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    • 2. 发明申请
    • GANTRY POSITIONING APPARATUS FOR X-RAY IMAGING
    • 用于X射线成像的机架定位设备
    • WO2004017832A2
    • 2004-03-04
    • PCT/US2003/026120
    • 2003-08-21
    • BREAKAWAY IMAGING, LLCGREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • GREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • A61B6/00
    • A61B6/4429A61B6/032A61B6/4405A61B6/4441A61N5/1081
    • A robotically controlled five degree-of-freedom x-ray gantry positioning apparatus, which is connected to a mobile cart, ceiling, floor, wall, or patient table, is being disclosed. The positioning system can be attached to a cantilevered o-shaped or c-shaped gantry. The positioning system can precisely translate the attached gantry in the three orthogonal axes X-Y-Z and orient the gantry about the X-axis and Y-axis while keeping the center of the gantry fixed, (see Figure 1). The positioning apparatus provides both iso-centric and non iso-centric "Tilt" and "Wag" rotations of the gantry around the X-axis and Y-axis respectively. The iso-centric "Wag" rotation is a multi-axis combination of two translations and one rotation. Additionally, a field of view larger than that provided by the detector is provided in pure AP (anterior/posterior) and lateral detector positions through additional combinations of multi-axis coordinated motion. Each axis can be manually controlled or motorized with position feedback to allow storage of gantry transformations. Motorized axes enable the gantry to quickly and accurately return to preset gantry positions and orientations. A system and method for enlarging the field of view of the object being imaged combines a rotation of the x-ray source and detector with a multi-axis translation of the gantry.
    • 公开了一种机器人控制的五自由度X射线机架定位设备,其连接到移动车,天花板,地板,墙壁或患者台。 定位系统可以连接到悬臂式o形或c形龙门架上。 定位系统可以精确平移三个正交轴X-Y-Z上连接的龙门架,并使龙门架绕X轴和Y轴方向定位,同时保持龙门架的中心固定(见图1)。 定位装置提供了以等中心和非等中心的“倾斜” 和“Wag” 台架分别围绕X轴和Y轴旋转。 等中心的“Wag” 旋转是两个平移和一个旋转的多轴组合。 另外,通过多轴协调运动的附加组合,在纯AP(前/后)和侧向检测器位置中提供了大于探测器提供的视场。 每个轴都可以通过位置反馈手动控制或机动化,以允许存储龙门转换。 电动轴使龙门架能够快速准确地返回预设的龙门架位置和方向。 用于放大被成像对象的视场的系统和方法将X射线源和检测器的旋转与机架的多轴平移组合。
    • 3. 发明申请
    • SYSTEMS AND METHODS FOR IMAGING LARGE FIELD-OF-VIEW OBJECTS
    • 用于成像大型现场视觉对象的系统和方法
    • WO2003081220A2
    • 2003-10-02
    • PCT/US2003/008383
    • 2003-03-18
    • BREAKAWAY IMAGING, LLCGREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • GREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • G01N23/04
    • A61B6/4452A61B6/032A61B6/06A61B6/4021A61B6/4085A61B6/4233A61B6/4405G01N23/043G01N23/046G01N2223/419
    • An imaging apparatus and related method comprising a source that projects a beam of radiation in a first trajectory; a detector located a distance from the source and positioned to receive the beam of radiation in the first trajectory; an imaging area between the source and the detector, the radiation beam from the source passing through a portion of the imaging area before it is received at the detector; a detector positioner that translates the detector to a second position in a first direction that is substantially normal to the first trajectory; and a beam positioner that alters the trajectory of the radiation beam to direct the beam onto the detector located at the second position. The radiation source can be an x-ray cone-beam source, and the detector can be a two-dimensional flat-panel detector array. The invention can be used to image objects larger than the field-of-view of the detector by translating the detector array to multiple positions, and obtaining images at each position, resulting in an effectively large feld-of-view using only a single detector array having a relatively small size. A beam positioner permits the trajectory of the beam to follow the path of the translating detector, which permits safer and more efficient dose utilization, as generally only the region of the target object that is within the field-of-view of the detector at any given time will be exposed to potentially harmful radiation.
    • 一种成像装置和相关方法,包括:在第一轨迹中投射辐射束的源; 位于与源极距离并且被定位成接收第一轨迹中的辐射束的检测器; 在源和检测器之间的成像区域,来自源的辐射束在被检测器接收之前通过成像区域的一部分; 检测器定位器,其将检测器平移到基本上垂直于第一轨迹的第一方向上的第二位置; 以及光束定位器,其改变辐射束的轨迹以将光束引导到位于第二位置的检测器上。 辐射源可以是X射线锥束源,并且检测器可以是二维平板检测器阵列。 本发明可以用于通过将检测器阵列转换为多个位置来对检测器的视野进行成像,并在每个位置获得图像,从而产生仅使用单个检测器的有效的大视场 阵列具有相对较小的尺寸。 光束定位器允许光束的轨迹遵循平移检测器的路径,其允许更安全和更有效的剂量利用,因为通常仅在目标物体的位于检测器的视场内的任何区域 给定的时间会暴露在潜在的有害辐射之下。
    • 4. 发明申请
    • SYSTEMS AND METHODS FOR QUASI-SIMULTANEOUS MULTI-PLANAR X-RAY IMAGING
    • 准同时多平面X射线成像的系统和方法
    • WO2003077763A2
    • 2003-09-25
    • PCT/US2003/008143
    • 2003-03-13
    • BREAKAWAY IMAGING, LLCGREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • GREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • A61B6/03
    • A61B6/4441A61B6/02A61B6/035A61B6/4405A61B6/56
    • Systems and methods for obtaining two-dimensional images of an object, such as a patient, in multiple projection planes. In one aspect, the invention advantageously permits quasi-simultaneous image acquisition from multiple projection planes using a single radiation source. An imaging apparatus comprises a gantry having a central opening for positioning an object to be imaged, a source of radiation that is rotatable around the interior of the gantry ring and which is adapted to project radiation onto said object from a plurality of different projection angles; and a detector system adapted to detect the radiation at each projection angle to acquire object images from multiple projection planes in a quasi-simultaneous manner. The gantry can be a substantially "O-shaped" ring, with the source rotatable 360 degrees around the interior of the ring. The source can be an x-ray source, and the imaging apparatus can be used for medical x-ray imaging. The detector array can be a two-dimensional detector, preferably a digital detector.
    • 用于在多个投影平面中获得物体(例如患者)的二维图像的系统和方法。 在一个方面,本发明有利地允许使用单个辐射源从多个投影平面准同步图像采集。 成像设备包括具有用于定位待成像物体的中心开口的台架,可绕着台架环的内部旋转的辐射源,其适于从多个不同的投影角度将辐射投射到所述物体上; 以及适于在每个投影角度检测辐射以以准同时方式从多个投影平面采集物体图像的检测器系统。 龙门架可以是一个基本上“O形”的环,其中围绕环的内部可旋转360度。 源可以是X射线源,并且成像装置可以用于医疗x射线成像。 检测器阵列可以是二维检测器,优选地是数字检测器。
    • 5. 发明申请
    • CANTILEVERED GANTRY APPARATUS FOR X-RAY IMAGING
    • 用于X射线成像的CANTILEVERVER GANTRY设备
    • WO2003103496A1
    • 2003-12-18
    • PCT/US2003/018398
    • 2003-06-11
    • BREAKAWAY IMAGING, LLCGREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • GREGERSON, Eugene, A.GRANT, Richard, K.JOHNSON, Norbert
    • A61B6/03
    • A61B6/4447A61B6/035A61B6/4405A61N5/10A61N5/1081A61N5/1082G01N2223/419
    • An x-ray scanning imaging apparatus with a rotatably fixed generally O-shaped gantry ring, which is connected on one end of the ring to support structure, such as a mobile cart, ceiling, floor, wall, or patient table, in a cantilevered fashion. The circular gantry housing remains rotatably fixed and carries an x-ray image-scanning device that can be rotated inside the gantry around the object being imaged either continuously or in a step-wise fashion. The ring can be connected rigidly to the support, or can be connected to the support via a ring positioning unit that is able to translate or tilt the gantry relative to the support on one or more axes. Multiple other embodiments exist in which the gantry housing is connected on one end only to the floor, wall, or ceiling. The x-ray device is particularly useful for two-dimensional multi-planar x-ray imaging and/or three-dimensional computed tomography (CT) imaging applications.
    • 一种具有可旋转地固定的大致O形龙门架的X射线扫描成像装置,其连接在环的一端以支撑结构,例如悬臂式的移动推车,天花板,地板,墙壁或患者台 时尚。 圆形台架壳体保持可旋转地固定,并且携带可以连续地或以逐步方式围绕被成像物体在机架内部旋转的X射线图像扫描装置。 环可以刚性地连接到支撑件,或者可以经由能够在一个或多个轴上相对于支撑件平移或倾斜台架的环定位单元连接到支撑件。 存在多个其他实施例,其中台架壳体仅在一端连接到地板,墙壁或天花板。 X射线装置对于二维多平面X射线成像和/或三维计算机断层摄影(CT)成像应用尤其有用。