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.

公开(公告)号：NO992323A

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

CPC classification number: G01S15/8979 ,  A61B8/488 ,  G01S7/52038 ,  G01S7/52069 ,  G01S7/52071 ,  G01S15/8993

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.

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.