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34 条记录 (耗时 0.018 秒)

    Pulse oximeter
    1.
    外观设计
    Pulse oximeter 有权

    公开(公告)号：USD972731S1

    公开(公告)日：2022-12-13

    申请号：US29769430

    申请日：2021-02-05

    申请人： Hua Xie

    设计人： Hua Xie

    Shear wave velocity estimation using center of mass
    2.
    发明授权
    Shear wave velocity estimation using center of mass 有权

    公开(公告)号：US10390797B2

    公开(公告)日：2019-08-27

    申请号：US13995522

    申请日：2011-12-19

    申请人： Yan Shi ,  Hua Xie ,  Roy Peterson ,  Jean-Luc Robert ,  Vijay Shamdasani

    发明人： Yan Shi ,  Hua Xie ,  Roy Peterson ,  Jean-Luc Robert ,  Vijay Shamdasani

    IPC分类号： A61B5/00 ,  A61B8/00 ,  A61B8/08 ,  A61B5/055

    摘要： A device and a method for computing a weighted-average-based position of a shear wave in a temporal domain based on a sampling of shear wave displacements along a propagation path of the shear wave. The weighted-average-based position is, for example, by displacement observed at a plurality of times that correspond to sampling, and represents a time of arrival of the shear wave at a location being sampled along the propagation path. Further, times of arrival of the shear wave at respective locations along the propagation path are functionally related to known inter-location distances to derive shear-wave group velocity. The derived shear-wave group velocity serves as an input into algorithms for estimating a shear elasticity of a medium, such as a body tissue, for purposes of a clinical diagnosis and therapy assessment.

    SPATIALLY-FINE SHEAR WAVE DISPERSION ULTRASOUND VIBROMETRY SAMPLING
    4.
    发明申请
    SPATIALLY-FINE SHEAR WAVE DISPERSION ULTRASOUND VIBROMETRY SAMPLING 有权
    空间剪切波分散超声波采样

    公开(公告)号：US20120116220A1

    公开(公告)日：2012-05-10

    申请号：US13383471

    申请日：2010-06-23

    申请人： Michael R. Burcher ,  Hua Xie ,  Anna Teresa Fernandez ,  Jean-Luc Robert

    发明人： Michael R. Burcher ,  Hua Xie ,  Anna Teresa Fernandez ,  Jean-Luc Robert

    IPC分类号： A61B8/00

    CPC分类号： A61B8/00 ,  A61B5/0048 ,  A61B8/485 ,  G01S7/52042

    摘要： Shear wave dispersion ultrasound vibrometry (SDUV) is implemented in some embodiments to form, from a single tracking pulse, in-parallel-directed receive lines (411-426) for making measurements of a monochromatic shear wave. In some embodiments, sampling is performed, over spatial locations by means of passes over the locations, in an interlaced pattern (600) for making measurements of the wave. In some embodiments, measurements are made of the wave and to the measurements are applied a bank of filters (S724) that are tuned to respective candidate wave speeds, all without the need to determine a difference between wave phases at different spatial locations (451-454).

    摘要翻译： 在一些实施例中实施剪切波分散超声波振动测量（SDUV），以从单个跟踪脉冲形成用于进行单色剪切波的测量的并行导向的接收线（411-426）。 在一些实施例中，通过在位置上的通过在隔行扫描图案（600）中通过空间位置进行采样，以进行波的测量。 在一些实施例中，对波进行测量，并且将测量值应用于被调谐到各个候选波速的滤波器组（S724），全部不需要确定不同空间位置处的波相位之间的差（451- 454）。

    User preference techniques for support vector machines in content based image retrieval
    6.
    发明授权
    User preference techniques for support vector machines in content based image retrieval 失效
    基于内容的图像检索中支持向量机的用户偏好技术

    公开(公告)号：US07707132B2

    公开(公告)日：2010-04-27

    申请号：US11243501

    申请日：2005-10-03

    申请人： Hua Xie ,  Antonio Ortega

    发明人： Hua Xie ,  Antonio Ortega

    IPC分类号： G06N5/00

    CPC分类号： G06F17/30029 ,  G06F17/30038 ,  G06F17/30047 ,  G06K9/6253 ,  G06K9/6269

    摘要： Searching multimedia information which allows determining preferences based on very little amounts of data. The preferences are nonparametrically determined. Each preference is quantized into one of a plurality of bins. By doing the quantization, the distances between positive and negative samples are increased. The quantization amount may change depending on the number of samples which are used. The quantization can be used in a support vector machine or the like.

    摘要翻译： 搜索允许基于非常少量的数据来确定偏好的多媒体信息。 偏好是非参数确定的。 每个偏好被量化成多个箱体之一。 通过进行量化，正和负样本之间的距离增加。 量化量可以根据所使用的样本的数量而变化。 量化可以用在支持向量机等中。

    Discrete fourier transform (DFT) watermark
    7.
    发明授权
    Discrete fourier transform (DFT) watermark 有权
    离散傅里叶变换（DFT）水印

    公开(公告)号：US07376241B2

    公开(公告)日：2008-05-20

    申请号：US10635347

    申请日：2003-08-06

    申请人： Wensheng Zhou ,  Hua Xie

    发明人： Wensheng Zhou ,  Hua Xie

    IPC分类号： G06K9/00

    CPC分类号： G06T1/005 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04N1/3216 ,  H04N1/32187 ,  H04N7/162 ,  H04N7/1675 ,  H04N7/17318 ,  H04N21/234309 ,  H04N21/2347 ,  H04N21/2543 ,  H04N21/4405 ,  H04N21/44204 ,  H04N21/8358 ,  H04N2201/3233 ,  H04N2201/327

    摘要： A Discrete Fourier Transform watermark for use with digital images/video. A Y component of a Y, U(Cb), V(Cr) digital data stream representing color components of digital video is extracted as the digital data for embedding the watermark. The digital data is then scaled to a standard size. A Discrete Fourier Transform (DFT) is performed on the digital data, and a magnitude domain of the Discrete Fourier Transform is computed. The watermark is embedded into selected frequency bands of the computed magnitude domain of the Discrete Fourier Transform, thereby creating a watermarked magnitude domain. The selected frequency bands comprise one or more middle frequency bands, and the middle frequency bands comprise a band of circular rings of the magnitude domain. An inverse Discrete Fourier Transform is performed on the watermarked magnitude domain to reconstruct the digital data with the embedded watermark.

    摘要翻译： 用于数字图像/视频的离散傅里叶变换水印。 提取表示数字视频的颜色分量的Y，U（Cb），V（Cr）数字数据流的Y分量作为用于嵌入水印的数字数据。 然后将数字数据缩放到标准尺寸。 对数字数据进行离散傅里叶变换（DFT），并计算离散傅立叶变换的幅度域。 将水印嵌入到离散傅里叶变换的计算幅度域的选定频带中，从而创建水印幅度域。 所选择的频带包括一个或多个中频段，并且中频段包括幅度域的圆环带。 对水印幅度域进行逆离散傅里叶变换，以嵌入水印重构数字数据。

    Methods and systems for measuring mechanical property of a vascular wall and method and system for determining health of a vascular structure
    8.
    发明申请
    Methods and systems for measuring mechanical property of a vascular wall and method and system for determining health of a vascular structure 有权
    用于测量血管壁的机械性能的方法和系统，以及用于确定血管结构健康的方法和系统

    公开(公告)号：US20050124892A1

    公开(公告)日：2005-06-09

    申请号：US10731302

    申请日：2003-12-09

    申请人： William Weitzel ,  Kang Kim ,  Matthew O'Donnell ,  Jonathan Rubin ,  Hua Xie ,  Xunchang Chen

    发明人： William Weitzel ,  Kang Kim ,  Matthew O'Donnell ,  Jonathan Rubin ,  Hua Xie ,  Xunchang Chen

    IPC分类号： A61B8/08 ,  A61B8/06

    CPC分类号： A61B8/485 ,  A61B8/08

    摘要： Methods and systems for measuring mechanical property of a vascular wall and a method and system for determining health of a vascular structure are provided wherein local deformation of a vessel wall resulting from physiologic pressures with altered transmural forces is measured. A non-invasive free-hand ultrasound scanning-procedure was performed to apply external force, comparable to the force generated in measuring a subject's blood pressure, to achieve higher strains by equalizing the internal arterial baseline pressure. When the applied pressure matched the internal baseline diastolic pressure, strain and strain rate increased by a factor of 10 over a cardiac cycle. Radial arterial strain was assessed in the vessel wall over the entire deformation procedure using a phase-sensitive, two-dimensional speckle-tracking algorithm. An elastic modulus reconstruction procedure was developed to estimate the non-linear elastic properties of the vascular wall.

    摘要翻译： 提供了用于测量血管壁的机械性能的方法和系统以及用于确定血管结构健康的方法和系统，其中测量由具有改变的透壁力的生理压力引起的血管壁的局部变形。 进行非侵入性自由手超声扫描程序以施加外力，与测量受试者血压时产生的力相当，以通过平衡内部动脉基线压力来实现更高的应变。 当施加的压力与内部基线舒张压相匹配时，应变和应变率在心脏周期上增加10倍。 使用相敏二维斑点跟踪算法，在整个变形过程的血管壁中评估径向动脉应变。 开发弹性模量重建程序来估计血管壁的非线性弹性性质。

    Wound dressing devices and methods
    9.
    发明授权
    Wound dressing devices and methods 有权
    伤口敷料装置及方法

    公开(公告)号：US09205170B2

    公开(公告)日：2015-12-08

    申请号：US12387378

    申请日：2009-05-01

    申请人： Lisa Lucchesi ,  Hua Xie

    发明人： Lisa Lucchesi ,  Hua Xie

    IPC分类号： A61L15/28

    CPC分类号： A61L15/28 ,  C08L5/08

    摘要： The present invention provides an absorbent wound dressing assembly that can be used to stanch, seal, or stabilize a site of tissue injury, tissue trauma, or tissue access. The wound dressing assembly is flexible so that it can be adapted and used to fit in narrow and small wound sites. Generally the wound dressing assembly comprises a flexible carrier material that is impregnated with a non-mammalian material for control of severe bleeding. The preferred non-mammalian material is poly [β-(1→4)-2-amino-2-deoxy-D-glucopyranose] more commonly referred to as chitosan.

    摘要翻译： 本发明提供一种吸收性伤口敷料组件，其可用于对组织损伤，组织创伤或组织进入部位进行固定，密封或稳定。 伤口敷料组件是柔性的，使得它可以适应和用于适应狭窄和小的伤口部位。 伤口敷料组件通常包括用非哺乳动物材料浸渍以控制严重出血的柔性载体材料。 优选的非哺乳动物材料是通常被称为壳聚糖的聚[和（1→4）-2-氨基-2-脱氧-D-吡喃葡萄糖]。