Apparatus and method for image reconstruction for a synthetic aperture gamma ray imager
    1.
    发明授权
    Apparatus and method for image reconstruction for a synthetic aperture gamma ray imager 有权
    用于合成孔径伽马射线成像仪的图像重建的装置和方法

    公开(公告)号:US07663105B2

    公开(公告)日:2010-02-16

    申请号:US12331936

    申请日:2008-12-10

    IPC分类号: G01T1/00

    CPC分类号: G03B42/02

    摘要: An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.

    摘要翻译: 成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台。 成像系统包括被配置为在基线上获取多个远场数据集的计算机,所述多个远场数据集包括经由编码孔径成像装置接收的数据。 计算机还被配置为基于所获取的多个远场数据集形成初步图像,并将预期最大化(EM)算法应用于初步图像; 其中所述EM算法包括有序子集算法。

    APPARATUS AND METHOD FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER
    2.
    发明申请
    APPARATUS AND METHOD FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER 有权
    用于合成孔径伽马射线成像器的图像重建的装置和方法

    公开(公告)号:US20090296890A1

    公开(公告)日:2009-12-03

    申请号:US12331936

    申请日:2008-12-10

    IPC分类号: G03B42/02

    CPC分类号: G03B42/02

    摘要: An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.

    摘要翻译: 成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台。 成像系统包括被配置为在基线上获取多个远场数据集的计算机,所述多个远场数据集包括经由编码孔径成像装置接收的数据。 计算机还被配置为基于所获取的多个远场数据集形成初步图像,并将预期最大化(EM)算法应用于初步图像; 其中所述EM算法包括有序子集算法。

    COMPRESSION-DISTRACTION SPINAL FIXATION SYSTEM AND KIT
    6.
    发明申请
    COMPRESSION-DISTRACTION SPINAL FIXATION SYSTEM AND KIT 有权
    压缩分离脊柱固定系统和套件

    公开(公告)号:US20110319939A1

    公开(公告)日:2011-12-29

    申请号:US13176594

    申请日:2011-07-05

    IPC分类号: A61B17/70 A61B17/56

    摘要: Compression-distraction spinal fixation systems, and methods of performing compression-distraction spinal fixation, are provided that include screw-rod constructs having a ratcheting mechanism. Bone screws of the screw-rod constructs can have a pawl that engages ratchet teeth on the rod of the screw-rod construct. The bone screw can be unidirectionally ratcheted along the length of the rod to apply compressive or distractive forces. Tools for manipulation of the screw-rod constructs are also provided, which tools include distal tips configured to engage the bone screws.

    摘要翻译: 压缩牵引脊柱固定系统以及执行压缩牵引脊柱固定的方法被提供,其包括具有棘轮机构的螺杆结构。 螺杆结构的骨螺钉可以具有与螺杆结构的杆上的棘齿啮合的棘爪。 骨螺钉可以沿着杆的长度单向棘爪以施加压缩力或分心力。 还提供了用于操纵螺杆结构的工具,这些工具包括构造成接合骨螺钉的远侧末端。

    Device and method for treatment of spinal deformity
    9.
    发明申请
    Device and method for treatment of spinal deformity 有权
    治疗脊柱畸形的装置及方法

    公开(公告)号:US20080033436A1

    公开(公告)日:2008-02-07

    申请号:US11893173

    申请日:2007-08-16

    IPC分类号: A61B17/58

    摘要: The present invention generally relates to methods and devices for treatment of spinal deformity, and in particular to the utilization of at least one implant to either maintain the position of at least one vertebra of a patient to prevent increase in abnormal spinal curvature, to slow progression of abnormal curvature, or to impose at least one corrective displacement and/or rotation on at least one vertebra of a patient so as to incrementally correct abnormal spinal curvature.

    摘要翻译: 本发明总体上涉及用于治疗脊柱畸形的方法和装置,特别是涉及利用至少一种植入物来维持患者至少一个椎骨的位置,以防止增加异常的脊柱弯曲,减缓进展 或者在患者的至少一个椎骨上施加至少一个校正位移和/或旋转,以便逐渐校正异常的脊柱弯曲。