-
公开(公告)号：US4476874A
公开(公告)日：1984-10-16
申请号：US383568
申请日：1982-06-01
申请人： Jon C. Taenzer , Donald J. Burch , Philip S. Green
发明人： Jon C. Taenzer , Donald J. Burch , Philip S. Green
CPC分类号： A61B8/467 , A61B8/06 , A61B8/461 , G01S15/8979 , G01S7/52074 , G01S7/52084
摘要： Method and apparatus for obtaining quantitative velocity profile measurements and for displaying the same are disclosed. From such velocity measurements, instantaneous volume flow within a vessel across which the measurements are obtained is calculated. In one operating mode, a real-time display of quantitative velocity profiles is provided together with a scrolling display of a plurality of total instantaneous volume flow measurements. In another operating mode, velocity profiles obtained at corresponding points in successive cardiac cycles are averaged to obtain a plurality of average velocity profiles which are selectively displayed under operator control. In this mode of operation, a fixed display of total instantaneous volume flow measurements obtained over a period of time which includes at least one cardiac cycle is provided. A movable pointer adjacent the display of total instantaneous volume flow values and under operator control is provided to identify the point in the cardiac cycle selected for display of an associated velocity profile. Means for calculating volume flow over a cardiac cycle, and for numerically displaying said average also is provided. Depth control means control both depth and gain functions of the pulsed Doppler system.
摘要翻译： 公开了用于获得定量速度分布测量和显示它们的方法和装置。 从这样的速度测量中，计算获得测量值的容器内的瞬时体积流量。 在一个操作模式中，提供定量速度曲线的实时显示以及多个总瞬时体积流量测量的滚动显示。 在另一种操作模式中，在连续的心动周期的相应点处获得的速度分布被平均以获得在操作者控制下有选择地显示的多个平均速度分布。 在这种操作模式中，提供在包括至少一个心动周期的一段时间内获得的总瞬时体积流量测量的固定显示。 提供了与总瞬时体积流量值的显示相邻并且在操作者控制下的可移动指示器，以识别选择用于显示相关速度分布的心动周期中的点。 还提供了用于计算心动周期上的体积流量并用于数字显示所述平均值的装置。 深度控制装置控制脉冲多普勒系统的深度和增益功能。
-
公开(公告)号：US4391281A
公开(公告)日：1983-07-05
申请号：US757132
申请日：1977-01-06
申请人： Philip S. Green
发明人： Philip S. Green
CPC分类号： G10K11/32 , A61B8/00 , A61B8/4281 , A61B8/4461 , G01N29/0645 , G10K11/02
摘要： An ultrasonic transducer system for use with tissue is shown, which system includes a container of liquid acoustic coupling medium within which focused transducer means are located. Focusing of the transducer means may be effected acoustically, as by use of an acoustic lens, and/or electronically, as by use of a transducer array. The liquid medium container is closed at one end by a rigid acoustically transparent window, or diaphragm, for acoustically coupling to the skin and underlying tissue of the subject under investigation. The material of the liquid acoustic coupling medium is selected so that the velocity of propagation of acoustic waves therein is substantially less than the velocity of the acoustic waves within the tissue under investigation. By using a low speed-of-sound coupling medium a shorter propagation path may be employed than is required by prior art transducer arrangements in which the speed-of-sound in the tissue and coupling fluid is substantially the same. Operation in either scanning or non-scanning modes is contemplated, and scanning, when employed, may be effected mechanically or electronically. In the sector scanning mode, the system may be operated in a manner such that the angular sector swept out by the focused beam in the tissue exceeds that in the low speed-of-sound liquid coupling medium as a result of refraction at the window interfaces.
摘要翻译： 示出了用于组织的超声换能器系统，该系统包括液体声耦合介质的容器，聚焦的换能器装置位于该容器中。 传感器装置的聚焦可以通过使用声透镜进行声学，和/或电子的，如通过使用换能器阵列。 液体介质容器在一端通过刚性声透明窗或隔膜封闭，用于声学耦合到被研究对象的皮肤和潜在组织。 选择液体声耦合介质的材料，使得其中的声波的传播速度基本上小于所研究的组织内的声波的速度。 通过使用低音速耦合介质，可以采用比现有技术的换能器装置所需的更短的传播路径，其中组织和耦合流体中的声速基本上相同。 考虑到扫描或非扫描模式的操作，并且当采用扫描时可以机械地或电子地进行扫描。 在扇区扫描模式中，系统可以以这样的方式操作，使得由于在窗口界面处的折射的结果，被组织中的聚焦光束扫过的角扇区超过低声速液体耦合介质中的角扇区 。
-
53.发明授权
公开(公告)号：US4305296A
公开(公告)日：1981-12-15
申请号：US119937
申请日：1980-02-08
CPC分类号： G10K11/346 , G01N29/0609 , G01N29/0645 , G01N29/221 , G01N29/262 , G01S15/8918 , G01S7/52003 , G01S7/52046 , G01S7/52063 , G10K11/34 , G10K11/345
摘要： Method and apparatus for pulsed ultrasonic imaging of a section of the interior of an object from reflections by internal discontinuities of recurrent transmitted pulses of ultrasonic energy, are provided. There is included a transducer array comprising a plurality of adjacent transducer elements for converting echo signals received from discontinuities within the object to equivalent electrical signals. Range gated signal processing means are provided for processing electrical signals from the transducer array reflected from discontinuities within any one of a plurality of range zones within the section to be imaged to provided range gated signals representative of segments of lines within the section to be imaged. The signal processing means includes electronic receiver beam focusing and scanning means for focusing the transducer array at the range zone at which the signals are range gated and for scanning the same. Visual display means for visual display of the line segment signals are provided for visual display of the entire section to be imaged. The signal processing means may include digital scan converter means for temporary storage of received signals for display thereof at a conventional TV monitor. Different numbers of transducer elements are employed for beam forming at the different range zones; a maximum number of adjacent transducer elements being used for operation at the zone farthest from the transducer array, and decreasing numbers being used for zones nearer the array. The electronic beam focusing means includes a plurality of fixed delay means, at least some of which are employed for focusing at a plurality of range zones thereby minimizing the total number required for operation of the system.
摘要翻译： 提供了用于通过超声能量的经常发送的脉冲的内部不连续的反射的物体内部的一部分脉冲超声成像的方法和装置。 包括一个换能器阵列，其包括多个相邻的换能器元件，用于将从物体内的不连续点接收的回波信号转换为等效的电信号。 范围门控信号处理装置被提供用于处理来自反射的换能器阵列的电信号，所述电信号反映在待成像部分内的多个范围区域中的任何一个范围区域内，以提供表示待成像部分内的线段的范围门控信号。 信号处理装置包括电子接收机光束聚焦和扫描装置，用于将信号范围选通的范围区域处的换能器阵列聚焦并用于扫描。 提供用于线段信号的视觉显示的视觉显示装置，用于可视化地显示要被成像的整个部分。 信号处理装置可以包括数字扫描转换器装置，用于临时存储用于在常规TV监视器上显示的接收信号。 不同数量的换能器元件用于不同范围区域的波束形成; 用于在距离换能器阵列最远的区域操作的相邻换能器元件的最大数量，以及用于靠近阵列的区域的数量减少。 电子束聚焦装置包括多个固定延迟装置，其中至少一些被用于在多个范围区域聚焦，从而最小化系统操作所需的总数。
-
公开(公告)号：US3982223A
公开(公告)日：1976-09-21
申请号：US270274
申请日：1972-07-10
申请人： Philip S. Green
发明人： Philip S. Green
IPC分类号： A61B17/225 , G10K11/30 , H04B13/00
CPC分类号： G10K11/30
摘要： Composite acoustic lens assemblies which are adapted for use in a fluid medium and utilized for forming acoustic images with incident acoustic waves or focusing incident acoustic waves are constructed utilizing two or more lens elements with a fluid filler medium contained therebetween. In order to reduce the radius of curvature of the lens elements to such an extent that mode conversion at liquid/solid interfaces is substantially eliminated while providing the required image or focusing, the materials of the lens medium and the liquid medium between the lens elements are selected so that the velocity of propagation of acoustic waves in the medium, at least on one side of the composite acoustic lens is intermediate the velocity of propagation of acoustic waves in the media of the lens elements and the fluid filler. In a preferred embodiment, lens elements are selected so that the velocity of propagation of acoustic waves therein is greater than the velocity of propagation of the acoustic waves in the wave transmitting medium surrounding the lens assembly and the lens filler medium is selected so that the velocity of propagation of acoustic waves is less than their velocity in the surrounding wave transmitting medium.
摘要翻译： 适用于流体介质并用于形成具有入射声波或聚焦入射声波的声像的复合声透镜组件利用两个或多个透镜元件构成，其间包含流体填充介质。 为了将透镜元件的曲率半径减小到在提供所需图像或聚焦的同时基本上消除液/固界面处的模式转换的程度，透镜介质和透镜元件之间的液体介质的材料是 使得在复合声透镜的至少一侧的介质中的声波的传播速度在透镜元件和流体填充物的介质中的声波的传播速度之间。 在优选实施例中，选择透镜元件使得其中的声波的传播速度大于围绕透镜组件的波发射介质中的声波的传播速度，并且选择透镜填充介质，使得速度 声波的传播小于其在周围波传播介质中的速度。
-
公开(公告)号：US3971962A
公开(公告)日：1976-07-27
申请号：US291002
申请日：1972-09-21
申请人： Philip S. Green
发明人： Philip S. Green
IPC分类号： G01N29/06 , A61B8/14 , B06B1/06 , G01H3/12 , G01N29/00 , G01N29/24 , G01N29/26 , G02B27/06 , G10K15/00 , H04R17/00 , H01L41/08
CPC分类号： G01H3/125
摘要： An ultrasonic transducer comprising a linear array of piezoelectric elements for converting a single line from a compressional acoustic image field to electrical impulses which, in turn, provide a means for converting the incident compressional image field to a visual representation. In order to match the configuration of the acoustic image field, the array of piezoelectric elements, in a preferred embodiment, has the configuration of an arc, that is, the array is arranged in a straight line in one plane and in an arc in a plane orthogonal to the first. The transducer is made up of a plurality of assemblies each of which is composed of segments of piezoelectric material each held in a supporting slot in a length of metal plate which slot is filled with a material selected to provide impedance matching between the piezoelectric material and the transmission medium. The array of piezoelectric elements is made from the piezoelectric segments by making fine cuts therein perpendicular to the supporting slot to form a plurality of piezoelectric "islands" and each island is electrically connected to utilization circuitry. In a preferred embodiment, an ultrasonic cylindrical lens is affixed to the supporting structure along the supporting slot and intermediate the piezoelectric array and the compressional acoustic image field to broaden the angular sensitivity pattern in the direction to compensate for the disparity between length and width (greater length) of piezoelectric elements or islands.
摘要翻译： 一种超声波换能器，包括用于将单线从压缩声像场转换为电脉冲的压电元件的线性阵列，其进而提供用于将入射的压缩图像场转换为视觉表示的装置。 为了匹配声像场的配置，在优选实施例中，压电元件阵列具有弧形的构造，即阵列在一个平面中以直线排列并且以弧形布置在 平面正交于第一。 传感器由多个组件组成，每个组件由压电材料的部分组成，每个压电材料被保持在金属板的长度的支撑槽中，该槽被选择用于提供压电材料和压电材料之间的阻抗匹配的材料 传输介质。 压电元件的阵列通过在其中垂直于支撑槽进行精细切割而由压电部件制成，以形成多个压电“岛”，并且每个岛电连接到利用电路。 在优选实施例中，超声波柱面透镜沿着支撑槽固定到支撑结构上，并且在压电阵列和压缩声像场之间被固定在支撑结构上，以在方向上扩大角度灵敏度图案以补偿长度和宽度之间的差异（更大 长度）的压电元件或岛。
-
-
-
-
搜索结果
55 条记录 (耗时 0.019 秒)
