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1. 发明授权

US5462059A Method for assessing and displaying vascular architecture using ultrasound 失效
标题翻译：使用超声波评估和显示血管结构的方法
公开(公告)号：US5462059A
公开(公告)日：1995-10-31
申请号：US248824
申请日：1994-05-25
申请人： Katherine W. Ferrara , V. Ralph Algazi
发明人： Katherine W. Ferrara , V. Ralph Algazi
IPC分类号： A61B8/08 , G01S15/58 , G01S15/89 , A61B8/06
CPC分类号： A61B8/06 , A61B8/08 , A61B8/483 , G01S15/8981 , A61B8/0833 , G01S15/584 , G01S15/8993
摘要： A method for assessing and displaying vasculature in a tissue mass using ultrasound and optimal velocity dependent data acquisition to differentiate between received signals from stationary tissue and received signals from slowly moving blood is disclosed herein. For a particular flow velocity, an optimal periodic or aperiodic signaling strategy is determined by matching the observation interval of any group of scatters to the correlated signal interval. Signals from moving blood cells are separated from signals from stationary tissue using a wall filter. Wall filtered signals from moving blood cells are further separated from signals from stationary tissue using a threshold filter. The resulting enhanced spatial and velocity resolution provides for identification of tumors by resistive index measurement, assessment of the percentage of vasculature in a section of tissue mass, and assessment of random structural characteristics, and further provides for three dimensional graphical display of vasculature within and surrounding a tissue mass.
摘要翻译：本文公开了一种使用超声波和最佳速度相关数据采集来评估和显示组织块中的脉管系统以区分来自静止组织的接收信号和来自缓慢移动的血液的接收信号的方法。对于特定的流速，通过将任何散射组的观测间隔与相关信号间隔进行匹配来确定最佳周期性或非周期性信令策略。来自移动血细胞的信号使用壁滤器与来自固定组织的信号分离。来自移动血细胞的壁滤波信号使用阈值滤波器进一步与来自固定组织的信号分离。所得到的增强的空间和速度分辨率通过阻力指数测量，组织块截面中脉管系统的百分比评估以及随机结构特征的评估来提供肿瘤的鉴别，并进一步提供血管内和周围的脉管系统的三维图形显示组织块

2. 发明授权

US5390677A Method for assessing and displaying the true three dimensional magnitude of blood velocity 失效
标题翻译：评估和显示血液速度真实三维大小的方法
公开(公告)号：US5390677A
公开(公告)日：1995-02-21
申请号：US251710
申请日：1994-05-31
申请人： Katherine W. Ferrera , V. Ralph Algazi
发明人： Katherine W. Ferrera , V. Ralph Algazi
IPC分类号： A61B8/06 , G01F1/66 , G01S7/52 , G01S15/58 , G01S15/89 , G06F17/00
CPC分类号： G01S15/8993 , A61B8/06 , A61B8/483 , G01F1/667 , G01S15/8984 , G01S7/52071
摘要： A method for assessing and displaying the true three dimensional magnitude of fluid velocity using ultrasonic imaging signals is disclosed. Fluid, such as blood, flowing through a vessel is subjected to ultrasound imaging signals using a transducer. Axial velocity of fluid motion in relation to the transducer beam is then determined from the imaging signals. Next, a region of laminar flow is identified using the axial velocity. Lateral transit time in the region of laminar flow is then estimated as an indication of velocity in the direction perpendicular to the transducer beam. The three dimensional velocity magnitude is then estimated using the lateral transmit time and the total distance across the lateral beam width, or by using the beam to vessel angle which is estimated using the lateral transit time. The estimated three dimensional velocity is then displayed as a numerical representation or as an image as a two dimensional waveform as a function of time or as a color flow map where the velocity magnitude is represented by different colors and/or intensity of color.
摘要翻译：公开了一种使用超声波成像信号评估和显示流体速度的真实三维幅度的方法。使用换能器对流过血管的流体（例如血液）进行超声成像信号。然后根据成像信号确定相对于换能器束的流体运动的轴向速度。接下来，使用轴向速度来识别层流区域。然后在层流区域中的横向时间传递时间被估计为垂直于换能器束的方向上的速度的指示。然后使用横向传输时间和跨横梁宽度的总距离，或者通过使用使用横向传播时间估计的束到容器角来估计三维速度幅度。然后，估计的三维速度作为数字表示或作为二维波形的图像作为时间的函数显示，或者作为颜色流动图，其中速度幅度由不同颜色和/或颜色强度表示。

3. 发明授权

US07333622B2 Dynamic binaural sound capture and reproduction 有权
标题翻译：动态双耳声音捕获和再现
公开(公告)号：US07333622B2
公开(公告)日：2008-02-19
申请号：US10414261
申请日：2003-04-15
申请人： V. Ralph Algazi , Richard O. Duda , Dennis Thompson
发明人： V. Ralph Algazi , Richard O. Duda , Dennis Thompson
IPC分类号： H04R5/02 , H04R5/00 , H04R1/10 , H04R3/00 , G01S3/80
CPC分类号： H04S7/304 , H04R3/005 , H04R5/027 , H04S1/005 , H04S3/004 , H04S2400/01 , H04S2400/15
摘要： A new approach to capturing and reproducing either live or recorded three-dimensional sound is described. Called MTB for “Motion-Tracked Binaural,” the method employs several microphones, a head tracker, and special signal-processing procedures to combine the signals picked up by the microphones. MTB achieves a high degree of realism by effectively placing the listener's ears in the space where the sounds are occurring, moving the virtual ears in synchrony with the listener's head motions. MTB also provides a universal format for recording spatial sound.
摘要翻译：描述了捕获和再现现场或录制三维声音的新方法。称为“运动跟踪双耳”的MTB，该方法采用多个麦克风，头部跟踪器和特殊的信号处理程序来组合麦克风拾取的信号。 MTB通过有效地将聆听者的耳朵放置在声音发生的空间中，实现了高度的现实感，与听者的头部动作同步移动虚拟耳朵。 MTB还提供了用于录制空间声音的通用格式。

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