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38 条记录 (耗时 0.026 秒)

    WIDE COVERAGE X-RAY TUBE AND CT SYSTEM
    31.
    发明申请
    WIDE COVERAGE X-RAY TUBE AND CT SYSTEM 审中-公开
    宽覆盖X射线管和CT系统

    公开(公告)号：US20100080357A1

    公开(公告)日：2010-04-01

    申请号：US12243610

    申请日：2008-10-01

    申请人： Jason Stuart Katcha ,  Thomas Louis Toth ,  Jiang Hsieh ,  Carey Shawn Rogers ,  John Scott Price ,  Baojun Li ,  Yun Zou

    发明人： Jason Stuart Katcha ,  Thomas Louis Toth ,  Jiang Hsieh ,  Carey Shawn Rogers ,  John Scott Price ,  Baojun Li ,  Yun Zou

    IPC分类号： H01J35/10 ,  H01J35/08

    CPC分类号： H01J35/10 ,  H01J2235/068 ,  H01J2235/086

    摘要： An x-ray tube is disclosed herein. The x-ray tube includes an anode assembly adapted to rotate generally about a rotational axis. The anode assembly includes a first target surface at least partially disposed at a first angle greater than 70 degrees with respect to the rotational axis and a second target surface at least partially disposed at a second angle greater than 70 degrees with respect to the rotational axis. The first target surface is adapted to emit a first x-ray beam and the second target surface is adapted to emit a second x-ray beam. A CT system is also disclosed.

    摘要翻译： 本文公开了一种X射线管。 X射线管包括适于大致围绕旋转轴线旋转的阳极组件。 阳极组件包括至少部分地以相对于旋转轴线大于70度的第一角度设置的第一目标表面和相对于旋转轴线以大于70度的第二角度至少部分地设置的第二目标表面。 第一目标表面适于发射第一x射线束，并且第二目标表面适于发射第二x射线束。 还公开了一种CT系统。

    Apparatus and method for z-location dependent x-ray beam filtration for imaging system
    32.
    发明授权
    Apparatus and method for z-location dependent x-ray beam filtration for imaging system 有权
    用于成像系统的z位置相关x射线束过滤的装置和方法

    公开(公告)号：US07649973B1

    公开(公告)日：2010-01-19

    申请号：US12244569

    申请日：2008-10-02

    申请人： Baojun Li ,  Thomas Louis Toth ,  Jiang Hsieh

    发明人： Baojun Li ,  Thomas Louis Toth ,  Jiang Hsieh

    IPC分类号： G01N23/083

    CPC分类号： G01N23/04 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/482 ,  A61B6/542 ,  G01N2223/313 ,  G01T1/2985

    摘要： An imaging system includes at least two x-ray sources, an x-ray detector assembly and an attenuation filter. The at least two x-ray sources are displaced along a z-axis and configured to alternately emit x-ray beams. The x-ray detector assembly is configured to detect the x-ray beams. The attenuation filter is mounted proximate the at least two x-ray sources and is configured to provide different amounts of x-ray attenuation to the x-ray beams along the z-axis.

    摘要翻译： 成像系统包括至少两个X射线源，X射线检测器组件和衰减滤波器。 所述至少两个x射线源沿Z轴移位并被配置为交替地发射x射线束。 x射线检测器组件被配置为检测x射线束。 所述衰减滤波器安装在所述至少两个x射线源附近，并且被配置为沿着z轴向x射线束提供不同量的X射线衰减。

    Systems and methods for reducing radiation dosage
    35.
    发明授权
    Systems and methods for reducing radiation dosage 失效
    降低辐射剂量的系统和方法

    公开(公告)号：US07254215B2

    公开(公告)日：2007-08-07

    申请号：US10695211

    申请日：2003-10-28

    申请人： Steven Gerard Ross ,  Thomas Louis Toth ,  Willi Walter Hampel ,  Bruce Matthew Dunham

    发明人： Steven Gerard Ross ,  Thomas Louis Toth ,  Willi Walter Hampel ,  Bruce Matthew Dunham

    IPC分类号： G21K1/04

    CPC分类号： G21K1/04

    摘要： An imaging system including is described. The imaging system includes a radiation source configured to generate a beam, a collimator configured to collimate the beam to generate a collimated beam, and a detector configured to detect the collimated beam. The collimator is one of a first collimator with a curved contour proportional to a contour of the detector, a second collimator with blades, where slopes of two oppositely-facing surfaces of at least one of the blades are different from each other, and a third collimator having at least two sets of plates, where the plates in a set pivot with respect to each other.

    摘要翻译： 描述了包括的成像系统。 成像系统包括被配置为产生光束的辐射源，被配置为准直光束以产生准直光束的准直器以及被配置为检测准直光束的检测器。 准直器是具有与检测器的轮廓成比例的弯曲轮廓的第一准直器之一，具有叶片的第二准直器，其中至少一个叶片的两个相对面的表面的斜面彼此不同，第三准直器 准直器具有至少两组板，其中一组中的板相对于彼此枢转。

    Methods and systems for helical overscan reduction
    36.
    发明授权
    Methods and systems for helical overscan reduction 有权
    用于螺旋过扫描减少的方法和系统

    公开(公告)号：US07113570B2

    公开(公告)日：2006-09-26

    申请号：US11053801

    申请日：2005-02-08

    申请人： Thomas Louis Toth ,  Brian James Grekowicz

    发明人： Thomas Louis Toth ,  Brian James Grekowicz

    IPC分类号： G21K1/04

    CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/06

    摘要： Methods, apparatus and systems for controlling x-ray exposure during a scan with a computed tomography system are provided. The system includes an x-ray source, a collimator, and a detector array. The collimator includes a first cam configured to shutter an x-ray fan beam, generated by the x-ray source, in a first direction, a second cam located on an opposite side of a focal point of the x-ray source from the first cam, the second cam configured to shutter the x-ray fan beam in a second direction, the second direction being opposite from the first direction, and a cam drive configured to position at least one of the first cam and the second cam during the scan.

    摘要翻译： 提供了一种用于使用计算机断层摄影系统在扫描期间控制x射线曝光的方法，装置和系统。 该系统包括x射线源，准直仪和检测器阵列。 该准直器包括：第一凸轮，其构造成用于在第一方向上遮挡由X射线源生成的X射线扇形束;第二凸轮，位于与该X射线源的第一方向相对的X射线源的焦点的相反侧 凸轮，所述第二凸轮被构造成沿着第二方向遮挡所述X射线扇形束，所述第二方向与所述第一方向相反;以及凸轮驱动器，其配置成在所述扫描期间定位所述第一凸轮和所述第二凸轮中的至少一个 。

    Methods and systems for determining x-ray beam position in multi-slice computed tomography scanners
    37.
    发明授权
    Methods and systems for determining x-ray beam position in multi-slice computed tomography scanners 失效
    用于确定多层计算机断层扫描仪中x射线束位置的方法和系统

    公开(公告)号：US06370218B1

    公开(公告)日：2002-04-09

    申请号：US08576066

    申请日：1995-12-21

    申请人： Thomas Louis Toth ,  Armin Horst Pfoh

    发明人： Thomas Louis Toth ,  Armin Horst Pfoh

    IPC分类号： A61B600

    CPC分类号： A61B6/032 ,  A61B6/4021 ,  A61B6/4085 ,  G01N23/046 ,  G01N2223/419 ,  H05G1/26

    摘要： Focal spot position determination systems having a high sensitivity to focal spot movement for use in connection with multi-slice computed tomography imaging systems are described. In one embodiment, the determination system is configured for application in a two slice system. Signals from adjacent detector cells in separate rows are compared to determine focal spot position. More particularly, the signal intensity A of the signal output by a first detector cell and the signal intensity B of the signal output by the second detector cell are related to the position of the focal spot. That is, the z position of the centerline of the fan beam can be determined by relating the signal intensities A and B according to the ratio [(A−B)/(A+B)]. Such ratio is representative of the beam location and can be used to control adjustment of the imaging system pre-patient collimator to maintain the beam in the desired position.

    摘要翻译： 描述了与多层计算机断层成像系统结合使用的对焦点运动具有高灵敏度的焦点位置确定系统。 在一个实施例中，确定系统被配置为在两个切片系统中应用。 比较来自相邻检测器单元在不同行中的信号以确定焦点位置。 更具体地，由第一检测器单元输出的信号的信号强度A和由第二检测器单元输出的信号的信号强度B与焦斑的位置有关。 也就是说，风扇光束的中心线的z位置可以通过根据[（A-B）/（A + B）]的比率与信号强度A和B相关来确定。 这种比率代表光束位置，并且可以用于控制成像系统病人前准直仪的调节，以将光束保持在期望的位置。

    Collimator for reducing patient x-ray dose
    38.
    发明授权
    Collimator for reducing patient x-ray dose 失效
    用于减少患者x射线剂量的准直仪

    公开(公告)号：US5644614A

    公开(公告)日：1997-07-01

    申请号：US576152

    申请日：1995-12-21

    申请人： Thomas Louis Toth ,  Willi Walter Hampel

    发明人： Thomas Louis Toth ,  Willi Walter Hampel

    IPC分类号： G21K1/02 ,  A61B6/03 ,  A61B6/06 ,  H05G1/26

    CPC分类号： A61B6/032 ,  A61B6/06 ,  H05G1/26

    摘要： The present invention, in one form, is a pre-patient collimator for reducing patient x-ray dose during a scan with a computed tomography system. The collimator has a contoured aperture for emitting a generally rectangular shaped x-ray fan beam. The fan beam approximates the rectangular shape of x-ray detectors which gather data for producing an image.

    摘要翻译： 本发明以一种形式是用于在用计算机断层摄影系统扫描期间减少患者x射线剂量的病人前准直仪。 准直器具有用于发射大致矩形X射线扇形光束的成形孔。 风扇光束近似于收集用于产生图像的数据的x射线检测器的矩形形状。