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公开(公告)号：US06570954B2
公开(公告)日：2003-05-27
申请号：US10050252
申请日：2002-01-16
IPC分类号： H05G160
CPC分类号： A61B6/0457 , A61B6/032
摘要： An X-ray device for the formation of slice images of an object to be examined including an X-ray source, an X-ray detector, a transport device for moving the object during the acquisition of a series of X-ray projection images of the object in a movement plane situated parallel to the imaging plane, and a control device for controlling the acquisition of the X-ray projection images and the transport device. Slice images of the object are formed from the X-ray projection images by a tomosynthesis method. In order to enable the formation of slice images of large objects to be examined, or of large parts thereof, within a period of time which is as short as possible, the X-ray source and the X-ray detector are stationary during the acquisition of the X-ray projection images and the control device is configured such that the speed of motion of the object and the moments of acquisition of the X-ray projection images are such that all points to be examined in an examination zone of the object are imaged in at least 10, but preferably in at least 50 different X-ray projection images.
摘要翻译： 一种用于形成待检查对象的切片图像的X射线装置，包括X射线源，X射线检测器，用于在获取一系列X射线投影图像期间移动物体的输送装置 在与成像平面平行的运动平面中的物体，以及用于控制X射线投影图像和运送装置的获取的控制装置。 通过断层合成法从X射线投影图像形成物体的切片图像。 为了能够在尽可能短的时间内形成要检查的大对象或其大部分的切片图像，在采集期间X射线源和X射线检测器是静止的 的X射线投影图像和控制装置被配置为使得物体的运动速度和X射线投影图像的获取时刻使得在对象的检查区域中要检查的所有点是 在至少10个，但优选至少50个不同的X射线投影图像中成像。
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公开(公告)号：US06999811B2
公开(公告)日：2006-02-14
申请号：US10197546
申请日：2002-07-17
IPC分类号： A61B5/05
CPC分类号： G06T7/38 , G06T7/33 , G06T2207/30004
摘要： A method and a device provide for the registration of two 3D image data sets of an object to be examined. The object to be examined is provided with a plurality of markers In order to enable a registration to be carried out, the positions of the markers in the 3D image data sets are first determined in a co-ordinate system associated with the relevant 3D image data set. The distances between the markers and/or the angles formed between lines which intersect in a marker and extend through two further markers are then determined. Finally, a transformation rule for the transformation of one of the 3D image data sets to the co-ordinate system of the other 3D image data set is determined.
摘要翻译： 方法和装置提供待检查对象的两个3D图像数据集的注册。 要检查的对象被设置有多个标记为了能够执行注册，首先在与相关3D图像数据相关联的坐标系中确定3D图像数据集中的标记的位置 组。 然后确定标记之间的距离和/或在标记中相交并延伸穿过另外两个标记的线之间形成的角度。 最后，确定用于将3D图像数据集中的一个转换为另一3D图像数据集的坐标系的变换规则。
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公开(公告)号：US06744852B2
公开(公告)日：2004-06-01
申请号：US10197757
申请日：2002-07-19
IPC分类号： G21K100
CPC分类号： G21K1/025 , A61B6/037 , A61B6/4258 , H01S5/3201
摘要： The invention relates to an anti-scatter grid for an X-ray device which serves to reduce scattered radiation generated in an object to be examined and includes a plurality of absorber laminations for the absorption of the scattered radiation and a channel medium which is transparent to X-rays and arranged between the absorber laminations. In order to enable notably simple and precise manufacture of such an anti-scatter grid while the primary radiation is attenuated as little as possible and scattered radiation is attenuated as much as possible, in accordance with the invention a non-elastic high-resistance foam, notably a polymethacrylimide high-resistance foam, is used as the channel medium. The invention also relates to a collimator, for example, for a single-photon emitter or a positron emitter, in which a non-elastic high-resistance foam is also used as the channel medium between the laminations.
摘要翻译： 本发明涉及一种用于X射线装置的防散射栅格，其用于减少待检测物体中产生的散射辐射，并且包括用于吸收散射辐射的多个吸收体层叠体和对第 X射线并且布置在吸收体层叠之间。 为了能够显着简单且精确地制造这种防散射栅格，同时主辐射尽可能少地衰减并且散射辐射尽可能地衰减，根据本发明，非弹性高电阻泡沫， 特别是聚甲基丙烯酰亚胺高电阻泡沫，被用作沟道介质。 本发明还涉及例如用于单光子发射器或正电子发射器的准直器，其中非弹性高电阻泡沫也用作叠片之间的通道介质。
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公开(公告)号：US06618468B2
公开(公告)日：2003-09-09
申请号：US10126214
申请日：2002-04-19
IPC分类号： H05G164
CPC分类号： G06T11/005
摘要： The invention relates to a method of reconstructing images from cone beam projection data from an examination zone (3) of an object to be examined. The cone beam projection data is acquired by means of an X-ray device which includes an X-ray source (1) and an X-ray image intensifier (2), the X-ray source (1) being guided along a trajectory around the examination zone (3) in order to acquire the projection data. First projection data are then acquired from the examination zone (3) in a first mode of operation of the X-ray image intensifier (2) which involves a low resolution. For a sub-zone (4) of the examination zone (3) second projection data is acquired in a second mode of operation of the X-ray image intensifier (2) which involves a high resolution. Subsequently, the first and second projection data is combined so as to form third projection data. The third projection data is represented by the second projection data in the sub-zone (4) of the examination zone (3) and by the first projection data in the remaining part (3a) of the examination zone (3). The images are reconstructed on the basis of the third projection data. The invention also relates to a corresponding X-ray device, notably a C-arm X-ray device.
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公开(公告)号：US06931093B2
公开(公告)日：2005-08-16
申请号：US10477822
申请日：2002-05-16
CPC分类号： A61B6/4225 , A61B6/461 , G06T11/006 , G06T2211/436 , H04N5/32 , H04N13/221 , H04N13/254 , H04N13/296 , Y10S378/901
摘要： For imaging a 3D data set the method of the invention comprises the following steps in succession: acquisition of images, reconstructing a 3D data set, followed by visualization, the reconstruction being started with a limited initial range of orientations around the direction of a local midprojection from a starting point so as to be visualized, the acquisition being continued during visualization and the reconstruction being updated in accordance with the additional acquisition obtained up to a final result. In particular, the selected part comprises a first visualization covering a range of from about 40° to 60°, with a midprojection at about from 20° to 30°.
摘要翻译： 为了对3D数据集进行成像，本发明的方法包括以下步骤：拍摄图像，重建3D数据集，随后可视化，重建以围绕局部中间投影方向的有限的初始取向范围开始 从起点开始可视化，在可视化期间继续进行采集，并根据获得的最终结果获得的附加获取更新重建。 特别地，所选择的部分包括覆盖约40°至60°的范围的第一可视化，中间投影约为20°至30°。
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6.发明授权Method and apparatus for visualizing a limited part of a 3D medical image-point-related data set, through basing a rendered image on an intermediate region between first and second clipping planes, and including spectroscopic viewing of such region 失效用于通过将渲染图像基于第一和第二剪切平面之间的中间区域，并且包括这样的区域的光谱观察来将三维医学图像点相关数据集的有限部分可视化的方法和装置公开(公告)号：US07127091B2
公开(公告)日：2006-10-24
申请号：US10023167
申请日：2001-12-18
IPC分类号： G06K9/00
CPC分类号： G06T15/30 , Y10S128/922
摘要： For visualizing a limited part of a 3D medical image-point-related data set, Selectively, a geometrically selected part of the data set is suppressed and an image rendered based on any non-suppressed part of the data set. The selected geometrically selected part includes a first selection containing all points associated to a nearer region with respect to a first clipping plane, and all points associated to a farther region with respect to a second clipping plane, respectively. The image rendered thereby is based on an intermediate region between the first clipping plane and the second clipping plane.
摘要翻译： 为了可视化3D医疗图像点相关数据集的有限部分，选择性地，数据集的几何选择的部分被抑制，并且基于数据集的任何未被抑制的部分呈现图像。 所选择的几何选择部分包括分别包含与相对于第一剪切平面相邻的更靠近区域的所有点以及相对于第二剪切平面与更远的区域相关联的所有点的第一选择。 由此渲染的图像基于第一剪裁平面和第二剪切平面之间的中间区域。
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7.发明授权Method and apparatus for generating an improved image of natural tissue in reconstructing body images from 3D-measurements 失效用于在从3D测量重建身体图像中产生改善的天然组织图像的方法和装置公开(公告)号：US07103135B2
公开(公告)日：2006-09-05
申请号：US10524422
申请日：2003-07-24
IPC分类号： A61B6/03
CPC分类号： G06T11/005 , A61B6/5258 , G06T5/005 , G06T5/20 , G06T7/11 , G06T7/136 , G06T2200/04 , G06T2207/10081 , G06T2207/30004 , Y10S378/901
摘要： A method is disclosed for generating images of a human or animal body on the basis of 3D-reconstructions from 3D-XRAY or 3D-Computer Tomography measurements, which bodies comprise both natural tissue and one or more high-density objects. The method comprises the steps of executing the measurements, distinguishing the one or more high-density objects and executing a separating procedure thereon for generating an improved image of regions of the natural tissue. In particular, the method comprises the following steps: applying a ramp filter on the various projection measurements to single out the one or more high-density objects; segmenting the singled-out one or more high-density objects into a separate 3D reconstruction; suppressing the reconstructed one or more high-density objects from the original projection measurements; and segmenting said projection measurements without the suppressed one or more high-density objects.
摘要翻译： 公开了一种基于3D-XRAY或3D-计算机断层摄影测量的3D重建来生成人体或动物体的图像的方法，其中该身体包括天然组织和一个或多个高密度物体。 该方法包括以下步骤：执行测量，区分一个或多个高密度物体并执行其上的分离程序，以产生天然组织区域的改进图像。 特别地，该方法包括以下步骤：对各种投影测量应用斜坡滤波器以单个一个或多个高密度物体; 将单独的一个或多个高密度物体分割成单独的3D重建; 从原始投影测量中抑制重建的一个或多个高密度物体; 并且分割所述投影测量而不抑制一个或多个高密度物体。
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8.发明授权X-ray examination apparatus for reconstructing a three-dimensional data set from projection images 失效用于从投影图像重建三维数据集的X射线检查装置公开(公告)号：US06788759B2
公开(公告)日：2004-09-07
申请号：US10215715
申请日：2002-08-09
IPC分类号： A61B603
CPC分类号： A61B6/583 , A61B6/4225 , A61B6/466 , Y10S378/901
摘要： An X-ray examination apparatus includes an X-ray source and an X-ray detector and is arranged to provide a series of projection images at respective orientations of the X-ray source (1) and the X-ray detector (2) relative to a predetermined frame of reference. The orientations of the projection images are calibrated relative to this frame of reference. A basic three-dimensional data set (23) is reconstructed from the projection images. A number of directions of observations (121-123) are calibrated relative to the same frame of reference. One or more additional X-ray images (111-113) are formed for the calibrated directions of observation, that is, preferably at successive instants in time. A dynamic series of three-dimensional data sets is formed by updating the basic three-dimensional data set by means of the additional X-ray images.
摘要翻译： X射线检查装置包括X射线源和X射线检测器，并且被设置成在X射线源（1）和X射线检测器（2）的相对方向上提供一系列投影图像 到预定的参考系。 投影图像的方向相对于该参考框架被校准。 从投影图像重建基本的三维数据集（23）。 观察方向（121-123）相对于相同的参照系进行校准。 形成一个或多个附加的X射线图像（111-113）用于校准的观察方向，即优选在连续的时刻。 通过利用附加的X射线图像更新基本的三维数据集来形成动态的三维数据集。
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9.发明申请Method and apparatus for generating an improved image of natural tissue in reconstructing body images from 3d-measurements 失效用于在从3D测量重建身体图像中产生改善的天然组织图像的方法和装置公开(公告)号：US20050238133A1
公开(公告)日：2005-10-27
申请号：US10524422
申请日：2003-07-24
CPC分类号： G06T11/005 , A61B6/5258 , G06T5/005 , G06T5/20 , G06T7/11 , G06T7/136 , G06T2200/04 , G06T2207/10081 , G06T2207/30004 , Y10S378/901
摘要： A method is disclosed for generating images of a human or animal body on the basis of 3D-reconstructions from 3D-XRAY or 3D-Computer Tomography measurements, which bodies comprise both natural tissue and one or more high-density objects. The method comprises the steps of executing the measurements, distinguishing the one or more high-density objects and executing a separating procedure thereon for generating an improved image of regions of the natural tissue. In particular, the method comprises the following steps: applying a ramp filter on the various projection measurements to single out the one or more high-density objects; segmenting the singled-out one or more high-density objects into a separate 3D reconstruction; suppressing the reconstructed one or more high-density objects from the original projection measurements; and segmenting said projection measurements without the suppressed one or more high-density objects.
摘要翻译： 公开了一种基于3D-XRAY或3D-计算机断层摄影测量的3D重建来生成人体或动物体的图像的方法，其中该身体包括天然组织和一个或多个高密度物体。 该方法包括以下步骤：执行测量，区分一个或多个高密度物体并执行其上的分离程序，以产生天然组织区域的改进图像。 特别地，该方法包括以下步骤：对各种投影测量应用斜坡滤波器以单个一个或多个高密度物体; 将单独的一个或多个高密度物体分割成单独的3D重建; 从原始投影测量中抑制重建的一个或多个高密度物体; 并且分割所述投影测量而不抑制一个或多个高密度物体。
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公开(公告)号：US06813334B2
公开(公告)日：2004-11-02
申请号：US10082865
申请日：2001-10-19
IPC分类号： G01N2300
CPC分类号： A61B6/4441 , A61B6/025 , A61B6/4464
摘要： A method and system of forming an X-ray layer image of an object being examined by an X-ray device having an X-ray source and an X-ray detector is described. At least one of the X-ray source and the X-ray detector can be displaced in an angular range around the object in order that X-ray projection images are acquired from different directions. When forming only a single X-ray layer image, or a plurality of X-ray layer images of parallel layers of the object, the time required for the acquisition of the X-ray projection images is notably reduced by forming the X-ray layer image directly from the X-ray projection images, where the resulting X-ray layer image is situated in a plane which extends essentially perpendicularly to the bisector of the angular range of displacement. The angular range of displacement can be less then 180°. The system and method is notably applicable to a C-arm X-ray device, in which the angular range can be chosen at will.
摘要翻译： 描述了由具有X射线源和X射线检测器的X射线装置检查的物体的X射线层图像的形成方法和系统。 X射线源和X射线检测器中的至少一个可以在物体周围的角度范围内移位，以便从不同的方向获取X射线投影图像。 当仅形成单个X射线层图像或者对象的平行层的多个X射线层图像时，通过形成X射线层而显着地减少了X射线投影图像的采集所需的时间 图像直接从X射线投影图像，其中所得的X射线层图像位于基本上垂直于角度范围的平分线延伸的平面中。 位移的角度范围可以小于180°。 该系统和方法特别适用于C臂X射线装置，其中可以随意选择角度范围。
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