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    • 2. 发明授权
    • Fractional moving blood volume estimation with power doppler ultrasound
    • 动力多普勒超声的分数移动血容量估计
    • US5860929A
    • 1999-01-19
    • US657897
    • 1996-06-07
    • Jonathan M. RubinRonald S. AdlerJ. Brian FowlkesRay Steven Spratt
    • Jonathan M. RubinRonald S. AdlerJ. Brian FowlkesRay Steven Spratt
    • A61B8/06
    • A61B8/463A61B8/06
    • A method for quantitatively estimating the amount of tissue that contains moving blood using power Doppler ultrasound. A region of interest is identified from a frozen image (i.e., a snapshot screen display created by displaying the last real-time image for a given scan). The region of interest is specified by using a pointing device (e.g., a mouse). An object that contains one hundred percent blood flow and is located at the same depth as the region of interest, but not necessarily inside the region of interest, is identified and the corresponding power noted and designated as the reference power level. The display is adjusted to show the one hundred percent blood flow vessel in a designated color (such as, for example, green) and all other power levels are normalized to the reference power level. The fractional blood volume is quantitatively estimated by summing the normalized Doppler power levels in a region of interest and dividing the sum by the number of pixels in region of interest. The numerical result for the specified region of interest may be shown on the display of the ultrasound scanner.
    • 一种使用功率多普勒超声波定量估计含有移动血液的组织量的方法。 从冻结图像识别感兴趣区域(即,通过显示给定扫描的最后一个实时图像而创建的快照屏幕显示)。 通过使用指示设备(例如,鼠标)来指定感兴趣的区域。 识别出含有百分之一百血液流量并且位于与感兴趣区域相同的深度但不一定在感兴趣区域内的物体,并且将相应的功率标记并指定为参考功率水平。 调整显示器以指定颜色(例如,绿色)显示百分之一百的血流容器,并将所有其它功率电平归一化为参考功率电平。 通过将感兴趣区域中的归一化多普勒功率电平相加并将该和除以感兴趣区域中的像素数量来定量估计分数血容量。 指定感兴趣区域的数值结果可以显示在超声波扫描仪的显示器上。
    • 6. 发明授权
    • Method and assembly for performing ultrasound surgery using cavitation
    • 使用气穴进行超声手术的方法和装配
    • US06309355B1
    • 2001-10-30
    • US09218310
    • 1998-12-22
    • Charles A. CainJ. Brian Fowlkes
    • Charles A. CainJ. Brian Fowlkes
    • A61B1722
    • A61B17/22004A61B2017/22008A61B2017/22089A61M37/0092
    • A method and assembly are provided which use cavitation induced by an ultrasound beam for creating a controlled surgical lesion in a selected treatment volume of a patient. First, a plurality of microbubbles are provided in the treatment volume. Preferably, the threshold for cavitation of microbubbles in the treatment volume is lowered compared with the threshold for cavitation in surrounding tissues. The expected location of the surgical lesion within the treatment volume may be previewed, and then the microbubbles in the treatment volume are cavitated with the ultrasound beam to create the controlled surgical lesion. Preferably, the creation of the surgical lesion at the expected lesion location is then verified. Using the method and assembly of the present invention, the cavitation threshold within the treatment volume is made predictable, and a low frequency ultrasound beam may be used to cavitate the microbubbles within the treatment volume without causing damage to surrounding tissues.
    • 提供了一种方法和组件,其使用由超声波束引起的空化,以在患者的所选择的治疗体积中产生受控手术病变。 首先,在处理容积中设置多个微泡。 优选地,与周围组织中的空化阈值相比,治疗体积中的微泡气蚀阈值降低。 手术病变在治疗体积内的预期位置可以预览,然后治疗体积中的微泡被超声波束气蚀,以产生受控的手术病变。 优选地,验证在预期的病变位置处的手术损伤的产生。 使用本发明的方法和装配,可以预测处理体积内的气蚀阈值,并且可以使用低频超声波束来对治疗体积内的微泡进行空化,而不会对周围组织造成损伤。