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    METHODS FOR ASSESSING A VESSEL WITH SEQUENTIAL PHYSIOLOGICAL MEASUREMENTS
    1.
    发明公开
    METHODS FOR ASSESSING A VESSEL WITH SEQUENTIAL PHYSIOLOGICAL MEASUREMENTS 审中-公开

    公开(公告)号：EP4070720A1

    公开(公告)日：2022-10-12

    申请号：EP22165311.6

    申请日：2019-02-22

    申请人： Boston Scientific Scimed, Inc.

    发明人： LI, Wenguang ,  LI, Qian ,  LERMAN, Justin Michael ,  BURGESS, David

    IPC分类号： A61B5/0215 ,  A61B5/00 ,  A61B5/107

    摘要： The present invention relates to a system for evaluating a vessel of a patient, the system comprising a processor configured to obtain a first series of pressure measurements from a first instrument within the vessel over a time period while the first instrument is moved longitudinally through the vessel from a first position to a second position, obtain a second series of pressure measurements from a second instrument positioned within the vessel over the time period while the second instrument remains in a fixed longitudinal position within the vessel, calculate a series of pressure ratio values using the first pressure measurements and the second pressure measurements, generate a pressure ratio curve for the time period using the series of pressure ratio values, identify a stepped change in the pressure ratio curve using an automatic step detection process, the automatic step detection process including identifying a general position of an ending point of the stepped change by identifying a change in the pressure ratio values within a third window along the pressure ratio curve that is at or below a third threshold change value, identifying an optimized position of the ending point by identifying a change in the pressure ratio values within a fourth window along the pressure ratio curve that is at or below a fourth threshold change value, wherein the fourth window is smaller than the third window, and the fourth threshold change value is smaller than the third threshold change value.

    SYSTEMS AND METHODS FOR LUMEN BORDER DETECTION IN INTRAVASCULAR ULTRASOUND SEQUENCES
    10.
    发明公开
    SYSTEMS AND METHODS FOR LUMEN BORDER DETECTION IN INTRAVASCULAR ULTRASOUND SEQUENCES 审中-公开
    EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN

    公开(公告)号：EP2962283A1

    公开(公告)日：2016-01-06

    申请号：EP14712837.5

    申请日：2014-02-28

    申请人： Boston Scientific Scimed, Inc.

    发明人： CAI, Anming, He ,  LI, Wenguang ,  SATHYANARAYANA, Shashidhar ,  THOMAS, Lewis, Jones, III

    IPC分类号： G06T7/20 ,  G06T7/00 ,  A61B5/00 ,  A61B6/00 ,  A61B8/08 ,  A61B5/02

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

    摘要： 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.

    摘要翻译： 用于处理用于显示的超声帧序列的方法包括：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。