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1. 发明授权

US07260170B2 Method and system of CT data correction 有权
公开(公告)号：US07260170B2
公开(公告)日：2007-08-21
申请号：US11627144
申请日：2007-01-25
申请人： Jerome Stephen Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno K. B. De Man , Samit Kumar Basu
发明人： Jerome Stephen Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno K. B. De Man , Samit Kumar Basu
IPC分类号： G01N23/00
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

2. 发明授权

US07260172B2 Method and system of CT data correction 有权
标题翻译： CT数据校正方法与系统
公开(公告)号：US07260172B2
公开(公告)日：2007-08-21
申请号：US11627072
申请日：2007-01-25
申请人： Jerome Stephen Arenson , Evgeny Drapkin , Yanfeng Du , Lev Greenberg , Oded Meirav , David Ruimi , John Eric Tkaczyk , Xiaoye Wu
发明人： Jerome Stephen Arenson , Evgeny Drapkin , Yanfeng Du , Lev Greenberg , Oded Meirav , David Ruimi , John Eric Tkaczyk , Xiaoye Wu
IPC分类号： G01N23/083
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.
摘要翻译：提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。数据采集技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。因此，本发明包括实现用于校正饱和CT检测器的其他不可用数据的多个CT数据校正技术。这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

3. 发明申请

US20070140409A1 METHOD AND SYSTEM OF CT DATA CORRECTION 有权
标题翻译： CT数据校正方法与系统
公开(公告)号：US20070140409A1
公开(公告)日：2007-06-21
申请号：US11627144
申请日：2007-01-25
申请人： Jerome Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno De Man , Samit Basu
发明人： Jerome Arenson , David Ruimi , Evgeny Drapkin , Dmitry Samsonov , Bruno De Man , Samit Basu
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.
摘要翻译：提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。数据采集技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。因此，本发明包括实现多个用于校正饱和CT检测器的不可用数据的CT数据校正技术。这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

4. 发明申请

US20060109950A1 METHOD AND SYSTEM OF CT DATA CORRECTION 有权
标题翻译： CT数据校正方法与系统
公开(公告)号：US20060109950A1
公开(公告)日：2006-05-25
申请号：US10904736
申请日：2004-11-24
申请人： Jerome Arenson , John Tkaczyk , David Ruimi , Oded Meirav , Evgeny Drapkin , Dmitry Samsonov , Lev Greenberg , Bruno De Man , Samit Basu , Xiaoye Wu , Yangeng Du
发明人： Jerome Arenson , John Tkaczyk , David Ruimi , Oded Meirav , Evgeny Drapkin , Dmitry Samsonov , Lev Greenberg , Bruno De Man , Samit Basu , Xiaoye Wu , Yangeng Du
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.
摘要翻译：提出了一种自适应CT数据采集系统和技术，其中动态地控制用于CT数据采集的辐射，以限制在给定数据采集期间可能特别容易饱和的CT检测器组件的那些检测器的暴露。数据采集技术认识到，对于给定的主体大小和位置，预辐射滤波和辐射束的准直可能不足以完全防止检测器饱和。因此，本发明包括实现用于校正饱和CT检测器的其他不可用数据的多个CT数据校正技术。这些数据校正技术包括最近邻校正，偏心幻像校正，偏心合成数据校正，侦察数据校正，平面放射线图校正以及其他数目。本发明适用于能量识别CT系统以及常规CT系统和其他多能CT系统，例如基于双kVp的系统。

5. 发明申请

US20070116173A1 METHOD AND SYSTEM OF CT DATA CORRECTION 有权
公开(公告)号：US20070116173A1
公开(公告)日：2007-05-24
申请号：US11627072
申请日：2007-01-25
申请人： Jerome Arenson , Evgeny Drapkin , Yanfeng Du , Lev Greenberg , Oded Meirav , David Ruimi , John Tkaczyk , Xiaoye Wu
发明人： Jerome Arenson , Evgeny Drapkin , Yanfeng Du , Lev Greenberg , Oded Meirav , David Ruimi , John Tkaczyk , Xiaoye Wu
IPC分类号： A61B6/00 , H05G1/60 , G01N23/00 , G21K1/12
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

6. 发明授权

US09020230B2 Method and apparatus for iterative reconstruction 有权
标题翻译：迭代重建的方法和装置
公开(公告)号：US09020230B2
公开(公告)日：2015-04-28
申请号：US13287589
申请日：2011-11-02
申请人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, Jr. , Ken David Sauer
发明人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, Jr. , Ken David Sauer
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , G06T2211/424 , G06T2211/428
摘要： A method for reconstructing an image of an object that includes a plurality of image elements. The method includes accessing image data associated with a plurality of image elements, and reconstructing an image of the object by optimizing an objective function, where the objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. The algorithm is composed of nested iterative loops, in which an inner loop iteratively optimizes an objective function approximating the outer loop objective function, and an outer loop that utilizes the solution of the inner loop to optimize the original objective function.
摘要翻译：一种用于重构包括多个图像元素的对象的图像的方法。该方法包括访问与多个图像元素相关联的图像数据，以及通过优化目标函数来重构对象的图像，其中通过迭代地求解近似优化问题的嵌套序列来优化目标函数。该算法由嵌套迭代循环组成，其中内循环迭代地优化近似外循环目标函数的目标函数，以及利用内循环的解来优化原始目标函数的外循环。

7. 发明申请

US20130108128A1 METHOD AND APPARATUS FOR ITERATIVE RECONSTRUCTION 有权
标题翻译：用于迭代重建的方法和装置
公开(公告)号：US20130108128A1
公开(公告)日：2013-05-02
申请号：US13287589
申请日：2011-11-02
申请人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, JR. , Ken David Sauer
发明人： Zhou Yu , Evgeny Drapkin , Bruno Kristiaan Bernard De Man , Jean-Baptiste Thibault , Kai Zeng , Jiang Hsieh , Brian Edward Nett , Debashish Pal , Lin Fu , Guangzhi Cao , Charles A. Bouman, JR. , Ken David Sauer
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/424 , G06T2211/428
摘要： A method for reconstructing an image of an object that includes a plurality of image elements. The method includes accessing image data associated with a plurality of image elements, and reconstructing an image of the object by optimizing an objective function, where the objective function is optimized by iteratively solving a nested sequence of approximate optimization problems. The algorithm is composed of nested iterative loops, in which an inner loop iteratively optimizes an objective function approximating the outer loop objective function, and an outer loop that utilizes the solution of the inner loop to optimize the original objective function.
摘要翻译：一种用于重构包括多个图像元素的对象的图像的方法。该方法包括访问与多个图像元素相关联的图像数据，以及通过优化目标函数来重构对象的图像，其中通过迭代地求解近似优化问题的嵌套序列来优化目标函数。该算法由嵌套迭代循环组成，其中内循环迭代地优化近似外循环目标函数的目标函数，以及利用内循环的解来优化原始目标函数的外循环。

8. 发明申请

US20090169085A1 METHOD AND APPARATUS FOR IMAGE RECONSTRUCTION USING DATA DECOMPOSITION FOR ALL OR PORTIONS OF THE PROCESSING FLOW 有权
标题翻译：用于使用数据分解处理流程的所有或部分的图像重建的方法和装置
公开(公告)号：US20090169085A1
公开(公告)日：2009-07-02
申请号：US12367627
申请日：2009-02-09
申请人： Roy Arnulf Nilsen , Evgeny Drapkin , Mary Sue Kulpins
发明人： Roy Arnulf Nilsen , Evgeny Drapkin , Mary Sue Kulpins
IPC分类号： G06K9/00 , G06K9/40
CPC分类号： A61B6/032 , A61B5/055 , A61B6/5247 , G01T1/1647 , G06T11/005
摘要： A method and apparatus for processing raw image data to create processed images. Raw image data is acquired. The raw image data is decomposed by a data decomposer into N subsets of raw image data. The number N is based on a number of available image generation processors. The N subsets of raw image data are processed by at least one image generation processor to create processed image data. If more than one image generation processor is available, the image generation processors perform image processing on the raw image data in parallel with respect to each other.
摘要翻译：一种用于处理原始图像数据以创建经处理的图像的方法和装置。获取原始图像数据。原始图像数据由数据分解器分解成原始图像数据的N个子集。数字N基于许多可用的图像生成处理器。原始图像数据的N个子集由至少一个图像生成处理器处理以创建经处理的图像数据。如果多于一个图像生成处理器可用，则图像生成处理器相对于彼此并行地对原始图像数据进行图像处理。

9. 发明授权

US06139498A Ultrasound system performing simultaneous parallel computer instructions 有权
标题翻译：超声系统执行同时并行计算机指令
公开(公告)号：US06139498A
公开(公告)日：2000-10-31
申请号：US222513
申请日：1998-12-29
申请人： Igor Katsman , Menachen Halmann , Evgeny Drapkin
发明人： Igor Katsman , Menachen Halmann , Evgeny Drapkin
IPC分类号： A61B8/14 , G01S7/52 , G01S15/89 , A61B8/00
CPC分类号： G01S15/8988 , G01S15/8979 , G01S15/899 , G01S7/52034 , G01S7/52071 , G01S7/52026 , G01S7/52044
摘要： An ultrasound system comprises a front end subsystem and a back end subsystem. The back end subsystem processes data samples representative of the echo signals from the front end subsystem. The back end subsystem includes at least one microprocessor with registers that simultaneously store at least two data samples. The microprocessor performs parallel common arithmetic or logic instructions upon at least two ultrasound data samples in one register. The microprocessor may be configured to scan convert polar data samples to Cartesian pixel values. During scan conversion, one register simultaneously stores multiple polar data samples and another register simultaneously stores coefficients associated with the polar data samples. The microprocessor multiplies corresponding data samples and coefficients, and sums the product of the parallel multiplication operations in order to produce a Cartesian data sample associated with a pixel to be displayed on an image arranged in a Cartesian coordinate pattern. The microprocessor may be configured to perform parallel arithmetic instructions to carry out auto-correlation operations, such as during Color Doppler signal processing. To do so, the registers store simultaneously multiple data samples representative of echo signals received from the same physical point from several transmissions. The registers each store the same data samples except that the data samples are shifted in the registers with respect to one another. During the parallel common arithmetic instructions, the microprocessor multiplies the data samples within the first and second registers and sums the products of the multiplication operations as part of an autocorrelation operation. The microprocessor may be reconfigured to perform blending operations two-dimensional greyscale images (B-mode) and Color Doppler images for a region of interest.
摘要翻译：超声系统包括前端子系统和后端子系统。后端子系统处理表示来自前端子系统的回波信号的数据样本。后端子系统包括至少一个具有同时存储至少两个数据样本的寄存器的微处理器。微处理器在一个寄存器中的至少两个超声数据样本上执行并行公共算术或逻辑指令。微处理器可以被配置为扫描将极坐标数据样本转换成笛卡尔像素值。在扫描转换期间，一个寄存器同时存储多个极数据样本，另一个寄存器同时存储与极数据样本相关联的系数。微处理器将相应的数据样本和系数相乘，并且将并行乘法运算的乘积相加，以产生与要以笛卡尔坐标图形排列的图像上显示的像素相关联的笛卡尔数据样本。微处理器可以被配置为执行并行算术指令以执行自相关操作，例如在彩色多普勒信号处理期间。为了这样做，寄存器同时存储表示从多个传输从相同物理点接收的回波信号的多个数据样本。寄存器各存储相同的数据样本，除了数据样本在寄存器中相对于彼此移位之外。在并行公共算术指令期间，微处理器将第一和第二寄存器内的数据样本相乘，并将乘法运算的乘积相加，作为自相关运算的一部分。微处理器可以被重新配置为对感兴趣的区域执行混合操作二维灰度图像（B模式）和彩色多普勒图像。

10. 发明授权

US06117078A Virtual volumetric phantom for ultrasound hands-on training system 有权
标题翻译：用于超声实验训练系统的虚拟体积体模
公开(公告)号：US06117078A
公开(公告)日：2000-09-12
申请号：US224651
申请日：1998-12-31
申请人： Peter Lysyansky , Evgeny Drapkin
发明人： Peter Lysyansky , Evgeny Drapkin
IPC分类号： G01S7/52 , G01S15/06 , G09B23/28 , A61B8/00 , G09B9/00
CPC分类号： G01S7/52036 , G01S15/06 , G09B23/286
摘要： A method and apparatus for providing a virtual volumetric ultrasound phantom to construct an ultrasound training system from any ultrasound system (hereafter "the ultrasound training system").The ultrasound system and method retrieve and display previously stored ultrasound data to simulate an ultrasound scanning session. A real ultrasound system acquires an image of an ultrasound phantom. The ultrasound image comprises ultrasound echo data for an image/scan plane representing a cross-section or partial volume of the ultrasound phantom. The ultrasound image is analyzed to identify image attributes that are unique for each image/scan plane. A portion of the previously stored data that corresponds to the image attributes is retrieved and displayed. In one embodiment, actual position and orientation of the acquired image/scan plane with respect to a known structure within the ultrasound phantom are determined by processing the image/scan plane to obtain a number of geometrical image parameters. Position and orientation of the image/scan plane are calculated from the image parameters using formulas based on a known three dimensional structure within the phantom. The determination of actual image/scan plane position and orientation may be enhanced using image de-correlation techniques. Retrieval of the stored data may be based upon the calculated position and orientation or on the obtained image parameters. In another embodiment of the present invention, relative changes in image/scan plane position and orientation with respect to an initial reference position and orientation are determined by processing successive acquired ultrasound images using image de-correlation techniques. In another embodiment of the present invention, the identity of each pixel or voxel within the image/scan plane is determined and a set of corresponding pixels or voxels of stored data are retrieved for display.
摘要翻译：一种用于提供虚拟体积超声体模以从任何超声系统（以下称为“超声训练系统”）构建超声训练系统的方法和装置。超声系统和方法检索和显示先前存储的超声数据以模拟超声扫描会话。真正的超声系统获取超声体模的图像。超声波图像包括表示超声体模的横截面或部分体积的图像/扫描平面的超声波回波数据。分析超声图像以识别对于每个图像/扫描平面是唯一的图像属性。检索并显示与图像属性对应的先前存储的数据的一部分。在一个实施例中，通过处理图像/扫描平面来确定所获取的图像/扫描平面相对于超声模型内的已知结构的实际位置和取向，以获得多个几何图像参数。图像/扫描平面的位置和方向根据图像参数使用基于模型中已知三维结构的公式计算。可以使用图像去相关技术来增强实际图像/扫描平面位置和取向的确定。所存储的数据的检索可以基于所计算的位置和取向或所获得的图像参数。在本发明的另一实施例中，通过使用图像去相关技术处理连续获取的超声图像来确定相对于初始参考位置和取向的图像/扫描平面位置和取向的相对变化。在本发明的另一个实施例中，确定图像/扫描平面内的每个像素或体素的身份，并且检索存储数据的一组相应的像素或体素以供显示。

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