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1. 发明授权

US06211888B1 Planar flow display method 有权
标题翻译：平面流显示方式
公开(公告)号：US06211888B1
公开(公告)日：2001-04-03
申请号：US09159688
申请日：1998-09-24
申请人： Shigeo Ohtsuki , Motonao Tanaka
发明人： Shigeo Ohtsuki , Motonao Tanaka
IPC分类号： G06T1120
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：流动显示方法能够使平面中的流动状态与流入和流出该平面的流体一起被捕获。例如，使用多普勒方法来获得在三维流中限定的平面区域（100）中的每个点处的速度分布。基于这样获得的速度分布，找到平面区域（100）中的流量分布。根据流量分布和速度分布，确定代表流入平面区域（100）的源点（12）和代表其流出的汇点（14）。流量分布中的轮廓线然后连接源点（12）和吸收点（14），以获得平面流线（10）的显示。

2. 发明授权

US5947903A Method to estimate planar flow from Doppler velocity distribution in an observation plane 失效
标题翻译：从观测平面中的多普勒速度分布估计平面流的方法
公开(公告)号：US5947903A
公开(公告)日：1999-09-07
申请号：US110146
申请日：1998-07-06
申请人： Shigeo Ohtsuki , Motonao Tanaka
发明人： Shigeo Ohtsuki , Motonao Tanaka
IPC分类号： G01F1/00 , A61B8/06 , G01F1/66 , G01P5/00 , G01P13/00 , G01S7/52 , 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：一种从观测平面中的多普勒速度分布估计观测平面中的流动的方法。通过线性积分从多普勒速度分布中发现多普勒流动函数。从多普勒速度分布中求出通过垂直于波束方向的路径的流量，并计算表示波束方向上该流量变化的多普勒流量范围函数。多普勒流量范围函数被分为线性边界流范围函数，其是二维分量和作为三维分量的平面边界流范围函数。平面边界流量范围函数由单位流量变化的逐步量化的平面边界流量范围函数近似，并且基于该量化的平面边界流动范围函数的阶跃位置来确定汇点和源点（简单源）。从简单来源的分布计算出代表观测平面的三维流入/流出的简单的源流函数。从多普勒流函数中减去平滑的简单源流函数，以计算平面流函数。组合平面流函数和简单的源流函数，以便基于该组合函数的轮廓线来估计平面流。

3. 发明授权

US5216639A Method for processing a doppler signal 失效
标题翻译：多普勒信号处理方法
公开(公告)号：US5216639A
公开(公告)日：1993-06-01
申请号：US773573
申请日：1991-11-08
申请人： Shigeo Ohtsuki , Motonao Tanaka
发明人： Shigeo Ohtsuki , Motonao Tanaka
IPC分类号： G01S15/50 , G01S15/58
CPC分类号： G01S15/582 , G01S15/584
摘要： The proposed method permits expansion, compression or reversion of a frequency of a Doppler shift signal. Shift frequency components of a measured Doppler shift signal are multiplied desired times so as to eliminate aliasing or permit precise detection of slow targets. A phase difference obtained at a time in a very short period is substituted with a phase difference obtained in a period longer than the very short period. The frequency conversion is applicable to the continuous wave Doppler system and the pulsed Doppler system.
摘要翻译： PCT No.PCT / JP90 / 00437 Sec。 371日期：1991年11月8日 102（e）日期1991年11月8日PCT 1990年3月30日PCT公布。公开号WO91 / 15780 日期为1991年10月17日。所提出的方法允许多普勒频移信号的频率的扩展，压缩或反转。将测量的多普勒频移信号的移频频率分量乘以所需时间，以消除混叠或允许对慢目标的精确检测。在非常短的时间内的时间获得的相位差被替换为在非常短的时间段内获得的相位差。频率转换适用于连续波多普勒系统和脉冲多普勒系统。

4. 发明授权

US06638224B2 Echo image forming apparatus and method 有权
标题翻译：回波图像形成装置及方法
公开(公告)号：US06638224B2
公开(公告)日：2003-10-28
申请号：US09859468
申请日：2001-05-18
申请人： Shigeo Ohtsuki , Motonao Tanaka
发明人： Shigeo Ohtsuki , Motonao Tanaka
IPC分类号： A61B800
CPC分类号： G01S7/52074 , A61B8/08 , A61B8/14 , A61B8/461 , G01S7/52026 , G01S7/52046 , G01S7/52071
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 to 14c) of different passing bands. Outputs of the respective filter parts (14a to 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 to 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.
摘要翻译：探头10发送宽带的超声波脉冲，并且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至14c）滤波。各滤波器部分（14a至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。检测出各滤波器部分（14a至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，由此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。

5. 发明授权

US5010528A Doppler flow velocity distribution measuring apparatus 失效
标题翻译：多普勒流速分布测量装置
公开(公告)号：US5010528A
公开(公告)日：1991-04-23
申请号：US465183
申请日：1990-02-28
申请人： Shigeo Ohtsuki , Motonao Tanaka
发明人： Shigeo Ohtsuki , Motonao Tanaka
IPC分类号： A61B8/06 , G01S15/89
CPC分类号： A61B8/13 , A61B8/06 , G01S15/8984 , G01S7/52071 , G01S7/52073
摘要： An apparatus for measuring the velocity distribution in a fluid by a pulse-Doppler method using an ultrasonic waver or an electromagnetic wave. The observation wave is transmitted to and received from the fluid and the reflected echo from the fluid is received so as to obtain the Doppler frequency. A predetermined transverse section is scanned with the observation wave so as to obtain the Doppler velocity distribution in the transverse section. Since the Doppler velocity distribution only contains the component in the direction of the observation wave, the Doppler velocity distribution is cumulatively integrated in the direction orthogonal to the direction of the observation wave and the integrated values are differentiated again in the direction of the observation wave, thereby obtaining the component in the orthogonal direction by calculation. If the observation wave is an ultrasonic beam, it is possible to observe the velocity distribution of the bloodstream in the heart.
摘要翻译： PCT No.PCT / JP89 / 00659 Sec。 371日期1990年2月28日 102（e）1990年2月28日PCT PCT 1989年6月30日PCT公布。出版物WO90 / 00033 日期1990年1月11日。一种使用超声波波动或电磁波通过脉冲多普勒法测量流体中的速度分布的装置。观察波被传送到流体并从流体接收，并且从流体接收反射的回波以获得多普勒频率。用观察波扫描预定的横截面，以获得横截面中的多普勒速度分布。由于多普勒速度分布仅包含观测波方向的分量，所以将多普勒速度分布累积在与观测波方向正交的方向上，并且在观测波的方向再次对积分值进行微分，从而通过计算获得正交方向的分量。如果观察波是超声波束，则可以观察心脏中血流的速度分布。

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