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    • 1. 发明申请
    • Multi-dimensional ultrasound transducer array
    • 多维超声换能器阵列
    • US20060241468A1
    • 2006-10-26
    • US11051349
    • 2005-02-04
    • Xuan-Ming LuTimothy ProulxLewis ThomasWorth Walters
    • Xuan-Ming LuTimothy ProulxLewis ThomasWorth Walters
    • A61B8/14
    • B06B1/0622
    • In k31 mode, a vibration is along an axis or orthogonal to the poling or electric field orientation. The direction of vibration is toward a face of an ultrasound transducer array. For each element of the array, electrodes are formed perpendicular to the face of the array, such as along the sides of the elements. Piezoelectric material is poled along a dimension parallel with the face of the transducer and perpendicular to the direction of acoustic energy propagation. Using elements designed for k31 resonant mode operation may provide for a better electrical impedance match, such as where small elements sizes are provided for a multi-dimensional transducer arrays. For additional impedance matching, the elements may be made from multiple layers of piezoelectric ceramic. Since the elements operate from a k31 mode, the layers are stacked along the poling direction or perpendicular to a face of the transducer array for transmitting or receiving acoustical energy.
    • 在k31模式中,振动沿着轴线或正交于极化或电场取向。 振动的方向是朝向超声波换能器阵列的面。 对于阵列的每个元件,电极垂直于阵列的表面形成,例如沿着元件的侧面。 压电材料沿着与换能器的表面平行且垂直于声能传播方向的尺寸极化。 使用设计用于k 31谐振模式操作的元件可以提供更好的电阻抗匹配,例如为多维换能器阵列提供小元件尺寸的那些。 对于额外的阻抗匹配,元件可以由多层压电陶瓷制成。 由于这些元件从k 31模式操作,所以这些层沿着极化方向或者垂直于换能器阵列的面积堆叠以发射或接收声能。
    • 4. 发明申请
    • Coherence factor adaptive ultrasound imaging methods and systems
    • 相干因子自适应超声成像方法和系统
    • US20050228279A1
    • 2005-10-13
    • US10814959
    • 2004-03-31
    • Kutay UstunerPai-Chi LiMeng-Lin LiLewis ThomasAlbert Gee
    • Kutay UstunerPai-Chi LiMeng-Lin LiLewis ThomasAlbert Gee
    • A61B8/14G01S7/52
    • G01S15/8927G01S7/52049
    • Ultrasound imaging adapts as a function of a coherence factor. Various beamforming, image forming or image processing parameters are varied as a function of a coherence factor to improve detail resolution, contrast resolution, dynamic range or SNR. For example, a beamforming parameter such as the transmit or receive aperture size, apodization type or delay is selected to provide maximum coherence. Alternatively or additionally, an image forming parameter, such as the number of beams for coherent synthesis or incoherent compounding, is set as a function of the coherence factor. Alternatively or additionally an image processing parameter such as the dynamic range, linear or nonlinear video filter and/or linear or nonlinear map may also adapt as a function of the coherence factor.
    • 超声成像适应相干因子的函数。 各种波束成形,图像形成或图像处理参数作为相干因子的函数而变化,以提高细节分辨率,对比度分辨率,动态范围或SNR。 例如,选择诸如发射或接收孔径大小,变迹类型或延迟的波束形成参数以提供最大相干性。 或者或另外,将诸如用于相干合成或非相干复合的光束的数量的图像形成参数设置为相干因子的函数。 替代地或附加地,诸如动态范围,线性或非线性视频滤波器和/或线性或非线性映射的图像处理参数也可以作为相干因子的函数来适应。
    • 5. 发明申请
    • Aberration correction with broad transmit beams in medical ultrasound
    • 医学超声波中广泛发射光束的畸变校正
    • US20060241429A1
    • 2006-10-26
    • US11099802
    • 2005-04-05
    • Kutay UstunerLewis ThomasD-L Liu
    • Kutay UstunerLewis ThomasD-L Liu
    • A61B8/00
    • G01S7/52049G01S7/52046G01S7/52085G01S7/5209G01S15/8915G01S15/8925G01S15/8959G01S15/8993G01S15/8997G10K11/346
    • Aberration estimation uses cross correlation of receive-focused transmit element data. A set of sequentially fired broad transmit beams insonify an object from different steering angles. Each transmit beam emanates from an actual or a virtual transmit element. For every firing, a receive beamformer forms a transmit element image of the insonified region by focusing the received signals. An estimator estimates aberration by cross correlating or comparing the transmit element images. Where a virtual transmit element is used, the virtual transmit element images are back propagated to an actual transmit element position before aberration estimation. The estimations are used to form corrected transmit element images which are then summed pre-detection to form a high-resolution synthetic transmit aperture. Alternatively, the estimations are used to improve conventional focused-transmit imaging.
    • 畸变估计使用接收发射单元数据的互相关。 一组顺序发射的宽发射光束使不同转向角的物体失真。 每个发射波束从实际或虚拟发射元件发出。 对于每次触发,接收波束形成器通过聚焦接收到的信号来形成声音区域的发射元件图像。 估计器通过交叉相关或比较发射元件图像来估计像差。 在使用虚拟发射元件的情况下,虚拟发射元件图像在像差估计之前被反向传播到实际发射元件位置。 这些估计用于形成经校正的发射元素图像,然后将它们相加预检测以形成高分辨率合成发射孔径。 或者,估计用于改进传统的聚焦传输成像。
    • 8. 发明申请
    • Coherence factor adaptive ultrasound imaging
    • 相干因子自适应超声成像
    • US20060173313A1
    • 2006-08-03
    • US11046347
    • 2005-01-27
    • D-L LiuLewis ThomasKutay UstunerCharles BradleyJohn Lazenby
    • D-L LiuLewis ThomasKutay UstunerCharles BradleyJohn Lazenby
    • A61B8/00
    • G01S7/52046G01S15/8993
    • A set of N×M signals are acquired from an object, where N is the number of array elements and M corresponds to variations in data acquisition and/or processing parameters. The parameters include transmit aperture functions, transmit waveforms, receive aperture functions, and receive filtering functions in space and/or time. A coherence factor is computed as a ratio of the energy of the coherent sum to the energy of the at-least-partially incoherent sum of channel or image signals acquired with at least one different parameter. Partial beamformed data may be used for channel coherence calculation. For image domain coherence, a component image is formed for each different transmit beam or receive aperture function, and a coherence factor image is computed using the set of component images. The coherence factor image is displayed or used to modify or blend other images formed of the same region.
    • 从对象获取一组NxM信号,其中N是数组元素的数量,M对应于数据采集和/或处理参数中的变化。 这些参数包括发射孔径功能,发射波形,接收孔径功能,以及在空间和/或时间中接收滤波功能。 相干因子被计算为用至少一个不同参数获取的信道或图像信号的至少部分非相干和的相干和的能量与能量的比率。 部分波束形成数据可用于通道相干计算。 对于图像域相干性,为每个不同的发射波束或接收孔径函数形成分量图像,并且使用该组分量图像来计算相干因子图像。 相干因子图像被显示或用于修改或混合由相同区域形成的其他图像。
    • 9. 发明申请
    • Method and system for displaying and/or manipulating medical image data
    • 用于显示和/或操纵医学图像数据的方法和系统
    • US20050074157A1
    • 2005-04-07
    • US10666604
    • 2003-09-19
    • Lewis Thomas
    • Lewis Thomas
    • G06F19/00G06K9/00G06K9/54G06K9/60G06F17/60
    • A61B8/461G06F19/00G06F19/321G06Q50/24
    • In one embodiment, a medical image viewer in compliance with a medical image standard is provided, and a file in compliance with the medical image standard is provided to the medical image viewer. The medical image standard specifies a first field for data not in compliance with the medical image standard and a second field for data in compliance with the medical image standard. The first field of the file comprises medical image data, and the second field of the file comprises information that can be used to obtain software to at least one of display and manipulate the medical image data. The software is obtained, and at least one of the following is performed with the software: displaying the medical image data and manipulating the medical image data. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.
    • 在一个实施例中,提供符合医学图像标准的医学图像查看器,并且向医学图像查看器提供符合医学图像标准的文件。 医学图像标准指定用于不符合医学图像标准的数据的第一字段,以及符合医学图像标准的数据的第二字段。 文件的第一字段包括医学图像数据,并且文件的第二字段包括可以用于获得软件的信息,以显示和操纵医学图像数据中的至少一个。 获得软件,并且使用软件执行以下中的至少一个:显示医学图像数据和操纵医学图像数据。 提供了其它实施例,并且本文所述的每个实施例可以单独使用或彼此组合使用。