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1.发明授权Ultrasonic diagnostic imaging system with doppler assisted tracking of tissue motion 失效超声成像系统的组织运动的多普勒跟踪
公开(公告)号：EP0880937B1
公开(公告)日：2002-09-04
申请号：EP98304234.2
申请日：1998-05-28
CPC分类号： A61B8/486 , A61B5/489 , A61B8/488 , G01S7/52036 , G01S7/52073 , G01S15/8979
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2.发明公开Ultrasonic diagnostic imaging system with doppler assisted tracking of tissue motion 失效Ultraschall-Bildaufnahmesystem mit Doppler Verfolgung der Gewebebewegung
公开(公告)号：EP0880937A2
公开(公告)日：1998-12-02
申请号：EP98304234.2
申请日：1998-05-28
CPC分类号： A61B8/486 , A61B5/489 , A61B8/488 , G01S7/52036 , G01S7/52073 , G01S15/8979
摘要： A method and apparatus are presented for tracing the border of tissue through temporally acquired scanlines comprising the steps of reducing noise in the scanlines, producing a map of tissue edges from the scanlines, denoting a tissue border to be traced, and using velocity information corresponding to tissue edges to trace the denoted border.
摘要翻译： 该方法包括识别与移动组织相对应的特定超声波图像线的特征。 然后，计算图像线的速度。 基于计算的速度，评估其他图像线的特性。
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3.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
CPC分类号： G01S15/8979 , G01S7/52034 , G01S7/52071 , G01S15/52 , G01S15/582
摘要： 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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4.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
申请人： ADVANCED TECHNOLOGY LABORATORIES, INC. , THE COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATION
CPC分类号： G01S15/8979 , G01S7/52034 , G01S7/52071 , G01S15/52 , G01S15/582
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5.发明公开Ultrasonic diagnostic imaging system with doppler assisted tracking of tissue motion 失效超声成像系统的组织运动的多普勒跟踪
公开(公告)号：EP0880937A3
公开(公告)日：1999-06-09
申请号：EP98304234.2
申请日：1998-05-28
CPC分类号： A61B8/486 , A61B5/489 , A61B8/488 , G01S7/52036 , G01S7/52073 , G01S15/8979
摘要： A method and apparatus are presented for tracing the border of tissue through temporally acquired scanlines comprising the steps of reducing noise in the scanlines, producing a map of tissue edges from the scanlines, denoting a tissue border to be traced, and using velocity information corresponding to tissue edges to trace the denoted border.
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6.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
CPC分类号： G01S15/8979 , G01S7/52034 , G01S7/52071 , G01S15/52 , G01S15/582
摘要： 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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