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    DOPPLER ULTRASONIC HARMONIC IMAGE PROCESSING DEVICE
    1.
    发明专利
    DOPPLER ULTRASONIC HARMONIC IMAGE PROCESSING DEVICE 失效

    公开(公告)号：JPH11342130A

    公开(公告)日：1999-12-14

    申请号：JP13411899

    申请日：1999-05-14

    Applicant: ADVANCED TECH LAB

    Inventor： CRITON ALINE LAURE ,  ROBINSON MARSHALL TAYLOR ,  LOUPAS THANASIS ,  PETERSON ROY BECK ,  PESQUE PATRICK R ,  ROUTH HELEN F

    IPC: A61B8/06 ,  A61B8/08 ,  G01S7/52 ,  G01S15/89

    Abstract: PROBLEM TO BE SOLVED: To measure and display of a specified intracorporeal region, the movement of an intracorporeal texture, or the bloodstream by providing a Doppler processor for processing a received signal including harmonics of a basic frequency. SOLUTION: A harmonic echo signal is transmitted to a Doppler processor 50 through a bus 90 or a wall filter 52. When a user desires only the processing and display of blood flow information, the wall filter 52 removes a low frequency tissue signal component from the wide band harmonic echo signal. When the user desires the image processing of a moving tissue or both the moving tissue and the bloodstream, the wall filter 52 is bypassed, and a Doppler calculation is performed by a Doppler estimating apparatus 54 by use of the harmonic signal not filtered on the bus 90. Doppler shift characteristic such as frequency (speed), Doppler power (intensity), acceleration or dispersion can be provided by the Doppler processing of the harmonic echo signal.

    Continuous display of cardiac blood flow information
    2.
    发明公开
    Continuous display of cardiac blood flow information 失效
    的血流信息连续指示

    公开(公告)号：EP0747010A3

    公开(公告)日：1998-11-11

    申请号：EP96304247

    申请日：1996-06-07

    Applicant: ADVANCED TECH LAB

    Inventor： SCHMIESING DANIEL C ,  ROUTH HELEN F ,  KINCY BRUCE A

    IPC: G01B17/00 ,  A61B8/06 ,  G01B17/06 ,  G01S7/52 ,  G01S7/62 ,  G01S15/58

    CPC classification number: G01S15/58 ,  A61B8/06 ,  G01S7/52073

    Abstract: A technique for continuously determining and displaying the peak velocities of spectral Doppler information is disclosed. A Doppler noise threshold level is determined from operating characteristics of the ultrasound system, probe, or both. Received spectral Doppler data for a spectral line is compared to this threshold to identify a valid peak velocity value. Spectral lines are examined in advance of their display to detect excursions due to artifacts such as valve clicks. Peak velocity values are interpolated and displayed in place of artifact peak values. Individual heart cycles over which quantified measures of cardiovascular performance are computed and displayed are selected by the R-wave intervals of an ECG trace. The interval of the concurrent spectral Doppler display corresponding to the heart cycle interval over which the quantified measures are computed or pertain is automatically highlighted for the user.

    5.
    发明专利
    未知

    公开(公告)号：NO992323L

    公开(公告)日：1999-11-15

    申请号：NO992323

    申请日：1999-05-12

    Applicant: ADVANCED TECH LAB

    Inventor： CRITON ALINE LAURE ,  ROBINSON MARSHALL TAYLOR ,  LOUPAS THANASIS ,  PETERSON ROY BECK ,  PESQUE PATRICK RENE ,  ROUTH HELEN F

    IPC: A61B8/06 ,  A61B8/08 ,  G01S7/52 ,  G01S15/89 ,  A61B8/14

    Abstract: An ultrasonic diagnostic imaging system and method are described by which a fundamental frequency signal is transmitted into the body and harmonic (nonlinear) echo returns are received from the transmission. The harmonic echo signals are Doppler processed and displayed. The harmonic Doppler signals may be displayed alone, or in combination with a fundamental frequency or harmonic grayscale image. In a preferred embodiment harmonic signals returned from moving tissue are segmented on an intensity or frequency basis and displayed. The inventive apparatus and method provide highly resolved ultrasonic images of moving tissue which are substantially unobscured by image clutter from structures or tissue in the near field.

    6.
    发明专利
    未知

    公开(公告)号：NO992323D0

    公开(公告)日：1999-05-12

    申请号：NO992323

    申请日：1999-05-12

    Applicant: ADVANCED TECH LAB

    Inventor： CRITON ALINE LAURE ,  ROBINSON MARSHALL TAYLOR ,  LOUPAS THANASIS ,  PETERSON ROY BECK ,  PESQUE PATRICK RENU ,  ROUTH HELEN F

    IPC: A61B8/06 ,  A61B8/08 ,  G01S7/52 ,  G01S15/89 ,  A61B

    Abstract: An ultrasonic diagnostic imaging system and method are described by which a fundamental frequency signal is transmitted into the body and harmonic (nonlinear) echo returns are received from the transmission. The harmonic echo signals are Doppler processed and displayed. The harmonic Doppler signals may be displayed alone, or in combination with a fundamental frequency or harmonic grayscale image. In a preferred embodiment harmonic signals returned from moving tissue are segmented on an intensity or frequency basis and displayed. The inventive apparatus and method provide highly resolved ultrasonic images of moving tissue which are substantially unobscured by image clutter from structures or tissue in the near field.

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