaptively suppressing incoherent data in a coherent imaging system. A focused ultrasound beam is transmitted with conventional transmit beamforming time delays. The returning echo signals are processed along two separate receive signal processing paths. The time delays along one processing path are set for traditional coherent receive beamforming, while the time delays along the other processing path are set to apply incoherent summing to the same set of return signals (e.g., time delays equal to zero). Then at each point in the receive beam or vector, the coherent and incoherent summation signals are compared. If the coherent and incoherent summation signals are of like amplitude, the beamformed signal of the first processing path is deemed incoherent, and its display is suppressed in the final image.
(FR)
L'invention concerne un procédé et un appareil permettant de supprimer de manière adaptative des données incohérentes dans un système d'imagerie cohérent. Un faisceau ultrasonore focalisé est émis avec des retards de mise en forme de faisceaux d'émission classiques. Les signaux de retour d'écho sont traités suivant deux trajets de traitement de signaux de réception. Les retards sur un trajet de traitement sont établis pour la mise en forme de faisceaux de réception cohérents classiques, les retards sur l'autre trajet de traitement étant destinés à appliquer une sommation incohérente au même jeu de signaux de retour (par exemple, des retards nuls). A chaque point du faisceau ou vecteur, on compare alors les signaux de sommation cohérente et incohérente. S'ils présentent la même amplitude, le signal à faisceaux mis en forme du premier trajet de traitement est jugé incohérent et son affichage est supprimé de l'image finale.
Also published as
ININ/PCT/2000/216/KOL
NO20004317
Latest bibliographic data on file with the International Bureau