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1. 发明申请

US20060133564A1 Method and apparatus for correcting motion in image reconstruction 有权
标题翻译：用于校正图像重建中运动的方法和装置
公开(公告)号：US20060133564A1
公开(公告)日：2006-06-22
申请号：US11018030
申请日：2004-12-21
申请人： David Langan , Peter Edic , Abdalmajeid Alyassin , Bernhard Claus , Joseph Manak , James Miller
发明人： David Langan , Peter Edic , Abdalmajeid Alyassin , Bernhard Claus , Joseph Manak , James Miller
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
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。

2. 发明授权

US07046759B2 Method and system for imaging a volume using a three-dimensional spiral scan trajectory 有权
标题翻译：使用三维螺旋扫描轨迹对体积成像的方法和系统
公开(公告)号：US07046759B2
公开(公告)日：2006-05-16
申请号：US10813100
申请日：2004-03-30
申请人： Abdulrahman Al-khalidy , Jeffrey Wayne Eberhard , Abdalmajeid Alyassin
发明人： Abdulrahman Al-khalidy , Jeffrey Wayne Eberhard , Abdalmajeid Alyassin
IPC分类号： A61B6/03
CPC分类号： A61B6/4429 , A61B6/025 , A61B6/027 , A61B6/4021 , A61B6/4233 , A61B6/466 , Y10S378/901
摘要： A technique is provided for improving the depth resolution of tomosynthesis images. The technique provides for the use of spiral scan trajectories. The X-ray source may moved along the spiral scan trajectory, acquiring projection data at various locations on the trajectory which are offset in the z-direction, i.e., in a direction perpendicular to the detector. Projection data acquired at different positions in the z-direction may be used to generate three-dimensional, tomosynthesis images having improved depth resolution.
摘要翻译：提供了一种提高断层图像深度分辨率的技术。该技术提供了螺旋扫描轨迹的使用。 X射线源可以沿着螺旋扫描轨迹移动，在轨迹上的各个位置获取在z方向偏移的方向即垂直于检测器的方向上的投影数据。在z方向的不同位置处获取的投影数据可用于产生具有改善的深度分辨率的三维，断层合成图像。

3. 发明申请

US20050226370A1 Method and system for imaging a volume using a three-dimensional spiral scan trajectory 有权
标题翻译：使用三维螺旋扫描轨迹对体积成像的方法和系统
公开(公告)号：US20050226370A1
公开(公告)日：2005-10-13
申请号：US10813100
申请日：2004-03-30
申请人： Abdulrahman Al-khalidy , Jeffrey Eberhard , Abdalmajeid Alyassin
发明人： Abdulrahman Al-khalidy , Jeffrey Eberhard , Abdalmajeid Alyassin
IPC分类号： A61B6/00 , A61B6/03 , A61B6/04 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： A61B6/4429 , A61B6/025 , A61B6/027 , A61B6/4021 , A61B6/4233 , A61B6/466 , Y10S378/901
摘要： A technique is provided for improving the depth resolution of tomosynthesis images. The technique provides for the use of spiral scan trajectories. The X-ray source may moved along the spiral scan trajectory, acquiring projection data at various locations on the trajectory which are offset in the z-direction, i.e., in a direction perpendicular to the detector. Projection data acquired at different positions in the z-direction may be used to generate three-dimensional, tomosynthesis images having improved depth resolution.
摘要翻译：提供了一种提高断层图像深度分辨率的技术。该技术提供了螺旋扫描轨迹的使用。 X射线源可以沿着螺旋扫描轨迹移动，在轨迹上的各个位置获取在z方向偏移的方向即垂直于检测器的方向上的投影数据。在z方向的不同位置处获取的投影数据可用于产生具有改善的深度分辨率的三维，断层合成图像。

4. 发明申请

US20060159318A1 Method, system and computer program product for multi-modality registration using virtual cursors 有权
标题翻译：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。

5. 发明申请

US20050074155A1 Method and system for unsupervised transfer function generation for images of rendered volumes 有权
标题翻译：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。

6. 发明授权

US07782998B2 Method and apparatus for correcting motion in image reconstruction 有权
标题翻译：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。

7. 发明申请

US20050133706A1 Method and system for three dimensional tomosynthesis imaging 有权
标题翻译：三维断层成像成像方法与系统
公开(公告)号：US20050133706A1
公开(公告)日：2005-06-23
申请号：US10739541
申请日：2003-12-18
申请人： Jeffrey Eberhard , Bernhard Claus , Abdulrahman Al-Khalidy , Abdalmajeid Alyassin , John Kaufhold , Gulnar Siddiqi
发明人： Jeffrey Eberhard , Bernhard Claus , Abdulrahman Al-Khalidy , Abdalmajeid Alyassin , John Kaufhold , Gulnar Siddiqi
IPC分类号： A61B6/00 , A61B6/02 , G06T11/00 , H01J3/14
CPC分类号： A61B6/4441 , A61B6/025 , A61B6/027
摘要： An imaging system for scanning a volume of interest in an object, the system includes a radiation source configured to traverse in a plurality of focal spot positions yielding a plurality of focal spot trajectories. Each focal spot trajectory defines a two dimensional focal spot projection in an image acquisition plane. Each of the focal spot positions comprise at least two positions at unequal distances from the image acquisition plane.
摘要翻译：一种用于扫描物体中的感兴趣体积的成像系统，所述系统包括被配置为在产生多个焦点轨迹的多个焦斑位置中移动的辐射源。每个焦点轨迹在图像采集平面中定义二维焦点投影。每个焦点位置包括与图像采集平面不等距离的至少两个位置。

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