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    • 1. 发明授权
    • Line-based calibration of ultrasound transducer integrated with a pose sensor
    • 与姿态传感器集成的超声波换能器的基于线路的校准
    • US07677078B2
    • 2010-03-16
    • US11649391
    • 2007-01-03
    • Frank SauerAli KhameneOliver KutterSebastian Kassner
    • Frank SauerAli KhameneOliver KutterSebastian Kassner
    • G01M1/14
    • A61B8/12A61B5/062A61B8/0833A61B8/4254A61B8/483A61B8/587B33Y80/00
    • Apparatus for calibrating an ultrasound transducer providing B-scans for two-dimensional (2D) images, includes: an ultrasound probe for providing B-scans; a position sensing device, the position sensing device being attached to the ultrasound probe and operating as part of a position sensing system in cooperation with a fixed sensing control unit, for labeling the B-scans with their respective relative positions and orientations (pose); a phantom marker for being imaged by the ultrasound probe for providing measurements which together with known physical properties of the phantom marker are used to derive calibration information for relating measurement data from the position sensing device to the poses of the B-scans to construct a 3D image; and the phantom marker comprising an encoded line object with distinctive calibration characteristics indicative of position along the line object, wherein the line object is disposed in a generally circumferential manner about a common axis with the probe.
    • 用于校准提供二维(2D)图像的B扫描的超声换能器的装置包括:用于提供B扫描的超声探头; 位置感测装置,所述位置感测装置附接到所述超声波探头,并且作为与固定感测控制单元协作的位置感测系统的一部分进行操作,用于以它们各自的相对位置和取向(姿势)标记B扫描; 用于由超声波探头成像的用于提供测量的幻影标记,其与模拟标记的已知物理特性一起用于导出校准信息,用于将来自位置感测装置的测量数据与B扫描的姿态相关联以构建3D 图片; 并且所述假想标记包括具有指示沿着所述线对象的位置的独特校准特性的编码线对象,其中所述线对象以围绕所述探针的公共轴线大致圆周方式设置。
    • 2. 发明申请
    • Line-based calibration of ultrasound transducer integrated with a pose sensor
    • 与姿态传感器集成的超声波换能器的基于线路的校准
    • US20080287787A1
    • 2008-11-20
    • US11649391
    • 2007-01-03
    • Frank SauerAli KhameneOliver KutterSebastian Kassner
    • Frank SauerAli KhameneOliver KutterSebastian Kassner
    • A61B8/13
    • A61B8/12A61B5/062A61B8/0833A61B8/4254A61B8/483A61B8/587B33Y80/00
    • Apparatus for calibrating an ultrasound transducer providing B-scans for two-dimensional (2D) images, includes: an ultrasound probe for providing B-scans; a position sensing device, the position sensing device being attached to the ultrasound probe and operating as part of a position sensing system in cooperation with a fixed sensing control unit, for labeling the B-scans with their respective relative positions and orientations (pose); a phantom marker for being imaged by the ultrasound probe for providing measurements which together with known physical properties of the phantom marker are used to derive calibration information for relating measurement data from the position sensing device to the poses of the B-scans to construct a 3D image; and the phantom marker comprising an encoded line object with distinctive calibration characteristics indicative of position along the line object, wherein the line object is disposed in a generally circumferential manner about a common axis with the probe.
    • 用于校准提供二维(2D)图像的B扫描的超声换能器的装置包括:用于提供B扫描的超声探头; 位置感测装置,所述位置感测装置附接到所述超声波探头,并且作为与固定感测控制单元协作的位置感测系统的一部分进行操作,用于以它们各自的相对位置和取向(姿势)标记B扫描; 用于由超声波探头成像的用于提供测量的幻影标记,其与模拟标记的已知物理特性一起用于导出校准信息,用于将来自位置感测装置的测量数据与B扫描的姿态相关联以构建3D 图片; 并且所述假想标记包括具有指示沿着所述线对象的位置的独特校准特性的编码线对象,其中所述线对象以围绕所述探针的公共轴线大致圆周方式设置。
    • 9. 发明申请
    • Fast generation of digitally reconstructed radiographs
    • 快速生成数字重建的X光片
    • US20070230764A1
    • 2007-10-04
    • US10951167
    • 2004-09-27
    • Ali KhameneFrank Sauer
    • Ali KhameneFrank Sauer
    • G06K9/00
    • G06T15/08G06T2210/41
    • A system and corresponding method for fast generation of digitally reconstructed radiograph (DRR) images are provided, the system including a processor, an imaging adapter in signal communication with the processor for receiving volumetric data, a preprocessing unit in signal communication with the processor for preprocessing subvolumes into a set of local line integrals, and an online processing unit in signal communication with the processor for online processing global line integrals, each from a set of local line integrals, respectively; and the corresponding method including receiving three-dimensional volumetric data, subdividing the volumetric data into a set of overlapping subvolumes, preprocessing each subvolume into a dense set of local line integrals at several angles and positions, online processing global line integrals, each from a set of local line integrals, respectively, and adding up values of the set of local line integrals for each global line integral to form pixels of the DRR image.
    • 提供了用于快速生成数字重建X射线照片(DRR)图像的系统和相应方法,该系统包括处理器,与处理器进行信号通信的成像适配器,用于接收体积数据,与处理器进行信号通信的预处理单元,用于预处理 子体积成一组局部线积分,以及与处理器进行信号通信的在线处理单元,用于在线处理全局线积分,分别来自一组局部线积分; 以及相应的方法,包括接收三维体积数据,将体数据细分为一组重叠的子体积,将每个子体积在几个角度和位置处预处理成一组密集的局部线积分,在线处理全局线积分,每一个集合 的本地线积分,并且将每个全局线积分的局部线积分的集合的值相加以形成DRR图像的像素。
    • 10. 发明申请
    • Tree structure based 2D to 3D registration
    • 基于树结构的2D到3D注册
    • US20060188139A1
    • 2006-08-24
    • US11303564
    • 2005-12-16
    • Ali KhameneCharles FlorinFrank SauerJames Williams
    • Ali KhameneCharles FlorinFrank SauerJames Williams
    • G06K9/00
    • G06K9/00208G06K2009/00932G06K2209/05
    • A system and method for tree structure based two-dimensional to three-dimensional registration are provided for receiving three-dimensional (3D) data indicative of vessels, segmenting the 3D data with a vessel tree, simulating two-dimensional (2D) data responsive to the segmented 3D data to form a simulated 2D image, receiving 2D data indicative of vessels, segmenting the received 2D data with a vessel tree, finding a distance transform of the segmented 2D data to form a 2D distance map image, considering a set of poses as state vectors with the corresponding probability computed using the similarity measure computation, re-sampling the pose vector to find a set of most probable poses and considering them as hypothesized poses, recomputing the projection and re-evaluating the probability of the hypothesized poses and updating the state vector until the optimal pose is found.
    • 提供了一种用于基于树结构的二维至三维配准的系统和方法,用于接收指示血管的三维(3D)数据,用血管树分割3D数据,模拟二维(2D)数据,响应于 分割的3D数据以形成模拟2D图像,接收指示血管的2D数据,用血管树分割接收的2D数据,找到分割的2D数据的距离变换以形成2D距离图图像,考虑一组姿势 作为具有使用相似度测量计算计算的相应概率的状态向量,重新采样姿态向量以找到一组最可能的姿势并将其视为假设姿势,重新计算投影并重新估计假设姿势的概率和更新 状态矢量,直到找到最佳姿势。