公开(公告)号：US20140073924A1

公开(公告)日：2014-03-13

申请号：US14078078

申请日：2013-11-12

Applicant: Boston Scientific SciMed, Inc.

Inventor： Anming He Cai

IPC: A61B8/00 ,  A61B8/06 ,  A61B8/12 ,  A61B8/08

CPC classification number: A61B8/488 ,  A61B8/06 ,  A61B8/12 ,  A61B8/13 ,  A61B8/445 ,  A61B8/4461 ,  A61B8/463 ,  A61B8/464 ,  A61B8/5207 ,  A61B8/5246 ,  A61B8/5276

Abstract: A method for generating a composite image using an intravascular imaging device includes receiving reflected echo signals from at least one transducer along a first of a plurality of radial scan lines. The received echo signals are passed through a plurality of signal processing channels to form a plurality of filtered signals. The filtered signals include a high-resolution tissue structure signal and at least one first pre-blood-flow-mask signal. High-resolution tissue structure signals are processed to form a high-resolution tissue structural image. First pre-blood-flow-mask signals are cross-correlated with second pre-blood-flow-mask signals from an adjacent radial scan line to form blood-flow-mask signals. Blood-flow-mask signals are processed to form a blood-flow mask. For each pixel of the composite image, it is determined whether to use a corresponding pixel of the high-resolution tissue structural image or a corresponding pixel of the cross-correlated blood flow mask to generate the composite image pixel.

Abstract translation: 使用血管内成像装置产生合成图像的方法包括沿着多个径向扫描线中的第一个从至少一个换能器接收反射回波信号。 所接收的回波信号通过多个信号处理通道以形成多个滤波信号。 经滤波的信号包括高分辨率组织结构信号和至少一个第一前血流量屏蔽信号。 处理高分辨率组织结构信号以形成高分辨率组织结构图像。 第一个前血流量屏蔽信号与来自相邻的放射线扫描线的第二个前血流量屏蔽信号互相关，以形成血流屏蔽信号。 处理血液流通屏蔽信号以形成血流掩模。 对于合成图像的每个像素，确定是否使用高分辨率组织结构图像的相应像素或交叉相关血流掩模的对应像素来生成合成图像像素。

公开(公告)号：US10561401B2

公开(公告)日：2020-02-18

申请号：US14483998

申请日：2014-09-11

Applicant: Boston Scientific SciMed, Inc.

Inventor： Anming He Cai ,  Wenguang Li ,  Lewis Jones Thomas, III

IPC: A61B8/00 ,  A61B8/12 ,  A61B8/08

Abstract: A method for real-time displaying of cross-sectional images during an intravascular ultrasound (IVUS) imaging procedure includes, during an intravascular ultrasound imaging procedure, receiving electrical signals from at least one transducer in a catheter as the at least one transducer rotates and moves longitudinally along a lumen of a patient blood vessel; during the intravascular ultrasound imaging procedure, processing the received electrical signals to form a series of cross-sectional images that are longitudinally-offset from one another along a length of the lumen; during the intravascular ultrasound imaging procedure, concurrently displaying i) a most recent image and ii) a previous image that is either a) selected by the operator or b) automatically selected as having a maximum or minimum of a selected image characteristic; and, during the intravascular ultrasound imaging procedure, updating the display of the most recent image as a new image from the series of cross-sectional images is processed.

公开(公告)号：US20150150540A1

公开(公告)日：2015-06-04

申请号：US14622333

申请日：2015-02-13

Applicant: Boston Scientific SciMed, Inc.

Inventor： Anming He Cai

IPC: A61B8/08 ,  A61B8/12 ,  A61B8/00

CPC classification number: A61B8/5269 ,  A61B8/12 ,  A61B8/445 ,  A61B8/4461 ,  A61B8/5207

Abstract: A method for generating an ultrasound image includes receiving an image frame comprising consecutive ultrasound scan lines obtained using a rotating ultrasound imaging arrangement and determining at least a first cross-correlation value and a second cross-correlation value for each of a plurality of the scan lines. For each individual scan line of the plurality of scan lines, the first cross-correlation value comprises a cross-correlation coefficient between a first subframe comprising a plurality of consecutive scan lines including the individual scan line and a second subframe comprising a plurality of scan lines shifted from the first subframe by a first integer value. The second correlation value comprising a cross-correlation coefficient between the first subframe and a third subframe comprising a plurality scan lines shifted from the first subframe by a second integer value that is different from the first integer value. The method further includes evaluating, individually for multiple scan lines of the plurality of scan lines, whether the scan line being evaluated exhibits non-uniform rotation distortion using at least one of the first and second correlation values for the scan line being evaluated. A correction for non-uniform rotation distortion is applied using at least one of the first and second correlation values for at least one of the plurality of scan lines. An ultrasound image is generated using at least the plurality of scan lines with the applied correction and the ultrasound image is displayed.

Abstract translation: 一种用于产生超声波图像的方法包括接收包括使用旋转超声成像装置获得的连续超声波扫描线的图像帧，并且确定多条扫描线中的每条扫描线的至少第一互相关值和第二互相关值 。 对于多条扫描线中的每条扫描线，第一互相关值包括包括多条连续扫描线的第一子帧之间的互相关系数，包括单独扫描线和包括多条扫描线的第二子帧 从第一子帧移位第一整数值。 第二相关值包括第一子帧和第三子帧之间的互相关系数，包括从第一子帧移位与第一整数值不同的第二整数值的多个扫描线。 所述方法还包括分别针对所述多条扫描线的多条扫描线，评估所述扫描线的第一和第二相关值中的至少一个，来评估被评估的扫描线是否表现出不均匀的旋转失真。 对于多个扫描线中的至少一个使用第一和第二相关值中的至少一个来应用非均匀旋转失真的校正。 使用所施加的校正的至少多个扫描线来生成超声波图像，并且显示超声波图像。

公开(公告)号：US20140249423A1

公开(公告)日：2014-09-04

申请号：US14193574

申请日：2014-02-28

Applicant: Boston Scientific SciMed, Inc.

Inventor： Anming He Cai ,  Wenguang Li ,  Shashidhar Sathyanarayana ,  Lewis Jones Thomas, III

IPC: A61B8/08 ,  A61B8/12

CPC classification number: A61B8/5223 ,  A61B8/0891 ,  A61B8/12 ,  G06T7/0012 ,  G06T7/215 ,  G06T2207/10016 ,  G06T2207/10136 ,  G06T2207/20076 ,  G06T2207/20104 ,  G06T2207/30101 ,  G06T2207/30104

Abstract: A method for processing a sequence of ultrasound frames for display includes receiving a sequence of intravascular ultrasound (IVUS) frames of a vessel having a lumen, the sequence including a first frame and a second frame; determining one or more texture features for each of one or more regions of the first frame; determining at least one flow feature for each of the one or more regions by comparing the first and second frames; deriving a lumen border for the first frame using the one or more texture features and the at least one flow feature to characterize the one or more regions as within or outside of the lumen of the vessel; and displaying an ultrasound image of the first frame with the lumen border.

Abstract translation: 用于处理用于显示的超声波帧序列的方法包括：接收具有内腔的血管的血管内超声（IVUS）帧序列，所述序列包括第一帧和第二帧; 确定所述第一帧的一个或多个区域中的每一个的一个或多个纹理特征; 通过比较所述第一和第二帧来确定所述一个或多个区域中的每一个的至少一个流特征; 使用所述一个或多个纹理特征和所述至少一个流动特征来导出所述第一框架的管腔边界以将所述一个或多个区域表征为在所述容器的内腔内或外部; 以及显示具有所述管腔边界的所述第一帧的超声图像。

公开(公告)号：US20140243679A1

公开(公告)日：2014-08-28

申请号：US14192205

申请日：2014-02-27

Applicant: Boston Scientific SciMed, Inc.

Inventor： Lewis Jones Thomas, III ,  Wenguang Li ,  Anming He Cai

IPC: A61B8/00

CPC classification number: A61B8/4483 ,  A61B8/12 ,  A61B8/445 ,  G01S7/52077 ,  G01S15/8915 ,  G01S15/8927 ,  G01S15/8956 ,  G01S15/8997

Abstract: A medical imaging assembly includes an elongated catheter having a connector at the proximal end; an array of transducers on the distal end of the catheter; conductors electrically coupled to the array of transducers and in electrical communication with the connector of the catheter; and a control unit coupleable to the catheter to send and receive electrical signals between the control unit and the array of transducers through the connector of the catheter. The control unit has a processor to execute instructions including 1) selecting a first subset of M transmitting transducers and a second subset of N receiving transducers from the array of transducers, where N>M; and 2) for each of at least N transmit/receive cycles, a) directing the first subset of M transmitting transducers to transmit an acoustic signal; and b) directing the second subset of N receiving transducers to receive corresponding echo signals.

Abstract translation: 医疗成像组件包括在近端具有连接器的细长导管; 在导管的远端上的一组换能器; 导体，电耦合到换能器阵列并与导管的连接器电连通; 以及控制单元，其可耦合到导管，以通过导管的连接器在控制单元和换能器阵列之间发送和接收电信号。 所述控制单元具有执行指令的处理器，所述指令包括1）从所述传感器阵列中选择M个发射换能器的第一子集和N个接收换能器的第二子集，其中N> M; 和2）对于至少N个发射/接收周期中的每一个，a）引导M个发射换能器的第一子集发射声信号; 以及b）指示N个接收换能器的第二子集接收相应的回波信号。