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    • 3. 发明授权
    • Method to control frame rate in ultrasound imaging
    • 超声成像中控制帧率的方法
    • US5797846A
    • 1998-08-25
    • US774665
    • 1996-12-30
    • Mir Said Seyed-BolorforoshMichael J. WashburnDavid D. Becker
    • Mir Said Seyed-BolorforoshMichael J. WashburnDavid D. Becker
    • G01N29/26A61B8/00G01S7/52H04R17/00
    • G01S7/52085G01S7/52025G01S7/52046G01S7/5206G01S7/52063G01S7/52071
    • A method for optimizing the beam distribution to obtain the highest frame rate together with the least amount of acoustic noise while limiting the spatial aliasing to an acceptable level. The beam distribution is adjusted according to the scan format and as a function of the beam width, which is proportional to the product of the F number and the operating wavelength. As the F number changes in going from the shallow depth to a deeper depth, the number of beams fired to construct an image would change correspondingly. In addition, if the F number is changing in going from the center of image to the edge of the image, the separation of the fired beams would change. Alternatively, if the operating frequency is being changed in going from shallower depths to deeper depths or in going from the center of image to the edge of the image, the beam spacing is changed in order to fire the optimum number of beams at all times, and thereby obtain the highest frame rate. Another variation is to have a beam distribution which depends on the spatial resolution of the display unit. For a sector scan, the number of beams which are fired at the shallower depths can be made smaller than the number of beams fired at the deeper depths. Once the beam distribution has been defined, the sequencing of beam firings must be determined to maximize the frame rate.
    • 一种用于优化波束分布以获得最高帧速率以及最小量声学噪声同时将空间混叠限制到可接受水平的方法。 光束分布根据扫描格式和光束宽度的函数进行调节,光束宽度与F数与工作波长的乘积成比例。 随着F数从浅层深度的深度变化到更深的深度,发射构造图像的光束数将相应变化。 另外,如果从图像中心到图像边缘的F数正在变化,则射束的分离将改变。 或者,如果工作频率从较浅的深度变化到更深的深度,或者从图像的中心向图像的边缘变化,则改变光束间隔以始终激发最佳数量的光束, 从而获得最高的帧速率。 另一种变化是具有取决于显示单元的空间分辨率的光束分布。 对于扇区扫描,可以使在较浅深度处发射的光束的数量小于在较深深度处发射的光束的数量。 一旦定义了光束分布,必须确定光束发射的顺序以使帧速率最大化。
    • 7. 发明授权
    • Method and apparatus for automatic transducer selection in ultrasound
imaging system
    • 超声成像系统中自动换能器选择的方法和装置
    • US5505203A
    • 1996-04-09
    • US344055
    • 1994-11-23
    • Thomas L. DeitrichMichael J. Washburn
    • Thomas L. DeitrichMichael J. Washburn
    • A61B8/00G01S15/89G10K11/00
    • A61B8/4438A61B8/00G01S15/899G10K11/004A61B8/4209A61B8/4405
    • A method and an apparatus for activating one of a plurality of connected transducers in response to the operator picking up that transducer. This enables the selection of a transducer without the need for pressing a button or key. Automatic selection is accomplished by placing a proximity sensor located within the holder of the transducer or on the transducer itself to indicate whether the transducer is being held by its holder. Switches are also incorporated to detect when a transducer connector has been plugged into each port on the ultrasound imaging machine. Depending on the order in which unactivated normal transducers attain a state whereby the respective normal transducer is both connected and out of its holder, a stack of probe identifiers is created. Identifiers for connected special transducers are added to the stack below any probe identifiers for normal transducers. The identifier at the top of the stack indicates the transducer which will be activated next, i.e., after the presently active transducer has been deactivated. Identifiers are removed from the stack if the corresponding transducer is disconnected from the system or placed in its holder.
    • 响应于操作者拾取该换能器,激活多个连接的换能器中的一个的方法和装置。 这使得能够选择换能器而不需要按压按钮或键。 通过将位于传感器的保持器内的接近传感器放置在换能器本身上以指示换能器是否被其保持器保持来实现自动选择。 还结合了开关以检测何时将换能器连接器插入超声成像机的每个端口。 取决于未激活的正常换能器达到相应的正常换能器连接并离开其保持器的状态的顺序,产生一堆探测器标识符。 用于连接的特殊传感器的标识符被添加到正常换能器的任何探头标识符下面的堆叠中。 堆叠顶部的标识符指示接下来将被激活的换能器,即在当前活动的换能器已被停用之后。 如果相应的传感器与系统断开或放置在其固定器中,则从堆叠中移除标识符。