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公开(公告)号：EP0713680B1
公开(公告)日：2003-03-05
申请号：EP95308391.2
申请日：1995-11-22
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC.
Inventor： Johnson, Keith W. , Powers, Jeffry E.
IPC: A61B8/00
CPC classification number: A61B8/481 , G01S7/52041 , G01S7/52049
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2.发明公开Ultrasonic doppler flow measurement system with tissue motion discrimination 失效Ultraschall-Doppler-Durchflussmesser mit Diskriminier der Gewebebewegung。
公开(公告)号：EP0481691A1
公开(公告)日：1992-04-22
申请号：EP91309373.8
申请日：1991-10-11
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC.
Inventor： Peterson, Roy Beck , Powers, Jeffry E.
CPC classification number: A61B8/06 , G01F1/663 , G01P5/241 , G01S15/52 , G01S15/582 , G01S15/8981
Abstract: An ultrasonic diagnostic system for measuring fluid flow velocities through Doppler techniques is provided which eliminates the effects of tissue motion from fluid flow velocity information. Doppler information signals are discriminated to determine the presence of signal components resulting from moving tissue, which signal components are located at frequencies of a Doppler spectrum other than the predetermined frequency location of stationary tissue signals. The tissue motion signal components present are shifted to the predetermined frequency location and removed by high pass filtering the Doppler signals. The remaining signals are then shifted back to their original frequency location and transmitted to a Doppler velocity estimator for further processing of the fluid flow velocity information and ultimate display of the information. To overcome problems of Doppler frequency inaccuracies at discrete spatial positions, the Doppler signals from a plurality of neighbouring spatial locations are examined in the aggregate to determine the frequency location of tissue motion signal components.
Abstract translation: 提供了一种用于通过多普勒技术测量流体流速的超声波诊断系统，其消除了来自流体流速信息的组织运动的影响。 鉴别多普勒信息信号以确定由移动组织产生的信号分量的存在，该信号分量位于除了静止组织信号的预定频率位置之外的多普勒频谱的频率处。 存在的组织运动信号分量被移动到预定的频率位置，并通过高通滤波多普勒信号去除。 然后将剩余的信号移回到它们的原始频率位置，并传输到多普勒速度估计器，以进一步处理流体流速信息和信息的最终显示。 为了克服离散空间位置处的多普勒频率不准确的问题，从多个相邻空间位置的多普勒信号被集中检查以确定组织运动信号分量的频率位置。
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公开(公告)号：EP0453251A1
公开(公告)日：1991-10-23
申请号：EP91303404.7
申请日：1991-04-17
Applicant: Advanced Technology Laboratories, Inc.
Inventor： Powers, Jeffry E.
CPC classification number: A61B8/0841 , A61B8/0833 , A61B17/3403 , A61B2017/22075 , A61B2017/3413 , A61B2090/3929
Abstract: A system for imaging a biopsy needle with ultrasound is shown in which the needle tip elicits a Doppler response through controlled reciprocation of the needle tip. In a preferred embodiment the biopsy needle includes a hollow cannula (40) which carries a removable stylet. Means for reciprocating (44) the stylet is coupled to the proximal end of the stylet, and the distal tip of the stylet is reciprocated at the distal end of the cannula. This motion is detected through Doppler interrogation of the body region at which the biopsy is to be performed, and the Doppler response of the needle tip in the image of the body region allows the needle tip to be monitored as it approaches the tissue to be biopsied.
Abstract translation: 示出了用于使用超声波成像活检针的系统，其中针尖通过针尖的受控往复运动引起多普勒响应。 在优选实施例中，活检针包括携带可移除探针的中空套管（40）。 用于往复运动的装置（44）探针联接到探针的近端，探针的远端在套管的远端处往复运动。 通过进行活组织检查的身体区域的多普勒询问来检测该运动，并且针尖在身体区域的图像中的多普勒反应允许针尖在接近要组织的组织时被监测 。
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公开(公告)号：EP0212090B1
公开(公告)日：1991-01-09
申请号：EP86107241.1
申请日：1986-05-28
Applicant: Advanced Technology Laboratories, Inc.
Inventor： DesJardins, Philip A. , Powers, Jeffry E.
IPC: A61B8/06
CPC classification number: A61B8/06
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5.发明授权Ultrasonic pulsed Doppler flow measurement system with two dimensional autocorrelation processing 失效超声系统用于使用具有二维自相关处理的脉冲多普勒效应测量流量
公开(公告)号：EP0650036B1
公开(公告)日：2004-01-21
申请号：EP94307502.8
申请日：1994-10-13
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC. , THE COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATION
Inventor： Powers, Jeffry E. , Loupas, Thanasis
CPC classification number: G01S15/8979 , G01S7/52034 , G01S7/52071 , G01S15/52 , G01S15/582
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Patent Agency Ranking6.发明授权
公开(公告)号：EP0481691B1
公开(公告)日：1996-04-10
申请号：EP91309373.8
申请日：1991-10-11
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC.
Inventor： Peterson, Roy Beck , Powers, Jeffry E.
CPC classification number: A61B8/06 , G01F1/663 , G01P5/241 , G01S15/52 , G01S15/582 , G01S15/8981
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7.发明公开Ultrasonic pulsed Doppler flow measurement system with two dimensional autocorrelation processing 失效超声系统用于使用具有二维自相关处理的脉冲多普勒效应测量流量。
公开(公告)号：EP0650036A3
公开(公告)日：1996-01-31
申请号：EP94307502.8
申请日：1994-10-13
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC.
Inventor： Powers, Jeffry E. , Loupas, Thanasis
CPC classification number: G01S15/8979 , G01S7/52034 , G01S7/52071 , G01S15/52 , G01S15/582
Abstract: A velocity estimation technique is provided for a pulse-echo ultrasonic diagnostic system in which a two dimensional array of samples is acquired from a sample volume. The two dimensions of the array are depth, in which echo signal samples are acquired in response to transmission of a pulse to the sample volume, and pulse time, in which samples are acquired in response to transmission of the pulses in the pulse ensemble to the sample volume. Two autocorrelation calculations are performed on the array, one in the depth dimension and another in the pulse time dimension to yield two correlation functions, the first related to echo frequency and the second related to the Doppler frequency. The two correlation functions are then employed in a Doppler velocity estimation to determine the velocity of motion at the sample volume. The technique utilizes the full information content present in the bandwidth of the received echo signals, thereby overcoming inaccuracies due to depth dependent frequency decline or coherent signal cancellation. Since accuracy is premised upon the number of samples in the array and not its size in a particular dimension, performance can be tailored to favor frame rate or axial resolution while maintaining the accuracy of velocity estimation.
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公开(公告)号：EP0453251B1
公开(公告)日：1997-08-20
申请号：EP91303404.7
申请日：1991-04-17
Applicant: Advanced Technology Laboratories, Inc.
Inventor： Powers, Jeffry E.
CPC classification number: A61B8/0841 , A61B8/0833 , A61B17/3403 , A61B2017/22075 , A61B2017/3413 , A61B2090/3929
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公开(公告)号：EP0713680A2
公开(公告)日：1996-05-29
申请号：EP95308391.2
申请日：1995-11-22
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC.
Inventor： Johnson, Keith W. , Powers, Jeffry E.
IPC: A61B8/00
CPC classification number: A61B8/481 , G01S7/52041 , G01S7/52049
Abstract: An ultrasonic diagnostic system is provided which detects the presence of coated microbubble contrast agents in the body of a patient by transmitting ultrasonic energy which causes the destruction of the coated microbubbles and detects the microbubble destruction through phase insensitive detection and differentiation of echoes received from two consecutive ultrasonic transmissions. The destruction of a microbubble can also be used as a point source of acoustic energy for aberration correction, whereby the timing of the beamformer is adjusted from an analysis of beamformer signals resulting from a detected microbubble destruction event.
Abstract translation: 用于通过超声波询问来检测患者体内涂覆的微泡造影剂的存在的方法包括以足以引起涂覆的微气泡的破坏的能量水平将超声波脉冲传输到患者体内。 接收每个脉冲传输后返回的信号，并通过相位不敏感检测进行检测。 在两个脉冲传输之后接收到的检测信号在空间上是有区别的，并且超过预定阈值的信号差异被识别为由微泡破坏事件导致的。 差异化包括从在较早的脉冲传输之后在空间基础上接收的信号中减去稍后脉冲传输之后接收的信号，并且从被询问的场中的相同位置接收每个相减对的信号。
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10.发明公开Ultrasonic pulsed Doppler flow measurement system with two dimensional autocorrelation processing 失效超声系统用于使用具有二维自相关处理的脉冲多普勒效应测量流量。
公开(公告)号：EP0650036A2
公开(公告)日：1995-04-26
申请号：EP94307502.8
申请日：1994-10-13
Applicant: ADVANCED TECHNOLOGY LABORATORIES, INC.
Inventor： Powers, Jeffry E. , Loupas, Thanasis
CPC classification number: G01S15/8979 , G01S7/52034 , G01S7/52071 , G01S15/52 , G01S15/582
Abstract: A velocity estimation technique is provided for a pulse-echo ultrasonic diagnostic system in which a two dimensional array of samples is acquired from a sample volume. The two dimensions of the array are depth, in which echo signal samples are acquired in response to transmission of a pulse to the sample volume, and pulse time, in which samples are acquired in response to transmission of the pulses in the pulse ensemble to the sample volume. Two autocorrelation calculations are performed on the array, one in the depth dimension and another in the pulse time dimension to yield two correlation functions, the first related to echo frequency and the second related to the Doppler frequency. The two correlation functions are then employed in a Doppler velocity estimation to determine the velocity of motion at the sample volume. The technique utilizes the full information content present in the bandwidth of the received echo signals, thereby overcoming inaccuracies due to depth dependent frequency decline or coherent signal cancellation. Since accuracy is premised upon the number of samples in the array and not its size in a particular dimension, performance can be tailored to favor frame rate or axial resolution while maintaining the accuracy of velocity estimation.
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