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1.发明授权Method and apparatus to filter X-ray beams generated using a CT apparatus with displaced geometry 有权过滤使用具有移位几何形状的CT装置产生的X射线束的方法和装置公开(公告)号：US08666020B2
公开(公告)日：2014-03-04
申请号：US13144167
申请日：2009-12-09
IPC分类号： A61B6/03
CPC分类号： A61B6/587 , A61B6/032 , A61B6/4035 , A61B6/508 , G21K1/10
摘要： A method and apparatus are provided to filter x-ray beams generated using a CT apparatus or other x-ray based system with displaced acquisition geometry. A CT apparatus may be used having a source (102), a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data, and a filter (146). The filter may absorb at least a portion of overlapping radiation emitted by the source at opposing angular positions. The amount of transverse displacement may be determined for a desired field of view configuration and amount of overlapping radiation. The detector may be adjusted to correspond to the amount of determined transverse displacement. The size and location of the filter may be determined based on the amount of overlapping radiation. The filter may be adjusted to correspond to the determined size and location of the filter.
摘要翻译： 提供了一种方法和装置，用于过滤使用CT装置产生的X射线束或其他基于X射线的取向几何形状的系统。 可以使用CT装置，其具有源（102），在获取投影数据期间从视场（118）的中心（114）横向移位的检测器（104）和过滤器（146）。 过滤器可以吸收源在相对的角位置处发射的重叠辐射的至少一部分。 可以针对期望的视场配置和重叠辐射量来确定横向位移的量。 检测器可以被调节以对应于确定的横向位移的量。 滤波器的尺寸和位置可以基于重叠辐射的量来确定。 滤波器可以被调节以对应于所确定的滤波器的尺寸和位置。
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公开(公告)号：US08442184B2
公开(公告)日：2013-05-14
申请号：US12996985
申请日：2009-06-01
申请人： Peter Forthmann , Udo Van Stevendaal , Ewald Roessl , Michael Grass , Roland Proksa , Jens-Peter Schlomka
发明人： Peter Forthmann , Udo Van Stevendaal , Ewald Roessl , Michael Grass , Roland Proksa , Jens-Peter Schlomka
IPC分类号： A61B6/00
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4014 , A61B6/4035 , A61B6/4042 , A61B6/4241 , A61B6/482
摘要： An imaging system includes a radiation source (106, T1, T2, T3) that rotates about an examination region and emits radiation that traverses the examination region. The radiation source (106, T1, T2, T3) emits radiation having an energy spectrum that is selectively alternately switched between at least two different energy spectra during an imaging procedure. The system further includes an energy-resolving detector array (116, D1, D2, D3) that detects radiation traversing the examination region. The energy-resolving detector array (116, D1, D2, D3) resolves the detected radiation over at least two different energy ranges and produces energy-resolved output signals as a function of both emission energy spectrum and energy range. The system further includes a reconstructor (126) that performs a spectral reconstruction of the energy-resolved output signals. In another embodiment, the detector array (116) includes a photon-counting detector array (116).
摘要翻译： 成像系统包括围绕检查区域旋转并且发射穿过检查区域的辐射的辐射源（106，T1，T2，T3）。 辐射源（106，T1，T2，T3）发射具有在成像过程期间在至少两个不同能量谱之间选择性交替切换的能谱的辐射。 该系统还包括检测穿过检查区域的辐射的能量分辨检测器阵列（116，D1，D2，D3）。 能量分辨检测器阵列（116，D1，D2，D3）通过至少两个不同的能量范围来解析检测到的辐射，并且产生作为发射能量谱和能量范围的函数的能量分辨的输出信号。 该系统还包括执行能量分辨输出信号的频谱重建的重建器（126）。 在另一个实施例中，检测器阵列（116）包括光子计数检测器阵列（116）。
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公开(公告)号：US20120002780A1
公开(公告)日：2012-01-05
申请号：US13203994
申请日：2010-02-09
CPC分类号： A61B6/032 , A61B6/027 , A61B6/037 , A61B6/06 , A61B6/488 , A61B6/5217 , A61B6/5235 , A61B6/541 , A61B6/542 , A61B6/545 , A61B6/583 , G06T7/20 , G06T2207/10072 , G06T2207/30004
摘要： A method is provided for imaging a portion of a patient that moves as a patient breathes. A motion map is produced of the portion's motion during a breathing cycle of the patient. A scanning protocol is generated using information obtained from the motion map for a given source/detector position and a given point in the breathing cycle. The scanning protocol comprises at least one setting for at least one imaging apparatus component such that a desired amount of x-ray dosage is applied to the portion of the patient at the given source/detector position and the given point in the breathing cycle. An imaging scan is performed of the portion of the patient. The at least one imaging apparatus component is adjusted during the imaging scan.
摘要翻译： 提供了一种用于对患者呼吸时移动的患者的一部分进行成像的方法。 在患者的呼吸周期期间，该部分的运动产生运动图。 使用从给定源/检测器位置的运动图获得的信息和呼吸周期中的给定点生成扫描协议。 扫描方案包括用于至少一个成像设备部件的至少一个设置，使得在给定的源/检测器位置和呼吸周期中的给定点，将期望量的x射线剂量施加到患者的部分。 对患者的部分进行成像扫描。 在成像扫描期间调整至少一个成像装置部件。
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4.发明申请公开(公告)号：US20090310825A1
公开(公告)日：2009-12-17
申请号：US12521899
申请日：2008-01-02
IPC分类号： G06K9/00
CPC分类号： G06T7/20 , A61B5/0402 , A61B6/027 , A61B6/032 , A61B6/469 , A61B6/503 , A61B6/504 , A61B6/541
摘要： The invention relates to an imaging system for imaging a region of interest comprising a moving object, which moves less in small motion phases than in large motion phases. Detection values are provided and a small motion determination unit (15) determines the motion of the object in the region of interest in the small motion phases from the 5 detection values. A large motion determination unit (16) determines the motion of the object in the large motion phases from the determined motion of the object in the small motion phases. A reconstruction unit (17) reconstructs an image of the region of interest from the detection values, wherein the reconstruction unit (17) is adapted for performing a motion compensation using the determined motions in the small and large motion phases.
摘要翻译： 本发明涉及一种用于对感兴趣的区域成像的成像系统，该成像系统包括移动物体，该运动物体在小运动相位上比在大运动相位中运动较少。 提供检测值，并且小运动确定单元（15）从5个检测值确定在小运动相位中的感兴趣区域中的对象的运动。 大运动确定单元（16）根据所确定的小运动阶段中的物体的运动来确定物体在大运动相位中的运动。 重建单元（17）从检测值重建感兴趣区域的图像，其中重建单元（17）适于使用在小的和大的运动阶段中确定的运动来执行运动补偿。
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公开(公告)号：US20080230715A1
公开(公告)日：2008-09-25
申请号：US11997417
申请日：2006-07-25
申请人： Tim Nielsen , Udo Van Stevendaal , Bernhard Gleich , Tobias Schaeffter , Paul Haaker , Peter Mazurkewitz , Steffen Weiss
发明人： Tim Nielsen , Udo Van Stevendaal , Bernhard Gleich , Tobias Schaeffter , Paul Haaker , Peter Mazurkewitz , Steffen Weiss
IPC分类号： G01J1/58
CPC分类号： A61B5/0059 , A61B5/05
摘要： An optical imaging apparatus (100) for examination of an object of interest (101), the optical imaging apparatus (100) comprising an optical radiation source (102) adapted to emit a primary optical radiation beam onto the object of interest (101), an optical radiation detector (106) adapted to detect a secondary optical radiation beam emitted by the object of interest (101) upon absorbing the primary optical radiation beam, a magnetic field generating element (107) adapted to generate an inhomogeneous magnetic field varying along an extension of the object of interest (101), and a determination unit (108) adapted to determine information concerning the object of interest (101) based on an analysis of the detected secondary optical radiation beam in combination with an analysis of the inhomogeneous magnetic field.
摘要翻译： 一种用于检查感兴趣物体（101）的光学成像设备（100），所述光学成像设备（100）包括适于将主要光辐射束发射到感兴趣对象（101）上的光辐射源（102） 适于在吸收主光辐射束时检测由感兴趣物体（101）发射的次级光辐射束的光学辐射检测器（106），适于产生沿着所述第一光辐射束变化的非均匀磁场的磁场产生元件（107） 感兴趣对象的扩展（101），以及确定单元（108），其适于基于对所检测到的次级光辐射束的分析来确定与感兴趣对象（101）有关的信息，以及非均匀磁场的分析 。
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公开(公告)号：US09107591B2
公开(公告)日：2015-08-18
申请号：US13632217
申请日：2012-10-01
摘要： An imaging system includes a radiation source that emits radiation that traverses an examination region. A controller activates the radiation source to emit radiation and deactivates the radiation source to stop radiation emission. The controller selectively activates the radiation source to emit radiation at one or more pre-determined angles. In another embodiment, the imaging system includes a data processing component that generates a virtual three dimensional image of an object of interest of the scanned subject based on the image data. In another embodiment, the imaging system is in a communication with a data manipulation and packaging component that generates at least a two dimensional or a three dimensional data set based on the volumetric image data and packages the data set in an object provided to a remote system that manipulates and navigates through the data set.
摘要翻译： 成像系统包括发射穿过检查区域的辐射的辐射源。 控制器激活辐射源发射辐射并使辐射源停用以停止辐射。 控制器选择性地激活辐射源以以一个或多个预定角度发射辐射。 在另一个实施例中，成像系统包括基于图像数据生成被扫描对象的感兴趣对象的虚拟三维图像的数据处理部件。 在另一个实施例中，成像系统与数据处理和打包部件通信，该组件基于体积图像数据生成至少二维或三维数据集，并将数据集打包在提供给远程系统的对象中 它操纵和浏览数据集。
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公开(公告)号：US08184883B2
公开(公告)日：2012-05-22
申请号：US12093458
申请日：2006-11-14
申请人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
发明人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
CPC分类号： A61B6/032 , A61B6/027 , A61B6/12 , A61B6/541 , G06T7/20 , G06T11/006 , G06T2207/10081 , G06T2207/30048 , G06T2211/412
摘要： Cardiac CT imaging using gated reconstruction is currently limited in its temporal and spatial resolution. According to an exemplary embodiment of the present invention, an examination apparatus is provided in which an identification of a high contrast object is performed. This high contrast object is then followed through the phases, resulting in a motion vector field of the high contrast object, on the basis of which a motion compensated reconstruction is then performed.
摘要翻译： 使用门控重建的心脏CT成像目前在其时间和空间分辨率方面受到限制。 根据本发明的示例性实施例，提供一种检查装置，其中执行高对比度对象的识别。 然后，该对比度较高的对象随后进入相位，导致高对比度对象的运动矢量场，然后基于此进行运动补偿重建。
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公开(公告)号：US20110116598A1
公开(公告)日：2011-05-19
申请号：US13054103
申请日：2009-07-14
IPC分类号： G01N23/04
摘要： An imaging system includes a radiation source (110) that emits radiation that traverses an examination region. A controller (116) activates the radiation source (110) to emit radiation and deactivates the radiation source (110) to stop radiation emission. The controller (116) selectively activates the radiation source (110) to emit radiation at one or more pre-determined angles. In another embodiment, the imaging system includes a data processing component (124) that generates a virtual three dimensional image of an object of interest of the scanned subject based on the image data. In another embodiment, the imaging system is in a communication with a data manipulation and packaging component (128) that generates at least a two dimensional or a three dimensional data set based on the volumetric image data and packages the data set in an object provided to a remote system (132) that manipulates and navigates through the data set.
摘要翻译： 成像系统包括发射穿过检查区域的辐射的辐射源（110）。 控制器（116）激活辐射源（110）以发射辐射并使辐射源（110）停用以停止辐射发射。 控制器（116）选择性地激活辐射源（110）以以一个或多个预定角度发射辐射。 在另一个实施例中，成像系统包括基于图像数据生成被扫描对象的感兴趣对象的虚拟三维图像的数据处理组件（124）。 在另一个实施例中，成像系统与数据操作和打包组件（128）通信，数据操纵和打包组件（128）基于体积图像数据生成至少二维或三维数据集，并将数据集打包在提供给 远程系统（132），其操纵和导航数据集。
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公开(公告)号：US20090141935A1
公开(公告)日：2009-06-04
申请号：US12093458
申请日：2006-11-14
申请人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
发明人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/12 , A61B6/541 , G06T7/20 , G06T11/006 , G06T2207/10081 , G06T2207/30048 , G06T2211/412
摘要： Cardiac CT imaging using gated reconstruction is currently limited in its temporal and spatial resolution. According to an exemplary embodiment of the present invention, an examination apparatus is provided in which an identification of a high contrast object is performed. This high contrast object is then followed through the phases, resulting in a motion vector field of the high contrast object, on the basis of which a motion compensated reconstruction is then performed.
摘要翻译： 使用门控重建的心脏CT成像目前在其时间和空间分辨率方面受到限制。 根据本发明的示例性实施例，提供一种检查装置，其中执行高对比度对象的识别。 然后，该对比度较高的对象随后进入相位，导致高对比度对象的运动矢量场，然后基于此进行运动补偿重建。
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公开(公告)号：US07346143B2
公开(公告)日：2008-03-18
申请号：US11573355
申请日：2005-08-02
申请人： Robert Manzke , Michael Grass , Udo Van Stevendaal
发明人： Robert Manzke , Michael Grass , Udo Van Stevendaal
IPC分类号： A61B6/00
摘要： The invention relates to a computer tomography scanner comprising a gantry, on the rotor of which one or more displaceable masses are arranged. During rotation of the rotor about a rotation axis, the position of each mass can be changed perpendicular to the rotation axis by means of an adjustment unit. By retaining the rotary momentum of the rotor, the rotational speed is increased when the masses are moved toward the rotation axis, and vice versa. As a result, it is possible to maintain a specific ratio between the heart rate of the examined patient and the rotational speed even if the heart rate of the patient changes during the examination.
摘要翻译： 本发明涉及一种计算机断层摄影扫描器，其包括在其上布置有一个或多个可移位质量的转子上的台架。 在转子围绕旋转轴线旋转期间，每个质量块的位置可以通过调整单元垂直于旋转轴线改变。 通过保持转子的旋转动量，当质量朝向旋转轴线移动时，转速增加，反之亦然。 结果，即使在检查期间患者的心率发生变化，也可以保持所检查患者的心率与转速之间的比率。
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