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    Methods and apparatus for calibrating CT X-ray beam tracking loop
    3.
    发明申请
    Methods and apparatus for calibrating CT X-ray beam tracking loop 失效
    用于校准CT X射线束追踪回路的方法和装置

    公开(公告)号：US20060251210A1

    公开(公告)日：2006-11-09

    申请号：US11124331

    申请日：2005-05-06

    申请人： Edward Henry Chao ,  Thomas Louis Toth ,  Maryam Shaukat Hameed

    发明人： Edward Henry Chao ,  Thomas Louis Toth ,  Maryam Shaukat Hameed

    IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

    CPC分类号： A61B6/585 ,  A61B6/4275

    摘要： A method for determining tracking control parameters for positioning an x-ray beam of a computed tomography imaging system, the imaging system including a movable collimator positionable in steps and a detector array including a plurality of detector elements arranged in rows and channels, the rows extending from a detector A-side to a detector B-side. The method includes determining a detector A-side and a detector B-side target beam penumbra position, computing a plurality of Z-ratio curves corresponding to different detector rows and detector channels, and comparing the Z-ratio curves at the detector A-side and detector B-side target beam positions to determine the optimal Z-ratio curve and corresponding detector channels and rows for controlling the X-ray beam positioning.

    摘要翻译： 一种用于确定用于定位计算机断层摄影成像系统的x射线束的跟踪控制参数的方法，所述成像系统包括可定位成可移动的准直器和包括排列成行和通道的多个检测器元件的检测器阵列，所述行延伸 从检测器A侧到检测器B侧。 该方法包括确定检测器A侧和检测器B侧目标束半影位置，计算对应于不同检测器行和检测器通道的多个Z比曲线，以及比较检测器A侧的Z比曲线 和检测器B侧目标光束位置，以确定最佳Z比率曲线以及用于控制X射线束定位的相应检测器通道和行。

    Computed tomography dose indexing phantom selection for dose reporting
    4.
    发明授权
    Computed tomography dose indexing phantom selection for dose reporting 有权
    计算机断层扫描剂量指数幻像选择用于剂量报告

    公开(公告)号：US07082183B2

    公开(公告)日：2006-07-25

    申请号：US10710563

    申请日：2004-07-21

    申请人： Thomas Louis Toth ,  David Michael Hoffman

    发明人： Thomas Louis Toth ,  David Michael Hoffman

    IPC分类号： H05G1/28

    CPC分类号： A61B6/032 ,  A61B6/4035 ,  A61B6/488 ,  A61B6/583 ,  G06F19/00

    摘要： A computed tomography assembly is providing including an x-ray gantry assembly, an x-ray source projecting a beam of x-rays, a detector assembly positioned opposite the x-ray source and receiving the beam of x-rays, and a control mechanism in communication with the x-ray source and the detector assembly. The control mechanism includes logic adapted to: execute at least one scout scan of the object to produce a first scout scan image; generate an elliptical patient model based on the first scout scan image; match the elliptical patient model to a phantom diameter approximation; generate a dose report based on the phantom diameter approximation; and display said dose report on a display in communication with the control mechanism.

    摘要翻译： 提供了一种计算机断层摄影组件，其包括x射线门架组件，投射X射线束的x射线源，与x射线源相对设置并接收x射线束的检测器组件，以及控制机构 与x射线源和检测器组件通信。 所述控制机构包括适于：执行对象的至少一次侦察扫描以产生第一侦察扫描图像的逻辑; 基于第一侦察扫描图像生成椭圆形病人模型; 将椭圆形患者模型与幻影直径近似相匹配; 基于幻影直径近似生成剂量报告; 并在与控制机构通信的显示器上显示所述剂量报告。

    Methods and apparatus for dynamical helical scanned image production
    5.
    发明授权
    Methods and apparatus for dynamical helical scanned image production 有权
    动态螺旋扫描图像制作方法与装置

    公开(公告)号：US06977984B2

    公开(公告)日：2005-12-20

    申请号：US10680688

    申请日：2003-10-07

    申请人： Jiang Hsieh ,  Eugene Clifford Williams ,  Thomas Louis Toth

    发明人： Jiang Hsieh ,  Eugene Clifford Williams ,  Thomas Louis Toth

    IPC分类号： A61B5/055 ,  A61B6/03 ,  G01N23/04 ,  G06T1/00

    CPC分类号： A61B6/032 ,  A61B5/055 ,  A61B6/027 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  Y10S378/901

    摘要： The present invention provides a method for producing images of an object. The method includes dynamically helically scanning an object on a moving table utilizing a scanning imaging system. During the scan, projection views of the object are acquired and stored together with corresponding table locations. A plane for reconstruction of an image of the object is selected. The stored table locations are used to determine geometric variables applicable to the stored projection views; and the stored projection views are filtered and backprojected utilizing the geometrical variables to reconstruct an image of the object at the reconstruction plane.

    摘要翻译： 本发明提供了一种用于产生对象的图像的方法。 该方法包括利用扫描成像系统动态地螺旋扫描移动台上的物体。 在扫描期间，获取对象的投影视图并与对应的表位置一起存储。 选择用于重建对象的图像的平面。 存储的表位置用于确定适用于存储的投影视图的几何变量; 并且利用几何变量对所存储的投影视图进行滤波和反投影，以重构在重构平面处的对象的图像。

    VOLTAGE MEASUREMENT IN AN IMAGING SYSTEM
    7.
    发明申请
    VOLTAGE MEASUREMENT IN AN IMAGING SYSTEM 有权
    成像系统中的电压测量

    公开(公告)号：US20110091017A1

    公开(公告)日：2011-04-21

    申请号：US12603261

    申请日：2009-10-21

    申请人： Ariel Friedlander ,  Jonathan Richard Schmidt ,  Thomas Louis Toth

    发明人： Ariel Friedlander ,  Jonathan Richard Schmidt ,  Thomas Louis Toth

    IPC分类号： G21K5/10 ,  G06F19/00 ,  G06K9/40

    CPC分类号： H05G1/265 ,  A61B6/542 ,  A61B6/583

    摘要： Methods and systems are generally described for measuring a voltage used by an imaging system to generate radiation used in imaging. In embodiments, different datasets are acquired using different degrees of attenuation of the radiation. The differently attenuated datasets are processed to derive a ratio of the differential attenuation. The attenuation ratio is processed to derive a measure of the voltage used by the imaging system to generate the radiation used to acquire the different datasets.

    摘要翻译： 通常描述了用于测量成像系统用于产生成像中使用的辐射的电压的方法和系统。 在实施例中，使用辐射的不同衰减程度来获取不同的数据集。 处理不同衰减的数据集以导出差分衰减的比率。 处理衰减比以得出成像系统用于产生用于获取不同数据集的辐射所使用的电压的量度。