公开(公告)号：US5412703A

公开(公告)日：1995-05-02

申请号：US13589

申请日：1993-02-04

申请人： Davil J. Goodenough ,  Warren S. Edwards

发明人： Davil J. Goodenough ,  Warren S. Edwards

IPC分类号： G01N23/04 ,  G06T11/00 ,  G01N23/083

CPC分类号： G06T11/005 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  Y10S378/901

摘要： An apparatus for correcting an X-ray tomographic image is presented, where the tomographic image is created by measuring an X-ray transmission coefficient at each of a plurality of X-ray beam paths through an object to enable reconstructing a tomographic image of the object. There is a device for selecting a plurality of volume averaged voxels along at least one of the X-ray beam ray paths, and for placing contiguous volume averaged voxels in a run length of volume averaged voxels, to make a plurality of run lengths of volume averaged voxels. There is a device for dividing the plurality of run lengths of volume averaged voxels into a plurality of subslices. There is a device, responsive to the plurality of subslices and responsive to the plurality of run lengths of volume averaged voxels, for computing a corrected value of X-ray attenuation coefficient for the X-ray beam ray path. There is a device for reconstructing a correction image using the corrected X-ray attenuation coefficient for each X-ray beam ray path. Finally, there is a device for obtaining an improved image by combining the tomographic image with the correction image.

摘要翻译： 提出了一种用于校正X射线断层图像的装置，其中通过测量通过物体的多个X射线束路径中的每一个处的X射线透射系数来创建断层图像，以能够重构物体的断层图像 。 存在用于沿着X射线束射线路径中的至少一个选择多个体积平均体元并且用于将体积平均体素的游程长度中的连续体积平均体素设置为体积平均体素的游程长度的装置 平均体素。 存在用于将体积平均体素的多个游程长度分成多个子部分的装置。 存在响应于多个子部分并响应于体积平均体元的多个游程长度的装置，用于计算X射线束射线路径的X射线衰减系数的校正值。 存在用于使用针对每个X射线束射线路径的校正的X射线衰减系数来重建校正图像的装置。 最后，存在通过将断层图像与校正图像组合来获得改进图像的装置。

公开(公告)号：US20090138800A1

公开(公告)日：2009-05-28

申请号：US12140601

申请日：2008-06-17

申请人： Michael J. Anderson ,  George Kovacs ,  Martin L. Terry ,  Warren S. Edwards ,  Diana H. Chaytor

发明人： Michael J. Anderson ,  George Kovacs ,  Martin L. Terry ,  Warren S. Edwards ,  Diana H. Chaytor

IPC分类号： G06F3/041

CPC分类号： G06F3/04883 ,  G06F2203/04808

摘要： An apparatus is provided that includes a processor configured to receive data representative of points on a touch-sensitive surface with which an object comes into contact to initiate and carry out a trace or movement interaction with the surface. In this regard, the trace is defined by a shape formed by the points, and the movement interaction is defined by movement reflected by the points. The processor is configured to determine if the contact is initiated to carry out a trace or movement interaction based on the data. The contact is initiated to carry out a trace if contact of the object is made and the object is held substantially in place for a period of time, the determination being made. The processor is then configured to interpret the data based on the determination to thereby direct interaction with media presented on the corresponding display based on the interpretation.

摘要翻译： 提供了一种装置，其包括处理器，其被配置为接收表示与物体接触的触敏表面上的点的数据，以启动并执行与表面的迹线或运动交互。 在这方面，轨迹由点形成的形状定义，运动相互作用由点反射定义。 处理器被配置为确定联系人是否被启动以基于数据执行跟踪或移动交互。 开始接触以进行跟踪，如果进行物体的接触并且物体在一段时间内基本保持在适当位置，则进行确定。 然后，处理器被配置为基于确定来解释数据，从而基于解释来直接与呈现在对应显示器上的媒体的交互。

公开(公告)号：US06775404B1

公开(公告)日：2004-08-10

申请号：US09526656

申请日：2000-03-15

申请人： Niko Pagoulatos ,  David R. Haynor ,  Warren S. Edwards ,  Yongmin Kim

发明人： Niko Pagoulatos ,  David R. Haynor ,  Warren S. Edwards ,  Yongmin Kim

IPC分类号： G06K900

CPC分类号： G06T3/00 ,  A61B8/0816 ,  A61B8/4254 ,  A61B8/587 ,  G06T7/35 ,  G06T7/38 ,  Y10S128/916

摘要： Intraoperative ultrasound (US) is integrated with stereotactic systems, where a system interactively registers two-dimensional (2D) US and three-dimensional (3D) magnetic resonance (MR) images. The registration is based on tracking a US probe with a bC magnetic position sensor. A transformation algorithm is performed to transform coordinates of points between two different spaces, where MR and US image spaces are independently registered with the position sensor space and where coordinate points can be registered between the MR and US spaces. A calibration procedure can be performed, and a phantom can be used to determine and analyze registration errors. The registered MR images can reconstructed using either zero-order or first-order interpolation.

摘要翻译： 术中超声（US）与立体定向系统集成，其中系统交互注册二维（2D）美国和三维（3D）磁共振（MR）图像。 注册是基于使用bC磁位置传感器跟踪美国探头。 执行变换算法来转换两个不同空间之间的点的坐标，其中MR和US图像空间独立地与位置传感器空间对齐，并且可以在MR和US空间之间登记坐标点。 可以执行校准过程，并且可以使用幻像来确定和分析注册错误。 可以使用零级或一阶插值重建注册的MR图像。