公开(公告)号：US06418185B1

公开(公告)日：2002-07-09

申请号：US09376899

申请日：1999-08-18

申请人： Guy M. Besson ,  Armin H. Pfoh

发明人： Guy M. Besson ,  Armin H. Pfoh

IPC分类号： A61B603

CPC分类号： A61B6/032 ,  G06T1/0007 ,  H04N5/32

摘要： A single-slice data acquisition system (DAS) for a CT imaging system is time-multiplexed to measure more than one signal over the DAS standard sampling time interval. In one embodiment, a detector element includes a scintillator and two photodiodes aligned with respective portions of the scintillator. Each photodiode generates a signal based on the scintillator output. The signal from one of the photodiodes is subjected to a time-dependent gain during consecutive sampling intervals. The gain-adjusted signal and the signal from the other photodiode are combined, and the combined signal is processed to obtain an estimate of the z-derivative of the signal. The estimated z-derivative is then used to generate a high quality image.

摘要翻译： 用于CT成像系统的单切片数据采集系统（DAS）进行时间复用以通过DAS标准采样时间间隔测量多于一个信号。 在一个实施例中，检测器元件包括与闪烁体的各个部分对准的闪烁体和两个光电二极管。 每个光电二极管产生基于闪烁体输出的信号。 来自一个光电二极管的信号在连续采样间隔期间经受时间依赖的增益。 增益调整信号和来自另一光电二极管的信号被组合，并且处理组合信号以获得信号的z-导数的估计。 然后使用估计的z导数来生成高质量图像。

公开(公告)号：US06415013B1

公开(公告)日：2002-07-02

申请号：US09751225

申请日：2000-12-28

申请人： Jiang Hsieh ,  Stephen W. Metz ,  Sharon X. Wang

发明人： Jiang Hsieh ,  Stephen W. Metz ,  Sharon X. Wang

IPC分类号： A61B603

CPC分类号： A61B6/032 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

摘要： There is therefore provided, in one embodiment of the present invention, a method for reconstructing a volume image of an object. The method includes steps of scanning an object with a multislice computed tomographic (CT) imaging system having a multislice detector array to acquire projection data of a volume of the object; filtering the acquired projection data; and backprojecting the filtered projection data to reconstruct voxels of the volume image. The multislice detector array has a plurality of rows and columns of detector elements and the backprojecting includes interpolating the filtered projection data across both rows and columns of the multislice detector array.

摘要翻译： 因此，在本发明的一个实施例中，提供了一种用于重建物体的体积图像的方法。 该方法包括用具有多层检测器阵列的多层计算机断层摄影（CT）成像系统扫描物体以获取物体体积的投影数据的步骤; 过滤所获取的投影数据; 并反过来投影过滤的投影数据以重建体积图像的体素。 多层检测器阵列具有多个检测器元件的行和列，并且反向投影包括跨越多层检测器阵列的行和列的内插经滤波的投影数据。

公开(公告)号：US06411670B1

公开(公告)日：2002-06-25

申请号：US09437430

申请日：1999-11-17

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： A61B603

CPC分类号： G06T11/005 ,  A61B6/027 ,  Y10S378/901

摘要： The present invention, in one aspect, is a method for producing an enhanced tomographic image of an object. The method includes steps of obtaining fan beam projection data of the object from a tomographic scan; rebinning the fan beam projection data into a quantity of parallel projection data points; applying interpolation to the quantity of parallel projection data points to increase the quantity of parallel projection data points; and generating a tomographic image from the increased quantity of parallel projection data points.

摘要翻译： 本发明在一个方面是一种用于制造物体的增强断层图像的方法。 该方法包括以下步骤：从断层扫描获得物体的扇形束投影数据; 将扇形投影数据重新组合成一定数量的平行投影数据点; 对平行投影数据点的数量应用插值以增加平行投影数据点的数量; 以及从增加量的平行投影数据点产生断层图像。

公开(公告)号：US06389097B1

公开(公告)日：2002-05-14

申请号：US09751103

申请日：2000-12-28

申请人： Cherik Bulkes ,  Jiang Hsieh ,  John M. Sabol

发明人： Cherik Bulkes ,  Jiang Hsieh ,  John M. Sabol

IPC分类号： A61B603

CPC分类号： A61B6/032

摘要： A method and apparatus for configuring a large CT detector using a plurality of smaller X-ray type detector panels wherein the panels are sized and arranged in side by side fashion to extend across a fan beam and so that where conjugate rays generated during acquisition always include at least one ray that subtends a detector panel and generates a collected signal even where the other ray in the conjugate pair is directed at a gap between panels, the method further including, after data is acquired, interpolating across each gap and then combining the interpolated data across the gaps with the collected signals to generate back projection data for each of the gap directed rays.

摘要翻译： 一种用于使用多个较小X射线型检测器面板配置大型CT检测器的方法和装置，其中所述面板的尺寸和排列方式是并排排列的，以延伸跨过风扇光束，并且使得在采集期间产生的共轭光线总是包括 至少一个对准检测器面板的射线，并且即使在共轭对中的另一个射线指向面板之间的间隙也产生收集的信号，该方法还包括在获取数据之后，跨越每个间隙内插，然后组合内插 通过采集的信号跨越间隙的数据，以产生每个间隙定向射线的反投影数据。

公开(公告)号：US06389096B1

公开(公告)日：2002-05-14

申请号：US09721330

申请日：2000-11-22

申请人： David M. Hoffman ,  Robert F. Senzig ,  Stanley H. Fox

发明人： David M. Hoffman ,  Robert F. Senzig ,  Stanley H. Fox

IPC分类号： A61B603

CPC分类号： A61B6/032

摘要： In one aspect, the invention is a method for changing at least one of a number of image slices and in-plane resolutions available in an existing imaging system. The method includes steps of: replacing the existing detector array with a replacement detector array having either narrower detector cells in the x-direction than an existing detector array, a greater number of detector cells than that of the existing detector array, or both; and selecting an in-plane resolution of the replacement detector array in accordance with a maximum bandwidth limit of a communication path in the imaging system.

摘要翻译： 一方面，本发明是用于改变现有成像系统中可用的多个图像切片和平面内分辨率中的至少一个的方法。 该方法包括以下步骤：用具有比现有检测器阵列更窄的检测器单元在x方向上的替换检测器阵列替换现有检测器阵列，比现有检测器阵列或两者更大数量的检测器单元; 以及根据所述成像系统中的通信路径的最大带宽限制来选择所述替换检测器阵列的平面内分辨率。

公开(公告)号：US06379041B1

公开(公告)日：2002-04-30

申请号：US09532073

申请日：2000-03-21

申请人： Oliver Schuetz ,  Matthias Mitschke

发明人： Oliver Schuetz ,  Matthias Mitschke

IPC分类号： A61B603

CPC分类号： A61B6/583 ,  A61B6/547

摘要： An X-ray apparatus has an X-ray examination system with an X-ray source and an X-ray detector which can be displaced relative to a subject for the pickup of 2D projections, an arrangement for determining extrinsic imaging parameters and an arrangement for determining intrinsic imaging parameters, for determining the projection geometry in the examination system for each 2D projection, and having a control and computing stage for reconstructing 3D images from the 2D projections using the extrinsic and intrinsic imaging parameters. The arrangement for determining the intrinsic imaging parameters includes X-ray-positive marks which are allocated to the X-ray source and which are in the path of an X-ray beam emanating from the X-ray source, these marks following displacement of the X-ray system.

摘要翻译： X射线装置具有X射线检查系统，X射线源和X射线检测器可相对于被摄体移位以用于2D投影的拾取，用于确定非本征成像参数的装置和用于 确定固有成像参数，用于确定用于每个2D投影的检查系统中的投影几何，以及具有用于使用外在和内在成像参数从2D投影重建3D图像的控制和计算阶段。 用于确定固有成像参数的布置包括分配给X射线源并且位于从X射线源发出的X射线束的路径中的X射线正的标记， X光系统。

公开(公告)号：US06359957B1

公开(公告)日：2002-03-19

申请号：US09745319

申请日：2000-12-21

申请人： Thomas L. Toth

发明人： Thomas L. Toth

IPC分类号： A61B603

CPC分类号： A61B6/032 ,  G01T1/2985

摘要： A method and processor for running a pulse sequencing program to perform the method for use with a multi-slice CT system wherein the system includes detector elements arranged in rows for collecting data corresponding to separate slices of an object to be imaged, the system also including fewer acquisition channels than detector elements wherein the method includes alternately connected each acquisition channel to at least first and second elements to acquire data corresponding to each element that can subsequently be combined to form a separate image for each element row in the array.

摘要翻译： 一种用于运行脉冲排序程序以执行与多切片CT系统一起使用的方法的方法和处理器，其中所述系统包括排列成行的检测器元件，用于收集对应于待成像对象的单独切片的数据，所述系统还包括 比检测器元件少的采集通道，其中该方法包括将每个采集通道交替地连接到至少第一和第二元件，以采集对应于每个元件的数据，该元件可以随后被组合以形成阵列中每个元件行的分离图像。

公开(公告)号：US06351513B1

公开(公告)日：2002-02-26

申请号：US09607902

申请日：2000-06-30

申请人： Ali Bani-Hashemi ,  Arun Krishnan ,  James Williams

发明人： Ali Bani-Hashemi ,  Arun Krishnan ,  James Williams

IPC分类号： A61B603

CPC分类号： A61B6/481 ,  A61B5/055 ,  A61B6/12 ,  A61B6/504 ,  A61B6/5235 ,  A61B6/5247 ,  A61B2562/17 ,  Y10S378/901

摘要： A method and apparatus for providing a high-quality representation of a volume having a real-time 3-D reconstruction therein of movement of an object, wherein the real-time movement of the object is determined using a lower-quality representation of only a portion of the volume. The merger of 3-D angiography image representations acquired with other modalities, such as MR or CT, is disclosed. MR or CT modality images are registered with the 3-D Angiography data, such that those other images are brought into the same coordinate frame as the 3-D Angiography images. Movement of the object is detected in a 2-D X-ray fluoroscopy image and is reconstructed in a 3-D mode.

摘要翻译： 一种用于提供其中具有物体的移动的实时3维重建的体积的高质量表示的方法和装置，其中使用较低质量的仅仅一个 部分音量。 公开了与其他方式（例如MR或CT）获得的3-D血管造影图像表示的合并。 MR或CT模态图像与3-D血管造影数据一起登记，使得其他图像被带入与3D血管造影图像相同的坐标系。 在2维X射线荧光透视图像中检测物体的移动，并以3-D模式重建。

公开(公告)号：US06349127B1

公开(公告)日：2002-02-19

申请号：US09157355

申请日：1998-09-19

申请人： Hiroshi Umeda

发明人： Hiroshi Umeda

IPC分类号： A61B603

CPC分类号： A61B6/035 ,  F16H55/42 ,  F16H55/46

摘要： With a view of facilitating the manufacture and reducing the cost, a pulley according to the present invention comprises an annular portion 100 formed by laminating rings 110, 120 and 130 and a tooth portion formed along a circumferential surface of the annular portion 100, the tooth portion comprising a plurality of resin teeth having blades formed on the side opposite to the side which is opposed to the circumferential surface of the annular portion. The rings 110, 120 and 130 are divided into a plurality of arcuate plates 111, 112, 113, 121, 122, 123, 131, 132 and 133.

摘要翻译： 为了便于制造和降低成本，根据本发明的滑轮包括通过层叠环110,120和130而形成的环形部分100和沿着环形部分100的圆周表面形成的齿部分，齿部 部分包括多个树脂齿，所述树脂齿具有形成在与所述环形部分的周向表面相对的一侧相反侧的叶片。 环110,120和130被分成多个弧形板111,112,113,121,122,123,131,132和133。

公开(公告)号：US06341156B1

公开(公告)日：2002-01-22

申请号：US09568545

申请日：2000-05-11

申请人： Lothar Baetz ,  Wolfgang Haerer ,  Thomas Mertelmeier

发明人： Lothar Baetz ,  Wolfgang Haerer ,  Thomas Mertelmeier

IPC分类号： A61B603

CPC分类号： A61B6/4233 ,  A61B6/02 ,  G01N23/04

摘要： In an x-ray diagnostic apparatus for tomosynthesis or laminographic imaging using a patient positioning table, an x-ray source which emits an x-ray beam on one side of the patient positioning table, an x-ray detector arranged on the other side of the patient positioning table for the capture of the x-ray beam and for producing digital images, a device for movement of the x-ray source, a device for shifting of the x-ray detector and a device for superimposing the digital images so that only the details lying in a specific longitudinal slice for an examination subject are sharply imaged, the x-ray detector is rotated relative to the movement direction at an angle.

摘要翻译： 在用于使用患者定位台进行的层析合成或层析成像的x射线诊断装置中，在患者定位台的一侧发射x射线束的x射线源，设置在患者定位台的另一侧的x射线检测器 用于捕获X射线束并用于产生数字图像的患者定位台，用于移动x射线源的装置，用于移动x射线检测器的装置和用于叠加数字图像的装置，使得 只有位于检查对象的特定纵向切片中的细节被锐利地成像，X射线检测器相对于移动方向以一定角度旋转。