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    METHOD AND SYSTEM FOR SHAPING A CMUT MEMBRANE
    1.
    发明申请
    METHOD AND SYSTEM FOR SHAPING A CMUT MEMBRANE 审中-公开
    用于形成CMUT膜的方法和系统

    公开(公告)号：US20120250454A1

    公开(公告)日：2012-10-04

    申请号：US13439537

    申请日：2012-04-04

    申请人： Robert Nicholas Rohling ,  Edmond Cretu ,  Wei You

    发明人： Robert Nicholas Rohling ,  Edmond Cretu ,  Wei You

    IPC分类号： G03B42/06 ,  H04B1/02 ,  B06B1/06

    CPC分类号： G01N29/0654 ,  B06B1/0292 ,  G01N29/2406 ,  G01N2291/02818 ,  G01N2291/02827 ,  G01N2291/044 ,  G10K11/35

    摘要： The present disclosure is directed at a method and system for shaping a membrane a capacitive micromachined ultrasonic transducer, or CMUT. A bias voltage is asymmetrically applied to a membrane of the CMUT such that the membrane is directed to send ultrasonic waves that propagate along a propagation axis that is not parallel with a propagation axis along which ultrasonic waves propagate when the bias voltage is symmetrically applied to the membrane. In this way, the ultrasonic waves that are generated using a CMUT array can be physically steered to or focused on a target. Steering and focusing ultrasonic waves by altering the shape of the membrane by asymmetrically biasing the membrane reduces grating lobes and can also be used as part of an adaptive control system that can improve ultrasound image quality.

    摘要翻译： 本公开涉及用于使电容微机械加工的超声换能器或CMUT的膜成形的方法和系统。 偏置电压被不对称地施加到CMUT的膜上，使得膜被引导发送超声波，该超声波沿着传播轴传播，传播轴与超声波传播的传播轴平行，当偏置电压对称地施加到 膜。 以这种方式，使用CMUT阵列产生的超声波可以被物理地导向或聚焦在目标上。 通过不对称地偏置膜来改变膜的形状来转向和聚焦超声波减少了光栅瓣，并且还可以用作可以改善超声图像质量的自适应控制系统的一部分。

    Spatio-Temporal Analysis for Automatic Contrast Injection Detection on Angiography During Trans-Catheter Aortic Valve Implantation
    2.
    发明申请
    Spatio-Temporal Analysis for Automatic Contrast Injection Detection on Angiography During Trans-Catheter Aortic Valve Implantation 有权
    跨导管主动脉瓣植入时血管造影自动对比注射检测的时空分析

    公开(公告)号：US20120134553A1

    公开(公告)日：2012-05-31

    申请号：US13283793

    申请日：2011-10-28

    申请人： Rui Liao ,  Michelle Xiaohong Yan ,  Wei You

    发明人： Rui Liao ,  Michelle Xiaohong Yan ,  Wei You

    IPC分类号： G06K9/00

    CPC分类号： G06T7/0016 ,  G06K2209/05 ,  G06T2207/10121 ,  G06T2207/30104

    摘要： A method that includes generating a contrast feature curve for a medical image sequence including a plurality of frames, where the contrast feature curve represents contrast feature values of the frames. The method further includes detecting a peak in the contrast feature curve, and determining whether the peak corresponds to at least one of contrast injection in an aortic root, contrast injection in a balloon, and a non-contrast injected region.

    摘要翻译： 一种方法，其包括生成包括多个帧的医学图像序列的对比度特征曲线，其中所述对比度特征曲线表示所述帧的对比特征值。 该方法还包括检测对比度特征曲线中的峰值，以及确定该峰值是否对应于主动脉根部中的对比度注入，气球中的对比度注入和非对比度注入区域中的至少一种。

    AUTOMATIC DETECTION OF CONTRAST INJECTION
    6.
    发明申请
    AUTOMATIC DETECTION OF CONTRAST INJECTION 有权
    自动检测对比度注射

    公开(公告)号：US20120128226A1

    公开(公告)日：2012-05-24

    申请号：US13211716

    申请日：2011-08-17

    申请人： Matthias John ,  Rui Liao ,  Michelle xiaohong Yan ,  Wei You

    发明人： Matthias John ,  Rui Liao ,  Michelle xiaohong Yan ,  Wei You

    IPC分类号： G06K9/00

    CPC分类号： G06T7/0014 ,  A61B6/481 ,  A61B6/487 ,  A61B6/504 ,  G06T2207/10121 ,  G06T2207/30048 ,  G06T2207/30101

    摘要： A method for automatically detecting the presence of contrast in an x-ray image includes acquiring an x-ray image prior to administration of contrast. A background image is estimated based on the x-ray image. The contrast is administered. A set of x-ray images is acquired. The background image is subtracted from the set of images. Image intensity is determined for each of the subtracted images. The subtracted images having highest image intensity are selected. A predefined shape model is fitted to the selected subtracted images. The fitting of the predefined shape model is used to fit the shape model to each of the subtracted images. A feature value is calculated for each image frame based on pixel intensities of each pixel fitted to the shape model for the corresponding subtracted image. An image frame of peak contrast is determined by selecting the image frame with the greatest feature value.

    摘要翻译： 用于自动检测x射线图像中的对比度的存在的方法包括在施加对比度之前获取X射线图像。 基于x射线图像估计背景图像。 对比度被管理。 获取一组X射线图像。 从图像集中减去背景图像。 确定每个减影图像的图像强度。 选择具有最高图像强度的减影图像。 预定义的形状模型适合于所选择的减影图像。 使用预定义形状模型的拟合来将形状模型拟合到每个相减图像。 基于适合于相应减法图像的形状模型的每个像素的像素强度，针对每个图像帧计算特征值。 通过选择具有最大特征值的图像帧来确定峰值对比度的图像帧。

    Automatic detection of contrast injection
    7.
    发明授权
    Automatic detection of contrast injection 有权
    自动检测造影剂注射

    公开(公告)号：US08655041B2

    公开(公告)日：2014-02-18

    申请号：US13211716

    申请日：2011-08-17

    申请人： Matthias John ,  Rui Liao ,  Michelle xiaohong Yan ,  Wei You

    发明人： Matthias John ,  Rui Liao ,  Michelle xiaohong Yan ,  Wei You

    IPC分类号： G06K9/00

    CPC分类号： G06T7/0014 ,  A61B6/481 ,  A61B6/487 ,  A61B6/504 ,  G06T2207/10121 ,  G06T2207/30048 ,  G06T2207/30101

    摘要： A method for automatically detecting the presence of contrast in an x-ray image includes acquiring an x-ray image prior to administration of contrast. A background image is estimated based on the x-ray image. The contrast is administered. A set of x-ray images is acquired. The background image is subtracted from the set of images. Image intensity is determined for each of the subtracted images. The subtracted images having highest image intensity are selected. A predefined shape model is fitted to the selected subtracted images. The fitting of the predefined shape model is used to fit the shape model to each of the subtracted images. A feature value is calculated for each image frame based on pixel intensities of each pixel fitted to the shape model for the corresponding subtracted image. An image frame of peak contrast is determined by selecting the image frame with the greatest feature value.

    摘要翻译： 用于自动检测x射线图像中的对比度的存在的方法包括在施加对比度之前获取X射线图像。 基于x射线图像估计背景图像。 对比度被管理。 获取一组X射线图像。 从图像集中减去背景图像。 确定每个减影图像的图像强度。 选择具有最高图像强度的减影图像。 预定义的形状模型适合于所选择的减影图像。 使用预定义形状模型的拟合来将形状模型拟合到每个相减图像。 基于适合于相应减法图像的形状模型的每个像素的像素强度，针对每个图像帧计算特征值。 通过选择具有最大特征值的图像帧来确定峰值对比度的图像帧。

    POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS
    8.
    发明申请
    POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS 有权
    聚合物与光子和电子应用的带状光束

    公开(公告)号：US20130092912A1

    公开(公告)日：2013-04-18

    申请号：US13701167

    申请日：2011-06-08

    申请人： Wei You

    发明人： Wei You

    IPC分类号： H01L51/00 ,  C08G75/32 ,  C07D285/14

    CPC分类号： H01L51/0036 ,  C07D285/14 ,  C08G61/123 ,  C08G61/126 ,  C08G75/32 ,  C08G2261/146 ,  C08G2261/3223 ,  C08G2261/3243 ,  C08G2261/3246 ,  C08G2261/414 ,  C08G2261/91

    摘要： The present invention provides, among other things, a copolymer comprising at least one donor monomer and at least one acceptor monomer. The polymer may optionally further comprise at least one additional comonomer. The polymers are useful as a charge-transport, semiconducting, electrochemical conducting, photoconducting, or light emitting material. Microelectronic devices comprising such polymers (e.g., as a heterojunction therein) are also described.

    摘要翻译： 本发明尤其提供包含至少一种供体单体和至少一种受体单体的共聚物。 聚合物可以任选地进一步包含至少一种另外的共聚单体。 该聚合物可用作电荷传输，半导体，电化学传导，光导或发光材料。 还描述了包含这种聚合物（例如，作为其中的异质结）的微电子器件。