公开(公告)号：US20080310582A1

公开(公告)日：2008-12-18

申请号：US12084259

申请日：2006-10-25

申请人： Thomas Flohr ,  Michael Grasruck ,  Hubertus Pietsch ,  Karl Stierstorfer ,  Christoph Suss ,  Hanns-Joachim Weinmann

发明人： Thomas Flohr ,  Michael Grasruck ,  Hubertus Pietsch ,  Karl Stierstorfer ,  Christoph Suss ,  Hanns-Joachim Weinmann

IPC分类号： A61B6/03

CPC分类号： A61K49/04 ,  A61B5/1075 ,  A61B6/032 ,  A61B6/06 ,  A61B6/4014 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/4266 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/482 ,  A61B6/488 ,  A61B6/504 ,  A61B6/542 ,  A61B6/545 ,  A61B6/583

摘要： An x-ray system is disclosed including a selector for finding an optimum combination between the contrast medium and the energy spectrum of an x-radiation for a scan to optimize the noise-to-contrast ratio. A method for creating X-ray images is also provided. The x-ray images are created with the aid of contrast media by taking into account an optimal combination between the contrast medium and the energy spectrum of an X-radiation used for a scan. A method for the use of a lanthanide-containing complex to produce a contrast medium for optimizing the combination between the contrast medium and the radiation to obtain a maximum contrast-to-noise ratio in an X-ray image is also provided.

摘要翻译： 公开了一种X射线系统，其包括用于找到造影剂与用于扫描的x辐射的能谱之间的最佳组合的选择器，以优化噪声对比度。 还提供了一种用于创建X射线图像的方法。 通过考虑造影介质和用于扫描的X射线的能谱之间的最佳组合，借助造影剂创建X射线图像。 还提供了一种使用含镧系元素的络合物以产生用于优化造影剂和辐射之间的组合以在X射线图像中获得最大对比噪声比的造影剂的方法。

公开(公告)号：US07457450B2

公开(公告)日：2008-11-25

申请号：US11043965

申请日：2005-01-28

申请人： Herbert Bruder ,  Thomas Flohr ,  Bjoern Heismann ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Bjoern Heismann ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/482 ,  Y10S378/901

摘要： A method is for recording and evaluating image data with the aid of a tomography machine. At least two recordings with different spectral distribution are made of an examination area of an object. Further, measured data obtained from the two recordings are evaluated such that additional information relating to the examination area and/or a specific representation of the image of the examination area are/is obtained from the different spectral distributions. The tomography machine includes at least two separate recording systems. Further, it is operated such that the two recording systems operate with a different spectral distribution. As such, the additional information and the specific representation of an image can be obtained in conjunction with a reduced scanning time.

摘要翻译： 一种用于通过断层摄影机记录和评估图像数据的方法。 具有不同光谱分布的至少两个记录由对象的检查区域构成。 此外，评估从两个记录获得的测量数据，使得从不同的光谱分布获得与检查区域相关的附加信息和/或检查区域的图像的特定表示。 断层摄影机包括至少两个单独的记录系统。 此外，其操作使得两个记录系统以不同的光谱分布进行操作。 因此，附加信息和图像的具体表示可以结合减少的扫描时间来获得。

公开(公告)号：US07443945B2

公开(公告)日：2008-10-28

申请号：US11790709

申请日：2007-04-27

申请人： Herbert Bruder ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Karl Stierstorfer

IPC分类号： A61B6/00

CPC分类号： A61B6/5282 ,  A61B6/032 ,  A61B6/4014

摘要： It is proposed to estimate the scattered radiation on the basis of a sinogram, which is measured in any case. In at least one embodiment, a method includes determining the potential scattering site for each measuring beam from the object tangents in the sinogram and calculating the scattered intensity from the primary radiation striking the scattering site and the angle ratios of scattering beam, object tangent and measuring beam. Also proposed, in at least one embodiment, is an X-ray CT having at least bifocal detector systems and a control and computer unit for producing tomographic pictures, the control and arithmetic unit of which contains a program code that, upon being executed, carries out the method.

摘要翻译： 建议基于正弦图估计散射辐射，这是在任何情况下测量的。 在至少一个实施例中，一种方法包括从正弦图中的物体切线确定每个测量光束的潜在散射位置，并计算来自发射散射位置的主要辐射的散射强度和散射光束的角度比，物体切线和测量 光束。 在至少一个实施例中还提出了具有至少双焦点检测器系统的X射线CT和用于产生断层图像的控制和计算机单元，其控制和运算单元包含程序代码，所述程序代码在被执行时携带 出来的方法。

公开(公告)号：US07440536B2

公开(公告)日：2008-10-21

申请号：US11543836

申请日：2006-10-06

申请人： Herbert Bruder ,  Martin Petersilka ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Martin Petersilka ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G01N23/00

CPC分类号： G03B42/02 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/5282 ,  A61B6/583

摘要： A method for scattered radiation correction of a CT system, including at least two focus/detector systems operated angularly offset from one another, is disclosed. In the method, at at least one phantom, similar to the examined object at least in a subregion, for at least one of the focus/detector systems, the scattered radiation intensity occurring is determined in the detector of a focus/detector system during the operation of the at least one focus of at least one other focus/detector system. Further, the spatial distribution thereof is stored for a number of angles of rotation of the focus/detector systems. During scanning of the object, the scattered radiation intensities, determined with the aid of a similar phantom that originate from the at least one other focus/detector system, are subtracted from the measured intensities of the first focus/detector system while taking account of the spatial orientation of the focus/detector systems and the beam respectively considered. Finally, absorption values are calculated with the aid of the intensity values thus corrected, and CT pictures or CT volume data are thereby reconstructed.

摘要翻译： 公开了一种用于CT系统的散射辐射校正的方法，其包括彼此角度偏移地操作的至少两个焦点/检测器系统。 在该方法中，至少在至少一个子区域中的被检查对象的至少一个体模，对于焦点/检测器系统中的至少一个，在焦点/检测器系统的检测器期间确定发生的散射辐射强度 操作至少一个其它焦点/检测器系统的至少一个焦点。 此外，其空间分布被存储为聚焦/检测器系统的多个旋转角度。 在扫描对象期间，借助于来自至少一个其它焦点/检测器系统的类似幻影确定的散射辐射强度从所测量的第一焦点/检测器系统的强度中减去，同时考虑到 分别考虑了焦点/探测器系统和光束的空间取向。 最后，借助于如此校正的强度值来计算吸收值，由此重建CT图像或CT体积数据。

公开(公告)号：US20080001093A1

公开(公告)日：2008-01-03

申请号：US11806160

申请日：2007-05-30

申请人： Thomas Flohr ,  Karl Stierstorfer

发明人： Thomas Flohr ,  Karl Stierstorfer

IPC分类号： G01T1/24 ,  G01J1/42

CPC分类号： A61B6/466 ,  A61B6/032 ,  G01T1/2928

摘要： A detecting apparatus is disclosed for detecting an object by way of a projection through the object onto a detection plane. In at least one embodiment, the detecting apparatus has a transmitter that is designed to emit quanta. In at least one embodiment the detection apparatus also has a detector, arranged in a detection plane, for detecting the emitted quanta, the detector being designed and arranged to generate at least one detector signal at least partially representing the object in a projection, as a function of the quanta received through the object. In at least one embodiment, the detecting apparatus is designed to generate as a function of the generated detector signal for a detected quantum a quantum signal that represents the quantum energy of one detected quantum. Finally, in at least one embodiment the detecting apparatus is designed to generate a sum signal that corresponds to a sum of the quantum energies of the quantum energies represented by the quantum signals.

摘要翻译： 公开了一种用于通过将物体投影到检测平面上来检测物体的检测装置。 在至少一个实施例中，检测装置具有设计成发射量子的发射器。 在至少一个实施例中，检测装置还具有布置在检测平面中的检测器，用于检测发射的量子，检测器被设计和布置成产生至少部分地表示投影物体的至少一个检测器信号，如 通过对象接收的量子的函数。 在至少一个实施例中，检测装置被设计成根据产生的检测器信号产生检测量子，表示一个检测量子的量子能量的量子信号。 最后，在至少一个实施例中，检测装置被设计为产生对应于由量子信号表示的量子能量的量子能量之和的和信号。

公开(公告)号：US07277522B2

公开(公告)日：2007-10-02

申请号：US11482263

申请日：2006-07-06

申请人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

IPC分类号： G01N23/00

CPC分类号： G01T1/2985 ,  A61B6/583

摘要： In a method for non-iterative focus adjustment in a CT apparatus the position of the center ray with regard to the movement direction of the focus and the correct phase between the detector sampling frequency and the focus springing frequency are calculated with a minimal number of sinogram acquisitions and is adjusted without iterative steps, corresponding to predetermined values.

摘要翻译： 在CT装置中用于非迭代聚焦调整的方法中，相对于焦点的移动方向的中心射线的位置和检测器采样频率与聚焦弹起频率之间的正确相位的计算是用最小数量的正弦图 并且在没有迭代步骤的情况下进行调整，对应于预定值。

公开(公告)号：US20070092127A1

公开(公告)日：2007-04-26

申请号：US11581149

申请日：2006-10-16

申请人： Michael Grasruck ,  Karl Stierstorfer

发明人： Michael Grasruck ,  Karl Stierstorfer

IPC分类号： G06K9/00 ,  G06K9/34

CPC分类号： G06T5/50 ,  G06T7/11 ,  G06T7/136 ,  G06T2207/10081 ,  G06T2207/30004

摘要： A method is disclosed for generating CT displays in x-ray computed tomography with contrast medium support, the blooming effect being reduced by decomposing an object into three material components when scanning the object with two different energy spectra, and determining a first component and determining the material thickness thereof by segmentation. Subsequently, in at least one embodiment, the two other material components and their material thicknesses are determined on the basis of the measured attenuation values of the two spectra for each beam, and virtual absorption data with virtual absorption coefficients are constructed for the individual material components from the material strengths thus known for the different material components, and are used to reconstruct the CT display.

摘要翻译： 公开了一种用于在具有造影介质支持的x射线计算机断层摄影中生成CT显示器的方法，通过在用两个不同的能量谱扫描物体时将物体分解为三个材料成分，并且确定第一成分并确定 材料厚度通过分割。 随后，在至少一个实施例中，基于每个光束的两个光谱的测量衰减值来确定两个其它材料部件及其材料厚度，并且为各个材料部件构造具有虚拟吸收系数的虚拟吸收数据 从对于不同材料组分而言已知的材料强度，并用于重建CT显示。

公开(公告)号：US20060018424A1

公开(公告)日：2006-01-26

申请号：US11169913

申请日：2005-06-30

申请人： Herbert Bruder ,  Thomas Flohr ,  Ernst Klotz ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Ernst Klotz ,  Karl Stierstorfer

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/032 ,  A61B5/1075 ,  A61B6/027 ,  A61B6/4085 ,  A61B6/461 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

摘要： A method is disclosed for a multislice computer assisted tomograph, capable of carrying out a spiral scan of an object volume with a pitch p selected to be small enough that each slice of the object volume is multiply detected during the spiral scan. The method includes calculating, using measured data of two temporally consecutive at least one of revolutions and half revolutions, an image of the object volume from which a change inside the object volume between the two temporally consecutive at least one of revolutions and half revolutions is directly visible. An embodiment of the method can permit, for example, the detection and visualization of dynamic processes with an enhanced time resolution.

摘要翻译： 公开了一种用于多层计算机辅助断层摄影机的方法，其能够对所选择的节距p的物体体积进行螺旋扫描，所述间距p被选择为足够小，使得在螺旋扫描期间对对象体积的每个切片进行乘法检测。 该方法包括使用两个时间上连续的至少一个旋转和半圈的测量数据来计算在两个时间上连续的至少一个转和半转之间的对象体积内的变化直接从该物体体积的图像 可见。 该方法的实施例可以允许例如具有增强的时间分辨率的动态过程的检测和可视化。

公开(公告)号：US20060018423A1

公开(公告)日：2006-01-26

申请号：US11167024

申请日：2005-06-24

申请人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Martin Petersilka ,  Karl Stierstorfer

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/032 ,  A61B6/4014

摘要： In a tomography apparatus and operating method, at least two acquisition systems are respectively each disposed in the azimuthal direction at respective specific system angles around a common rotation axis. Both system angles can be determined for a substantially constant rotation angle speed of the two acquisition systems on the basis of measurement values, which are calculated at a rotation angle position of a reference object that can be introduced into both measurement planes. The tomography apparatus in this manner enables artifact-free reconstruction of a slice or volume image using the system angles determined in this manner.

摘要翻译： 在断层摄影装置和操作方法中，至少两个采集系统分别以围绕公共旋转轴线的各个特定系统角度在方位角方向上设置。 可以基于在可以被引入到两个测量平面中的参考对象的旋转角度位置处计算的测量值来确定两个采集系统的基本恒定的旋转角速度的两个系统角度。 以这种方式的断层摄影装置使用以这种方式确定的系统角度能够进行切片或体积图像的无伪影重建。

公开(公告)号：US20050175141A1

公开(公告)日：2005-08-11

申请号：US11038090

申请日：2005-01-21

申请人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

IPC分类号： A61B6/03 ,  A61B6/00 ,  B32B27/32 ,  G06T1/00 ,  G06T11/00 ,  G21K1/12 ,  G01N23/00 ,  H05G1/60

CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/503 ,  A61B6/541 ,  B32B27/32 ,  G06T2211/412 ,  G06T2211/421

摘要： A method and a computed tomograph produce CT images of high resolution by circular scanning of a moving object by scanning sub-segments in a number of successive rest phases of an object under examination, and by respectively reconstructing and reformatting the sub-segments in order subsequently to add up a number of tomograms of the sub-segments. The sum of the sub-segments as a whole reproduce a complementary half segment of a circuit of the focus about the examination object. The moving object is thereby completely scanned, without lateral movement, by the beam being used.

摘要翻译： 一种方法和计算机断层摄影仪通过扫描运动物体的循环扫描来产生高分辨率的CT图像，通过扫描被检查物体的多个连续的休息阶段中的子段，并且随后分别重构和重新格式化子段 将各个分段的断层图相加。 子段的总和作为一个整体再现了关于检查对象的焦点的电路的互补半部分。 因此，通过所使用的梁完全扫描移动物体，而不会横向运动。