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13 条记录 (耗时 0.013 秒)

    Planar flow display method
    1.
    发明公开
    Planar flow display method 有权
    平面流量显示方法

    公开(公告)号：EP0919832A2

    公开(公告)日：1999-06-02

    申请号：EP98118496.3

    申请日：1998-09-30

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao ,  Fukuda, Kotaro

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： G01S7/52 ,  G01S15/89 ,  G01F15/06

    CPC分类号： G01S15/8988 ,  G01S7/52068 ,  G01S7/52071 ,  G01S15/8979

    摘要： A flow display method enabling the state of flows in a plane to be grasped together with inflow into and outflow from that plane. A Doppler method, for example, is used to obtain a velocity profile at each point in a planar area (100) of interest defined in a three-dimensional flow. A flow rate profile in the planar area (100) is found on the basis of the thus obtained velocity profile. From the flow rate profile and the velocity profile there are determined source points (12) representative of inflow into the planar area (100) and sink points (14) representative of outflow therefrom. Contour lines in the flow rate profile then join the source points (12) and the sink points (14) to obtain a display of planar streamlines (10).

    摘要翻译： 一种流量显示方法，使平面中的流动状态能够随着流入和流出该平面一起被抓住。 例如，多普勒方法用于获得在三维流中定义的感兴趣的平面区域（100）中的每个点处的速度分布。 基于如此获得的速度分布图找到平面区域（100）中的流量分布。 根据流速曲线和速度曲线，确定表示流入平面区域（100）的流入源点（12）和代表流出的汇点（14）。 流量曲线中的轮廓线然后连接源点（12）和汇点（14）以获得平面流线（10）的显示。

    Planar flow display method
    3.
    发明公开
    Planar flow display method 有权
    显示Planarströmung的方法

    公开(公告)号：EP0919832A3

    公开(公告)日：1999-11-17

    申请号：EP98118496.3

    申请日：1998-09-30

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao ,  Fukuda, Kotaro

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： G01S7/52 ,  G01S15/89 ,  G01F15/06

    CPC分类号： G01S15/8988 ,  G01S7/52068 ,  G01S7/52071 ,  G01S15/8979

    摘要： A flow display method enabling the state of flows in a plane to be grasped together with inflow into and outflow from that plane. A Doppler method, for example, is used to obtain a velocity profile at each point in a planar area (100) of interest defined in a three-dimensional flow. A flow rate profile in the planar area (100) is found on the basis of the thus obtained velocity profile. From the flow rate profile and the velocity profile there are determined source points (12) representative of inflow into the planar area (100) and sink points (14) representative of outflow therefrom. Contour lines in the flow rate profile then join the source points (12) and the sink points (14) to obtain a display of planar streamlines (10).

    Measuring doppler velocity
    4.
    发明公开
    Measuring doppler velocity 失效
    测量多普勒速度

    公开(公告)号：EP0361945A3

    公开(公告)日：1991-04-24

    申请号：EP89309941.6

    申请日：1989-09-29

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： G01S15/58

    CPC分类号： G01S15/582 ,  G01S15/584

    摘要： A method of measuring Doppler velocity is described in which at least two phase signals are detected at two different times and stored in a memory (2, 3), a base value is estimated from the two phase signals in a base value estimating means (4), the base value is compared with a new detected signal in a compare circuit (6) and Doppler velocity data is detected due to a difference between the base value and the new detected signal latched in a latch circuit (5).

    DOPPLER SYSTEM FLOW VELOCITY DISTRIBUTION MEASURING APPARATUS
    5.
    发明授权
    DOPPLER SYSTEM FLOW VELOCITY DISTRIBUTION MEASURING APPARATUS 失效
    多普勒用于测量流量的分布。

    公开(公告)号：EP0379593B1

    公开(公告)日：1994-12-14

    申请号：EP89907823.2

    申请日：1989-06-30

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： A61B8/06

    CPC分类号： A61B8/13 ,  A61B8/06 ,  G01S7/52071 ,  G01S7/52073 ,  G01S15/8984

    摘要： This invention relates to an apparatus for measuring a velocity distribution inside a fluid by a pulse Doppler method using an ultrasonic wave or electromagnetic wave. An observation wave is transmitted to and received from a fluid and a reflection echo from the fluid is received to determine its Doppler frequency. The observation wave scans inside a predetermined tomographic plane and the Doppler velocity distribution in this tomographic plane is determined. Since this Doppler speed distribution is only the component in the direction of the observation wave, it is accumulated in the direction perpendicular to this observation wave direction and is further differentiated again in the observation wave direction so as to calculate the component in the perpendicular direction. If the observation wave is an ultrasonic beam, the velocity distribution of the blood inside the heart can be inspected.

    Method to estimate planar flow from doppler velocity distribution in an observation plane
    6.
    发明公开
    Method to estimate planar flow from doppler velocity distribution in an observation plane 失效
    一种用于确定在一个观测平面从多普勒速度分布的平面流方法

    公开(公告)号：EP0890825A1

    公开(公告)日：1999-01-13

    申请号：EP98112494.4

    申请日：1998-07-06

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： G01F1/66 ,  A61B8/06 ,  G01S15/89

    CPC分类号： G01S15/8979 ,  A61B8/06 ,  G01F1/663 ,  G01S7/52073

    摘要： A method for estimating a flow in an observation plane from the Doppler velocity distribution in the observation plane. A Doppler flow function is found from the Doppler velocity distribution by linear integration. A flow rate passing through a path perpendicular to a beam direction is found from the Doppler velocity distribution, and a Doppler flow range function representing a variation of this flow rate in the beam direction is calculated. The Doppler flow range function is separated into a linear boundary flow range function which is a two-dimensional component and a planar boundary flow range function which is a three-dimensional component. The planar boundary flow range function is approximated by a stepwise quantized planar boundary flow range function which varies in unit flow rate, and sink points and source points (simple sources) are determined based on a step position of this quantized planar boundary flow range function. A simple source flow function representing a three-dimensional inflow/outflow to and from the observation plane is calculated from a distribution of simple sources. A smoothed simple source flow function is subtracted from the Doppler flow function so as to calculate a planar flow function. The planar flow function and simple source flow function are combined so as to estimate a planar flow based on a contour line of this combined function.

    摘要翻译： 一种用于在观察平面从观测多普勒速度分布估计的流程计划的方法。 多普勒流动函数是从由线性积分多普勒速度分布找到。 通过路径传递垂直于光束方向的流速从多普勒速度分布发现，以及表示在射束方向上该流速的变化的多普勒流量范围函数被计算。 多普勒流量范围函数被分离成线性的边界的流量范围内的所有功能这是一种二维的部件和平面边界的流量范围内的所有功能这是一种三维部件。 平面边界的流量范围功能由一个逐步量化平面边界流量范围功能在单位流量而变化近似，宿点和源点（简单源）是确定性的开采在此基础上量化的平面边界流量范围函数的步骤位置。 表示三维流入/流出，并从观察面的简单源流动函数是从简单的源的分布来计算。 经平滑的简单的源流动函数是从多普勒血流函数中减去，从而计算一个平面流动的功能。 的平面流动的功能和简单的源流动函数被组合，以便估计基于该组合的功能的轮廓线的平面流动。

    Echo image forming apparatus and method
    8.
    发明公开
    Echo image forming apparatus and method 有权
    Gerätund Verfahren zur Echobilderzeugung

    公开(公告)号：EP1260834A1

    公开(公告)日：2002-11-27

    申请号：EP01112389.0

    申请日：2001-05-21

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： G01S15/89 ,  G01S7/52

    CPC分类号： G01S15/8954 ,  G01S7/52046 ,  G01S7/52071 ,  G01S7/52077 ,  G01S15/8952

    摘要： A probe (10) transmits an ultrasonic pulse of a wide band, and detects its echo to generate a reception signal. The reception signals are respectively filtered by three filter parts (14a-14c) of different passing bands. Outputs of the respective filter parts (14a-14c) are signal components of a narrow band, and speckle components (interference components by a fine structure) appear conspicuously. Outputs of the respective filter parts (14a-14c) are detected, and the detection outputs are set respectively as each color signal of R, G and B, and are composed by an image composition part (20), whereby a speckle part is displayed by coloring in R, G or B. As a tissue boundary part is high in a signal level in any band, it is displayed in a whitish color by composition. Application to weather radar is also described.

    摘要翻译： 探针（10）发送宽带的超声波脉冲，并检测其回波以产生接收信号。 接收信号分别由不同通带的三个滤波器部分（14a-14c）滤波。 各滤波器部分（14a-14c）的输出是窄带的信号分量，并且散斑分量（通过精细结构的干扰分量）显而易见。 检测各个滤光器部分（14a-14c）的输出，并将检测输出分别设置为R，G和B的每个颜色信号，并由图像合成部分（20）组成，从而显示散斑部分 通过在R，G或B中着色。由于组织边界部分在任何频带中的信号电平较高，所以通过组合显示为发白色。 还描述了对气象雷达的应用。

    DOPPLER SYSTEM FLOW VELOCITY DISTRIBUTION MEASURING APPARATUS
    9.
    发明公开
    DOPPLER SYSTEM FLOW VELOCITY DISTRIBUTION MEASURING APPARATUS 失效
    DOPPLER-GERÄTZUR MESSUNG DER VERTEILUNG DERSTRÖMUNGSGESCHWINDIGKEIT。

    公开(公告)号：EP0379593A1

    公开(公告)日：1990-08-01

    申请号：EP89907823.2

    申请日：1989-06-30

    申请人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    发明人： Ohtsuki, Shigeo ,  Tanaka, Motonao

    IPC分类号： A61B8/06

    CPC分类号： A61B8/13 ,  A61B8/06 ,  G01S7/52071 ,  G01S7/52073 ,  G01S15/8984

    摘要： This invention relates to an apparatus for measuring a velocity distribution inside a fluid by a pulse Doppler method using an ultrasonic wave or electromagnetic wave. An observation wave is transmitted to and received from a fluid and a reflection echo from the fluid is received to determine its Doppler frequency. The observation wave scans inside a predetermined tomographic plane and the Doppler velocity distribution in this tomographic plane is determined. Since this Doppler speed distribution is only the component in the direction of the observation wave, it is accumulated in the direction perpendicular to this observation wave direction and is further differentiated again in the observation wave direction so as to calculate the component in the perpendicular direction. If the observation wave is an ultrasonic beam, the velocity distribution of the blood inside the heart can be inspected.

    摘要翻译： 该系统具有用于通过流体发送超声波或电磁波或类似物的发射器和接收器，和/或接收反射回波信号，从该多普勒发现波束方向上的移位速度。 在横截面上扫描反射波，并获得多普勒速度的二维分布。 第一个内存存储此分发。 积分器将（读出）多普勒速度与光束成直角的方向进行积分。 构造方向和流动函数，然后将其存储在二维存储器中。 （读出）功能分布在光束的方向上有差异，以便在扫描平面（垂直于光束的方向）上给出速度分量。