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    • 3. 发明公开
    • ANALYSIS OF MITRAL REGURGITATION BY ULTRASONIC IMAGING
    • ANALYZE VON MITRALINSUFFIZIENZ DURCH ULTRASCHALLBILDGEBUNG
    • EP2654570A1
    • 2013-10-30
    • EP11811389.3
    • 2011-12-16
    • Koninklijke Philips N.V.
    • WEI, QifengTHIELE, KarlYOGANATHAN, AjitYAP, Choon Hwai
    • A61B8/06G01S7/52G01S15/02
    • A61B8/06A61B8/0883A61B8/13A61B8/488G01S15/8979G01S15/8993
    • 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.
    • 描述了超声诊断成像系统,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孔口的速度矢量的值。 这些模型值被修改为超声物理和超声系统操作的影响产生预期的速度值。 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导出的参数来计算真实的孔口位置,流速和体积流量。