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公开(公告)号：US20110091017A1
公开(公告)日：2011-04-21
申请号：US12603261
申请日：2009-10-21
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。
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公开(公告)号：US08100584B2
公开(公告)日：2012-01-24
申请号：US12603261
申请日：2009-10-21
IPC分类号： G01D18/00
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。
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公开(公告)号：US20080095314A1
公开(公告)日：2008-04-24
申请号：US11580489
申请日：2006-10-13
申请人： Jason Stuart Katcha , Bruce Matthew Dunham , Robert Senzig , Jonathan Richard Schmidt , Thomas Louis Toth , David Michael Hoffman , Phil E. Pearson , Jiang Hsieh
发明人： Jason Stuart Katcha , Bruce Matthew Dunham , Robert Senzig , Jonathan Richard Schmidt , Thomas Louis Toth , David Michael Hoffman , Phil E. Pearson , Jiang Hsieh
CPC分类号： A61B6/4014 , A61B6/032 , A61B6/037 , A61B6/56
摘要： Methods and apparatus for an imaging system are provided. The imaging system includes a gantry having a stationary member coupled to a rotating member. The rotating member has an opened area proximate an axis about which the rotating member rotates. An x-ray source provided on the rotating member. An x-ray detector may be disposed on the rotating member and configured to receive x-rays from the x-ray source. A rotary transformer having circumferentially disposed primary and secondary windings may form part of a contactless power transfer system that rotates the rotatable portion of the gantry at very high speeds, the primary winding being disposed on the stationary member and the secondary winding being disposed on the rotating member.
摘要翻译： 提供了一种用于成像系统的方法和装置。 成像系统包括具有联接到旋转构件的固定构件的台架。 旋转构件具有靠近旋转构件旋转的轴线的开口区域。 设置在旋转构件上的x射线源。 X射线检测器可以设置在旋转构件上并被配置为从x射线源接收x射线。 具有周向布置的初级和次级绕组的旋转变压器可以形成非接触式动力传递系统的一部分，其以非常高的速度使机架的可旋转部分旋转，初级绕组设置在固定构件上，次级绕组设置在旋转 会员。
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公开(公告)号：US5761257A
公开(公告)日：1998-06-02
申请号：US759133
申请日：1996-12-02
CPC分类号： A61B6/032 , G01N23/046 , G01N2223/419
摘要： The present invention, in one form, is a method for detecting reference channel blockage in a computed tomography system. The system includes an x-ray source, a detector and a reference channel. When scanning an object of interest, the x-ray source is supplied with an x-ray source current and projects an x-ray beam toward the detector and the reference channel. The detector, when impinged by the x-ray beam, generates projection data for reconstructing an image of the object of interest. The reference channel is configured to generate an actual reference channel signal when impinged by the x-ray beam. An expected reference signal is determined in accordance with the x-ray source current. The expected reference signal is then utilized to normalize the projection data.
摘要翻译： 本发明在一种形式中是用于在计算机断层摄影系统中检测参考通道阻塞的方法。 该系统包括x射线源，检测器和参考通道。 当扫描感兴趣的物体时，x射线源被提供有X射线源电流并且将X射线束投射到检测器和参考通道。 当由X射线束照射时，检测器产生用于重建感兴趣对象的图像的投影数据。 参考通道被配置为在被X射线束照射时产生实际的参考通道信号。 根据x射线源电流确定期望的参考信号。 然后利用预期的参考信号来对投影数据进行归一化。
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公开(公告)号：US07593502B2
公开(公告)日：2009-09-22
申请号：US11580489
申请日：2006-10-13
申请人： Jason Stuart Katcha , Bruce Matthew Dunham , Robert Senzig , Jonathan Richard Schmidt , Thomas Louis Toth , David Michael Hoffman , Phil E. Pearson, Jr. , Jiang Hsieh
发明人： Jason Stuart Katcha , Bruce Matthew Dunham , Robert Senzig , Jonathan Richard Schmidt , Thomas Louis Toth , David Michael Hoffman , Phil E. Pearson, Jr. , Jiang Hsieh
IPC分类号： A61B6/03
CPC分类号： A61B6/4014 , A61B6/032 , A61B6/037 , A61B6/56
摘要： Methods and apparatus for an imaging system are provided. The imaging system includes a gantry having a stationary member coupled to a rotating member. The rotating member has an opened area proximate an axis about which the rotating member rotates. An x-ray source provided on the rotating member. An x-ray detector may be disposed on the rotating member and configured to receive x-rays from the x-ray source. A rotary transformer having circumferentially disposed primary and secondary windings may form part of a contactless power transfer system that rotates the rotatable portion of the gantry at very high speeds, the primary winding being disposed on the stationary member and the secondary winding being disposed on the rotating member.
摘要翻译： 提供了一种用于成像系统的方法和装置。 成像系统包括具有联接到旋转构件的固定构件的台架。 旋转构件具有靠近旋转构件旋转的轴线的开口区域。 设置在旋转构件上的x射线源。 X射线检测器可以设置在旋转构件上并被配置为从x射线源接收x射线。 具有周向布置的初级和次级绕组的旋转变压器可以形成以非常高的速度旋转机架的可旋转部分的非接触式动力传递系统的一部分，初级绕组设置在固定构件上，次级绕组设置在旋转 会员。
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公开(公告)号：US07399119B2
公开(公告)日：2008-07-15
申请号：US11230001
申请日：2005-09-19
CPC分类号： A61B6/587 , A61B6/032 , A61B6/06 , Y10S378/901
摘要： A method for measuring an alignment of a detector is described. The method includes determining, by a processor, the alignment of the detector with respect to a collimated radiation beam. The determination of the alignment is based on a plurality of signals from a first cell of the detector and a second cell of the detector, and is independent of a shape of the collimated radiation beam.
摘要翻译： 描述了用于测量检测器的对准的方法。 该方法包括由处理器确定检测器相对于准直辐射束的对准。 对准的确定基于来自检测器的第一单元和检测器的第二单元的多个信号，并且独立于准直辐射束的形状。
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7.发明授权Processes and apparatus for managing low kVp selection and dose reduction and providing increased contrast enhancement in non-destructive imaging 有权用于管理低kVp选择和剂量减少以及提供非破坏性成像增强的对比度增强的方法和设备公开(公告)号：US07280635B2
公开(公告)日：2007-10-09
申请号：US11291882
申请日：2005-12-01
申请人： Thomas Louis Toth
发明人： Thomas Louis Toth
IPC分类号： H05G1/44
CPC分类号： A61B6/032 , A61B6/467 , A61B6/481 , A61B6/508 , A61B6/542 , A61B6/544 , A61B6/548 , A61B6/56
摘要： Systems, processes and apparatus are described through which non-destructive imaging is achieved, with equivalent or increased contrast, in comparison to conventional approaches, and that facilitate reduced dosage of X-rays delivered to the object or patient being imaged.
摘要翻译： 描述了与常规方法相比，通过其实现非破坏性成像，具有等效或增加的对比度的系统，过程和装置，并且促进了递送到被成像的对象或患者的X射线的剂量减少。
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公开(公告)号：US20060251210A1
公开(公告)日：2006-11-09
申请号：US11124331
申请日：2005-05-06
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。
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9.发明授权公开(公告)号：US07082183B2
公开(公告)日：2006-07-25
申请号：US10710563
申请日：2004-07-21
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。
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公开(公告)号：US06977984B2
公开(公告)日：2005-12-20
申请号：US10680688
申请日：2003-10-07
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。
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