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    Method, system and computer program product for multi-modality registration using virtual cursors
    4.
    发明申请
    Method, system and computer program product for multi-modality registration using virtual cursors 有权
    使用虚拟光标进行多模态注册的方法，系统和计算机程序产品

    公开(公告)号：US20060159318A1

    公开(公告)日：2006-07-20

    申请号：US10722640

    申请日：2003-11-26

    申请人： Abdalmajeid Alyassin ,  Ajay Kapur

    发明人： Abdalmajeid Alyassin ,  Ajay Kapur

    IPC分类号： G06K9/00

    CPC分类号： G06T7/38 ,  A61B8/00 ,  A61B8/0816 ,  G06T2207/30068

    摘要： A method for multi-modality registration using virtual cursors including receiving a two-dimensional image dataset for an object at a first position and receiving a three-dimensional image dataset for the object at the first position. The three-dimensional image dataset includes a plurality of image slices. The two-dimensional image dataset is registered with the three-dimensional image dataset without taking into account a magnification factor. A user cursor position for a location in the two-dimensional image dataset is received. A slice of interest in the three-dimensional image dataset is received. The slice of interest is selected from the plurality of image slices in the three-dimensional image dataset. A shadow cursor position for a location in the three dimensional dataset is calculated. The shadow cursor position corresponds to the user cursor position and the calculating includes a correction for the magnification factor corresponding to the shadow cursor position for the slice of interest. The shadow cursor position is output.

    摘要翻译： 一种用于使用虚拟光标进行多模态注册的方法，包括在第一位置接收对象的二维图像数据集，并在第一位置接收对象的三维图像数据集。 三维图像数据集包括多个图像切片。 二维图像数据集在三维图像数据集中注册，而不考虑放大因子。 接收二维图像数据集中位置的用户光标位置。 接收三维图像数据集中感兴趣的切片。 感兴趣的切片从三维图像数据集中的多个图像切片中选择。 计算三维数据集中位置的阴影光标位置。 阴影光标位置对应于用户光标位置，并且计算包括对应于感兴趣切片的阴影光标位置的放大系数的校正。 输出阴影光标位置。

    Method and system for unsupervised transfer function generation for images of rendered volumes
    5.
    发明申请
    Method and system for unsupervised transfer function generation for images of rendered volumes 有权
    用于渲染卷图像的无监督传递函数生成的方法和系统

    公开(公告)号：US20050074155A1

    公开(公告)日：2005-04-07

    申请号：US09682157

    申请日：2001-07-27

    申请人： Abdalmajeid Alyassin

    发明人： Abdalmajeid Alyassin

    IPC分类号： G01R33/54 ,  A61B5/055 ,  A61B6/00 ,  A61B6/02 ,  A61B6/03 ,  A61B8/00 ,  G06T5/00 ,  G06T15/08 ,  G06K9/00

    CPC分类号： G06T5/007 ,  G06T11/008 ,  G06T15/08 ,  G06T2207/10081

    摘要： A method and system are provided for generating transfer functions for use in volume rendering of three-dimensional data of an object volume. The method comprises obtaining the three-dimensional data of the object volume, evaluating selected characteristics for a plurality of samples of the three-dimensional data and computing a transfer function range for volume rendering the three-dimensional data based on the selected characteristics. The system comprises an imaging device and an image processing device. The image processing device is adapted to generate at least one three-dimensional image data set of the object volume based on obtained image data and is further adapted to compute a transfer function range for use in volume rendering.

    摘要翻译： 提供了一种方法和系统，用于产生用于对象体积的三维数据的体绘制中的传递函数。 该方法包括：获得对象卷的三维数据，评估三维数据的多个样本的选定特征，以及基于所选择的特征，计算用于体绘制三维数据的传递函数范围。 该系统包括成像装置和图像处理装置。 图像处理装置适于基于获得的图像数据生成对象卷的至少一个三维图像数据集，并且还适于计算用于体绘制的传递函数范围。

    Method and apparatus for correcting motion in image reconstruction
    6.
    发明授权
    Method and apparatus for correcting motion in image reconstruction 有权
    用于校正图像重建中运动的方法和装置

    公开(公告)号：US07782998B2

    公开(公告)日：2010-08-24

    申请号：US11018030

    申请日：2004-12-21

    申请人： David Langan ,  Peter Edic ,  Abdalmajeid Alyassin ,  Bernhard Claus ,  Joseph Manak ,  James V. Miller

    发明人： David Langan ,  Peter Edic ,  Abdalmajeid Alyassin ,  Bernhard Claus ,  Joseph Manak ,  James V. Miller

    IPC分类号： A61B6/00

    CPC分类号： G06T11/005 ,  A61B6/5258 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T7/20 ,  G06T2211/412 ,  G06T2211/436

    摘要： A plurality of projection images are acquired over an angular range during the slow rotation of a C-arm gantry having a source and detector. Phase-specific reconstructions are generated from the plurality of projections, wherein each phase-specific reconstruction is generated generally from projections acquired at or near the respective phase. In one embodiment, a plurality of motion estimates are generated based upon the phase-specific reconstructions. One or more motion-corrected reconstructions may be generated using the respective motion estimates and projections. The motion-corrected reconstructions may be associated to form motion-corrected volume renderings.

    摘要翻译： 在具有源和检测器的C臂架的慢旋转期间，在角度范围内获取多个投影图像。 从多个投影产生相位特定的重建，其中每个相位特定的重建通常来自于在各个相位处或附近获取的投影。 在一个实施例中，基于相位特定重建产生多个运动估计。 可以使用相应的运动估计和投影来生成一个或多个运动校正重建。 可以将运动校正的重建相关联以形成运动校正的体积渲染。