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    METHOD FOR IMAGING A VOLUME OF TISSUE
    2.
    发明申请
    METHOD FOR IMAGING A VOLUME OF TISSUE 有权
    用于成像组织体积的方法

    公开(公告)号：US20130041260A1

    公开(公告)日：2013-02-14

    申请号：US13208193

    申请日：2011-08-11

    申请人： Steven Schmidt ,  Cuiping Li ,  Olivier Roy ,  Ivana Jovanovic

    发明人： Steven Schmidt ,  Cuiping Li ,  Olivier Roy ,  Ivana Jovanovic

    IPC分类号： A61B8/00

    CPC分类号： A61B8/0825 ,  A61B8/406 ,  A61B8/4281 ,  A61B8/483 ,  A61B8/5207

    摘要： A method for imaging a volume of tissue in a scan region, including: emitting, from transmitting transducers, acoustic waveforms toward the volume of tissue; detecting, with detecting transducers, a plurality acoustic signals derived from acoustic waveforms interacting with the volume of tissue; generating from the detected acoustic signals a plurality of variable attenuation maps, in which each variable attenuation map corresponds to acoustic signals detected by a respective detecting transducer and includes a plurality of variable attenuation coefficients mapped to the scan region; modifying at least a portion of the detected acoustic signals based on one or more variable attenuation maps; and generating a reflection rendering of the volume of tissue based on the modified acoustic signals.

    摘要翻译： 一种用于对扫描区域中的组织体积进行成像的方法，包括：从发射换能器向所述组织体积发射声波; 用检测换能器检测从与组织体积相互作用的声波形得到的多个声信号; 从检测到的声学信号中产生多个可变衰减图，其中每个可变衰减映射对应于由相应检测换能器检测到的声信号，并且包括映射到扫描区域的多个可变衰减系数; 基于一个或多个可变衰减图来修改检测到的声信号的至少一部分; 以及基于经修改的声信号产生组织体积的反射呈现。

    Method for imaging a volume of tissue
    4.
    发明授权
    Method for imaging a volume of tissue 有权
    用于对体积的组织进行成像的方法

    公开(公告)号：US08663113B2

    公开(公告)日：2014-03-04

    申请号：US13208193

    申请日：2011-08-11

    申请人： Steven P Schmidt ,  Cuiping Li ,  Olivier Roy ,  Ivana Jovanovic

    发明人： Steven P Schmidt ,  Cuiping Li ,  Olivier Roy ,  Ivana Jovanovic

    IPC分类号： A61B8/00

    CPC分类号： A61B8/0825 ,  A61B8/406 ,  A61B8/4281 ,  A61B8/483 ,  A61B8/5207

    摘要： A method for imaging a volume of tissue in a scan region, including: emitting, from transmitting transducers, acoustic waveforms toward the volume of tissue; detecting, with detecting transducers, a plurality acoustic signals derived from acoustic waveforms interacting with the volume of tissue; generating from the detected acoustic signals a plurality of variable attenuation maps, in which each variable attenuation map corresponds to acoustic signals detected by a respective detecting transducer and includes a plurality of variable attenuation coefficients mapped to the scan region; modifying at least a portion of the detected acoustic signals based on one or more variable attenuation maps; and generating a reflection rendering of the volume of tissue based on the modified acoustic signals.

    摘要翻译： 一种用于对扫描区域中的组织体积进行成像的方法，包括：从发射换能器向所述组织体积发射声波; 用检测换能器检测从与组织体积相互作用的声波形得到的多个声信号; 从检测到的声学信号中产生多个可变衰减图，其中每个可变衰减映射对应于由相应检测换能器检测到的声信号，并且包括映射到扫描区域的多个可变衰减系数; 基于一个或多个可变衰减图来修改检测到的声信号的至少一部分; 以及基于经修改的声信号产生组织体积的反射呈现。

    Time of flight estimation method using beamforming for acoustic tomography
    5.
    发明授权
    Time of flight estimation method using beamforming for acoustic tomography 失效
    使用波束形成进行声学断层扫描的飞行时间估计方法

    公开(公告)号：US08574158B2

    公开(公告)日：2013-11-05

    申请号：US12502457

    申请日：2009-07-14

    申请人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

    发明人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

    IPC分类号： A61B8/00 ,  H04B1/02

    CPC分类号： G01N29/0672 ,  A61B8/15 ,  G01S15/8913

    摘要： It is disclosed an acoustic tomography method to improve the time of flight estimation, said method comprising the steps of: sequentially triggering a set of N transmitters so as to generate a sequence of N acoustic waves through a volume being scanned; receiving each of said acoustic waves after transmission through said volume with a set of M receivers, which are called received signals; delaying by varying delays the N different said received signals that each receiver receives from the N different transmitters, and adding them together to form a new received signal, which is called transmit-beamformed signal for that receiver; delaying by varying delays the M different said transmit-beamformed signals for each receiver and adding them together at each receiver to form a new signal, which we call transmit-receive-beamformed signal.

    摘要翻译： 公开了一种用于改善飞行时间估计的声学断层摄影方法，所述方法包括以下步骤：顺序地触发一组N个发射机，以便通过被扫描的体积产生N个声波的序列; 在通过所述容量传输之后接收每个所述声波，该组M个接收器称为接收信号; 通过改变延迟来延迟每个接收机从N个不同发射机接收的N个不同的所述接收信号，并将它们相加在一起以形成新的接收信号，这被称为用于该接收机的发射波束形成信号; 通过改变延迟来延迟每个接收机的M个不同的所述发送波束形成的信号，并将它们一起添加到每个接收机处以形成新的信号，这被称为发射接收波束形成的信号。

    Method for calibrating a transducer array
    6.
    发明授权
    Method for calibrating a transducer array 有权
    校准换能器阵列的方法

    公开(公告)号：US08532951B2

    公开(公告)日：2013-09-10

    申请号：US12976462

    申请日：2010-12-22

    申请人： Olivier Roy ,  Neb Duric ,  Ivana Jovanovic ,  Martin Vetterli

    发明人： Olivier Roy ,  Neb Duric ,  Ivana Jovanovic ,  Martin Vetterli

    IPC分类号： G01D18/00 ,  G01D21/00 ,  G01P21/00 ,  G01R35/00 ,  G01B3/30 ,  G01B21/00

    CPC分类号： A61B8/0825 ,  A61B8/58

    摘要： An iterative method for calibrating a transducer array characterized by calibration parameters, based on time delay measurements between transducer pairs, comprising the steps of: creating a distance data set that includes pairwise distances between estimated positions of transducer; forming a time delay measurement data set that includes time delay measurements between transducer pairs; generating from the time delay measurement data set an estimate of at least one calibration parameter; modifying the time delay measurement data set and the distance data set based on the estimated calibration parameters; denoising the modified distance data set with an iterative algorithm; updating the estimated positions of transducers based on the denoised modified distance data set; and repeating at least a portion of the steps until the difference between the estimated positions of transducer pairs and updated estimated positions of transducers satisfies a stopping criterion.

    摘要翻译： 一种迭代方法，用于校准基于校准参数的换能器阵列，其基于换能器对之间的时间延迟测量，包括以下步骤：创建包括换能器的估计位置之间成对距离的距离数据集; 形成包括传感器对之间的时间延迟测量的时间延迟测量数据集; 从所述时间延迟测量数据生成至少一个校准参数的估计; 基于估计的校准参数修改时间延迟测量数据集和距离数据集; 用迭代算法对修改的距离数据集进行去噪; 基于去噪修正距离数据集来更新换能器的估计位置; 并且重复步骤的至少一部分，直到换能器对的估计位置和更新的换能器估计位置之间的差满足停止标准。

    TIME OF FLIGHT ESTIMATION METHOD USING BEAMFORMING FOR ACOUSTIC TOMOGRAPHY
    7.
    发明申请
    TIME OF FLIGHT ESTIMATION METHOD USING BEAMFORMING FOR ACOUSTIC TOMOGRAPHY 失效
    飞行时间估计方法使用射束进行声学测量

    公开(公告)号：US20100010351A1

    公开(公告)日：2010-01-14

    申请号：US12502457

    申请日：2009-07-14

    申请人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

    发明人： Ivana Jovanovic ,  Ali Hormati ,  Oliver Roy ,  Martin Vetterli

    IPC分类号： A61B8/14

    CPC分类号： G01N29/0672 ,  A61B8/15 ,  G01S15/8913

    摘要： It is disclosed an acoustic tomography method to improve the time of flight estimation, said method comprising the steps of: sequentially triggering a set of N transmitters so as to generate a sequence of N acoustic waves through a volume being scanned; receiving each of said acoustic waves after transmission through said volume with a set of M receivers, which are called received signals; delaying by varying delays the N different said received signals that each receiver receives from the N different transmitters, and adding them together to form a new received signal, which is called transmit-beamformed signal for that receiver; delaying by varying delays the M different said transmit-beamformed signals for each receiver and adding them together at each receiver to form a new signal, which we call transmit-receive-beamformed signal.

    摘要翻译： 公开了一种用于改善飞行时间估计的声学断层摄影方法，所述方法包括以下步骤：顺序地触发一组N个发射机，以便通过被扫描的体积产生N个声波的序列; 在通过所述容量传输之后接收每个所述声波，该组M个接收器称为接收信号; 通过改变延迟来延迟每个接收机从N个不同发射机接收的N个不同的所述接收信号，并将它们相加在一起以形成新的接收信号，这被称为用于该接收机的发射波束形成信号; 通过改变延迟来延迟每个接收机的M个不同的所述发送波束形成的信号，并将它们一起添加到每个接收机处以形成新的信号，这被称为发射接收波束形成的信号。

    METHOD FOR CALIBRATING A TRANSDUCER ARRAY
    9.
    发明申请
    METHOD FOR CALIBRATING A TRANSDUCER ARRAY 有权
    校准传感器阵列的方法

    公开(公告)号：US20110146371A1

    公开(公告)日：2011-06-23

    申请号：US12976462

    申请日：2010-12-22

    申请人： Olivier Roy ,  Neb Duric ,  Ivana Jovanovic ,  Martin Vetterli

    发明人： Olivier Roy ,  Neb Duric ,  Ivana Jovanovic ,  Martin Vetterli

    IPC分类号： G01P21/00

    CPC分类号： A61B8/0825 ,  A61B8/58

    摘要： An iterative method for calibrating a transducer array characterized by calibration parameters, based on time delay measurements between transducer pairs, comprising the steps of: creating a distance data set that includes pairwise distances between estimated positions of transducer; forming a time delay measurement data set that includes time delay measurements between transducer pairs; generating from the time delay measurement data set an estimate of at least one calibration parameter; modifying the time delay measurement data set and the distance data set based on the estimated calibration parameters; denoising the modified distance data set with an iterative algorithm; updating the estimated positions of transducers based on the denoised modified distance data set; and repeating at least a portion of the steps until the difference between the estimated positions of transducer pairs and updated estimated positions of transducers satisfies a stopping criterion.

    摘要翻译： 一种迭代方法，用于校准基于校准参数的换能器阵列，其基于换能器对之间的时间延迟测量，包括以下步骤：创建包括换能器的估计位置之间成对距离的距离数据集; 形成包括传感器对之间的时间延迟测量的时间延迟测量数据集; 从所述时间延迟测量数据生成至少一个校准参数的估计; 基于估计的校准参数修改时间延迟测量数据集和距离数据集; 用迭代算法对修改的距离数据集进行去噪; 基于去噪修正距离数据集来更新换能器的估计位置; 并且重复步骤的至少一部分，直到换能器对的估计位置和更新的换能器估计位置之间的差满足停止标准。