Motion compensated reconstruction technique
    61.
    发明授权
    Motion compensated reconstruction technique 有权
    运动补偿重建技术

    公开(公告)号:US07599540B2

    公开(公告)日:2009-10-06

    申请号:US10560187

    申请日:2004-06-18

    申请人: Thomas Koehler

    发明人: Thomas Koehler

    CPC分类号: G06T11/006 G06T2211/412

    摘要: The long scan time in PET imaging may lead to a significant loss of resolution, due to patient or organ motion. According to the present invention, the distortion or motion may be compensated by performing a forward-projection, and/or back-projection of the intermediate image on the basis of a motion field describing a motion and/or distortion of the object of interest.

    摘要翻译: 由于患者或器官运动,PET成像中的长扫描时间可能导致明显的分辨率损失。 根据本发明,可以通过基于描述感兴趣对象的运动和/或失真的运动场来执行中间图像的前向投影和/或反投影来补偿失真或运动。

    Method and device for the iterative reconstruction of cardiac images
    62.
    发明授权
    Method and device for the iterative reconstruction of cardiac images 有权
    心脏图像重复重建的方法和装置

    公开(公告)号:US07596204B2

    公开(公告)日:2009-09-29

    申请号:US11908415

    申请日:2006-03-09

    IPC分类号: A61B6/00

    摘要: The invention relates to a method and a device for the iterative reconstruction of cross-sectional images of the heart (7) of a patient based on projections (P1, . . . P5) from different directions which are for example generated with a helical cone-beam CT scanner. A cardiac weight function (f) quantifies how near the projections (P1, . . . ) are to a given observation phase (To) of the heart cycle based on simultaneously recorded electrocardiographic signals (ECG). The whole set of projections (P1, . . . ) is divided into subsets (S1, . . . ) which each contain only projections corresponding to a similar cardiac weight (f), and an iterative reconstruction algorithm like ART uses in one update or iteration step all projections of such a subset (S1, . . . ) simultaneously.

    摘要翻译: 本发明涉及一种用于基于来自不同方向的投影(P1,...,P5)迭代重建患者心脏(7)的横截面图像的方法和装置,其例如用螺旋锥体 光束CT扫描仪。 心脏重量函数(f)基于同时记录的心电图信号(ECG)量化投影(P1,...)附近的心脏周期的给定观察阶段(To)附近。 整个投影组(P1 ...)分为子集(S1,...),每个子集只包含与相似的心脏重量(f)相对应的投影,像ART这样的迭代重建算法在一个更新或 迭代步骤同时对所述子集(S1,...)进行所有投影。

    METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR STORING EXTERNAL DEVICE RESULT DATA
    63.
    发明申请
    METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR STORING EXTERNAL DEVICE RESULT DATA 失效
    用于存储外部设备结果数据的方法,系统和计算机程序产品

    公开(公告)号:US20090216966A1

    公开(公告)日:2009-08-27

    申请号:US12036695

    申请日:2008-02-25

    IPC分类号: G06F12/02

    摘要: A method, system, and computer program product for storing result data from an external device. The method includes receiving the result data from the external device, the receiving at a system. The result data is stored into a store data buffer. The store data buffer is utilized by the system to contain store data normally generated by the system. A special store instruction is executed to store the result data into a memory on the system. The special store instruction includes a store address. The executing includes performing an address calculation of the store address based on provided instruction information, and updating a memory location at the store address with contents of the store data buffer utilizing a data path utilized by the system to store data normally generated by the system.

    摘要翻译: 一种用于从外部设备存储结果数据的方法,系统和计算机程序产品。 该方法包括从外部设备接收结果数据,在系统接收。 结果数据存储到存储数据缓冲区中。 存储数据缓冲器被系统用于包含通常由系统生成的存储数据。 执行特殊存储指令以将结果数据存储到系统中的存储器中。 特殊商店指令包括商店地址。 所述执行包括基于所提供的指示信息执行所述存储地址的地址计算,以及利用所述系统利用的用于存储由所述系统正常生成的数据的数据路径来更新所述存储数据缓冲器的存储位置。

    IMAGING SYSTEM
    64.
    发明申请
    IMAGING SYSTEM 有权
    成像系统

    公开(公告)号:US20090208077A1

    公开(公告)日:2009-08-20

    申请号:US12438559

    申请日:2007-08-28

    IPC分类号: G06K9/00 A61B6/03

    CPC分类号: A61B6/032 A61B6/027

    摘要: The present invention relates to an imaging system for imaging a field of interest, in particular to a computed tomography system. The imaging system comprises an irradiation unit (2) which moves relative to a field of interest along a first trajectory (501) and along a second trajectory (503). While the irradiation unit (2) moves along the first trajectory (501), first detection data are acquired and, while the irradiation unit (2) moves along the second trajectory (503), second detection data are acquired. An intermediate image of the field of interest is reconstructed from at least the second detection data, and virtual detection data are determined by forward projection through the intermediate image. Finally, an image of the field of interest is reconstructed from the first detection data and the virtual detection data.

    摘要翻译: 本发明涉及用于对感兴趣的领域,特别是计算机断层摄影系统进行成像的成像系统。 成像系统包括沿着第一轨迹(501)并沿第二轨迹(503)相对于感兴趣的场移动的照射单元(2)。 当照射单元(2)沿着第一轨迹(501)移动时,获取第一检测数据,并且当照射单元(2)沿着第二轨迹(503)移动时,获取第二检测数据。 至少从第二检测数据重建感兴趣区域的中间图像,并且通过中间图像的向前投影确定虚拟检测数据。 最后,从第一检测数据和虚拟检测数据重建感兴趣区域的图像。

    Method for Movement Compensation of Image Data
    65.
    发明申请
    Method for Movement Compensation of Image Data 审中-公开
    图像数据移动补偿方法

    公开(公告)号:US20080267455A1

    公开(公告)日:2008-10-30

    申请号:US12097568

    申请日:2006-12-11

    IPC分类号: G06K9/00

    摘要: According to an exemplary embodiment a method for movement compensation of image data of an object of interest comprises receiving projection data, receiving motion vector field data, and dividing the motion vector field data into a number of layers of motion vector field data. Furthermore, the method comprises generating motion compensated projection data by projecting at least one of the number of layered motion vector field data onto the projection data and applying a two dimensional motion compensation on the projection, and generating image data of at least one voxel by back-projecting the movement compensated projection data.

    摘要翻译: 根据示例性实施例,感兴趣对象的图像数据的移动补偿的方法包括接收投影数据,接收运动矢量场数据,以及将运动矢量场数据分成多个运动矢量场数据层。 此外,该方法包括通过将多个分层运动矢量场数据中的至少一个投影到投影数据上并在投影上应用二维运动补偿来生成运动补偿投影数据,并且通过返回生成至少一个体素的图像数据 - 投影运动补偿投影数据。

    Solid Polyvinyl Ester and Poly(Meth)Acrylate Resins with High Polydispersity
    66.
    发明申请
    Solid Polyvinyl Ester and Poly(Meth)Acrylate Resins with High Polydispersity 有权
    具有高分散性的固体聚乙烯酯和聚(甲基)丙烯酸酯树脂

    公开(公告)号:US20080262152A1

    公开(公告)日:2008-10-23

    申请号:US12096309

    申请日:2006-11-24

    申请人: Thomas Koehler

    发明人: Thomas Koehler

    IPC分类号: C08F118/04 C08L67/00

    CPC分类号: C08F218/04 C08F220/18

    摘要: Polyvinyl esters in the form of solid resins are obtained by free-radically initiated suspension polymerization, characterized in that the solid resin for a weight-average molecular weight Mw of

    摘要翻译: 固体树脂形式的聚乙烯酯通过自由引发的悬浮聚合获得,其特征在于重均分子量Mw <30万的固体树脂的多分散性PD> 5,对于重均分子量 重量Mw为30万至1,500,000,多分散性PD> 10。

    Spatially Resolved Oxymetry
    67.
    发明申请
    Spatially Resolved Oxymetry 有权
    空间解析氧化测定

    公开(公告)号:US20080242960A1

    公开(公告)日:2008-10-02

    申请号:US12066561

    申请日:2006-09-07

    摘要: In optical tomography, a calibration of the data may be necessary for image reconstruction. According to an exemplary embodiment of the present invention, the object of interest is used for calibration, wherein the image data is acquired during a highly oxygenated phase of the object of interest and wherein the calibration data is acquired during a low oxygenated phase of the object of interest. This may provide for an improved calibration, resulting in improved image quality.

    摘要翻译: 在光学层析成像中,图像重构可能需要校准数据。 根据本发明的示例性实施例,感兴趣的对象被用于校准,其中在感兴趣对象的高度充氧阶段期间获取图像数据,并且其中在对象的低氧合期期间获取校准数据 出于兴趣。 这可以提供改进的校准,导致改善的图像质量。

    Asymmetric csct
    69.
    发明申请
    Asymmetric csct 审中-公开
    不对称csct

    公开(公告)号:US20070127621A1

    公开(公告)日:2007-06-07

    申请号:US10575585

    申请日:2004-10-05

    IPC分类号: H05G1/60

    摘要: According to the present invention, an asymmetric acquisition system is used, where the radiation detector is arranged asymmetrically with respect to a fan beam plane of motor the scanner. Advantageously, this may allow to increase a scatter angle range for a given detector height in the direction of the rotational axis. Furthermore, this may allow for an optimal data flow for a combined volume absorption distribution reconstruction and subsequent coherent scatter CT reconstruction.

    摘要翻译: 根据本发明,使用非对称采集系统,其中辐射检测器相对于扫描器的电机的扇形光束平面不对称地布置。 有利地,这可以允许在旋转轴线的方向上增加给定检测器高度的散射角范围。 此外,这可以允许用于组合体积吸收分布重建和随后的相干散射CT重建的最佳数据流。

    Computerized tomography method with helical relative movement and conical beam
    70.
    发明申请
    Computerized tomography method with helical relative movement and conical beam 失效
    具有螺旋相对运动和锥形束的计算机断层扫描方法

    公开(公告)号:US20060233294A1

    公开(公告)日:2006-10-19

    申请号:US10546231

    申请日:2004-02-11

    摘要: The invention relates to a computerized tomography method, in which an examination area is scanned radiographically along a helical trajectory by a conical beam. The radiation transmitted through the examination area is measured by means of a detector unit, wherein the absorption distribution in the examination area is reconstructed exactly or at least quasi-exactly from these measured values. Reconstruction uses redundant measured values and comprises derivation of the measured values from parallel rays of different projections, integration of these values along κ-lines, weighting of these values and back-projection.

    摘要翻译: 本发明涉及一种计算机断层摄影方法,其中通过锥形光束沿着螺旋轨迹对X射线照相检查区域进行扫描。 透过检查区域的辐射通过检测器单元测量,其中检查区域中的吸收分布被准确地或至少准确地从这些测量值重建。 重建使用冗余测量值,包括从不同投影的平行光线导出测量值,这些值沿着kappa线的积分,这些值的加权和反投影。