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    ANALYSIS OF MITRAL REGURGITATION FROM SLIT ORIFICES BY ULTRASONIC IMAGING
    2.
    发明申请
    ANALYSIS OF MITRAL REGURGITATION FROM SLIT ORIFICES BY ULTRASONIC IMAGING 审中-公开
    通过超声波成像从狭缝分析中分析麻醉药物

    公开(公告)号：US20130261458A1

    公开(公告)日：2013-10-03

    申请号：US13991551

    申请日：2011-12-15

    申请人： Qifeng Wei ,  Karl E. Thiele ,  Ajit P. Yoganathan ,  Choon-Hwai Yap

    发明人： Qifeng Wei ,  Karl E. Thiele ,  Ajit P. Yoganathan ,  Choon-Hwai Yap

    IPC分类号： A61B8/06 ,  A61B8/00 ,  A61B8/14 ,  A61B8/08

    CPC分类号： A61B8/06 ,  A61B8/145 ,  A61B8/4444 ,  A61B8/4488 ,  A61B8/463 ,  A61B8/483 ,  A61B8/488 ,  A61B8/5207 ,  A61B8/5223

    摘要： An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a plurality of pinhole leaks or a slit leak of a mitral valve. A plurality of orifice locations of a leaking valve are identified and Doppler values obtained from a flow velocity field proximal each orifice. The Doppler values of each flow velocity field vectorially relating to the orifice location are processed to produce a measure of flow through the orifice. The flow measurements for a plurality of such orifices are summed to produce a quantified measure of regurgitant flow through a plurality of pinhole leaks or along a slit leak.

    摘要翻译： 描述了超声波诊断成像系统，其定量通过多个针孔泄漏或二尖瓣的狭缝泄漏的反流量。 识别泄漏阀的多个孔位置，并从每个孔附近的流速场获得多普勒值。 对与孔口位置进行矢量相关的每个流速场的多普勒值进行处理，以产生通过孔口的流量的量度。 将多个这样的孔的流量测量相加以产生通过多个针孔泄漏或沿着狭缝泄漏的回流量的量化测量。

    Analysis of mitral regurgitation by ultrasonic imaging
    3.
    发明授权
    Analysis of mitral regurgitation by ultrasonic imaging 有权

    公开(公告)号：US10674993B2

    公开(公告)日：2020-06-09

    申请号：US13994794

    申请日：2011-12-16

    申请人： Qifeng Wei ,  Karl Thiele ,  Ajit Yoganathan ,  Choon-Hwai Yap

    发明人： Qifeng Wei ,  Karl Thiele ,  Ajit Yoganathan ,  Choon-Hwai Yap

    IPC分类号： A61B8/06 ,  G01S15/89 ,  A61B8/13 ,  A61B8/08

    摘要： An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a mitral valve. A flow quantification processor (34) in the ultrasound system produces a mathematical model of a flow velocity field proximal to a regurgitant orifice. The velocity field model produces values of velocity vectors directed toward the regurgitant orifice. These modeled values are modified for the effects of ultrasound physics and ultrasound system operation to produce expected velocity values. The expected velocity values are compared with actual Doppler velocities measured by the ultrasound system, and the differences accumulated to a mean square error which is used to adjust parameters of the model such as the orifice location and flow velocities. When this iterative processing converges with a desired comparison, parameters derived from the finally adjusted model are used to calculate the true orifice location, flow rate, and volume flow.

    ANALYSIS OF MITRAL REGURGITATION BY ULTRASONIC IMAGING
    4.
    发明申请
    ANALYSIS OF MITRAL REGURGITATION BY ULTRASONIC IMAGING 审中-公开
    通过超声成像分析麻醉记忆

    公开(公告)号：US20130274606A1

    公开(公告)日：2013-10-17

    申请号：US13994794

    申请日：2011-12-16

    申请人： Qifeng Wei ,  Karl Thiele ,  Ajit Yoganathan ,  Choon-Hwai Yap

    发明人： Qifeng Wei ,  Karl Thiele ,  Ajit Yoganathan ,  Choon-Hwai Yap

    IPC分类号： A61B8/06

    CPC分类号： A61B8/06 ,  A61B8/0883 ,  A61B8/13 ,  A61B8/488 ,  G01S15/8979 ,  G01S15/8993

    摘要： An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a mitral valve. A flow quantification processor (34) in the ultrasound system produces a mathematical model of a flow velocity field proximal to a regurgitant orifice. The velocity field model produces values of velocity vectors directed toward the regurgitant orifice. These modeled values are modified for the effects of ultrasound physics and ultrasound system operation to produce expected velocity values. The expected velocity values are compared with actual Doppler velocities measured by the ultrasound system, and the differences accumulated to a mean square error which is used to adjust parameters of the model such as the orifice location and flow velocities. When this iterative processing converges with a desired comparison, parameters derived from the finally adjusted model are used to calculate the true orifice location, flow rate, and volume flow.

    摘要翻译： 描述了一种超声诊断成像系统，其量化通过二尖瓣的反流。 超声系统中的流量定量处理器（34）产生靠近反流口的流速场的数学模型。 速度场模型产生指向反流口的速度矢量的值。 这些模型值被修改用于超声物理和超声系统操作的影响以产生预期的速度值。 将预期速度值与由超声系统测量的实际多普勒速度进行比较，并且将差异累积到均方误差，其用于调整模型的参数，例如孔口位置和流速。 当该迭代处理以期望的比较收敛时，使用从最终调整的模型得到的参数来计算真实的孔口位置，流速和体积流量。