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1. 发明授权

US09414797B2 Combination of contrast medium and mammography CT system with a prespecified energy range and method for generating tomographic mammography CT images by this combination 有权
标题翻译：造影剂和乳房造影CT系统的组合与预定的能量范围和用于通过该组合产生断层摄影乳房X线照相CT图像的方法
公开(公告)号：US09414797B2
公开(公告)日：2016-08-16
申请号：US14028815
申请日：2013-09-17
申请人： SIEMENS AKTIENGESELLSCHAFT , BAYER PHARMA AKTIENGESELLSCHAFT
发明人： Thomas Flohr , Gregor Jost , Rüdiger Lawaczeck , Hubertus Pietsch , Bernhard Schmidt
IPC分类号： A61B6/03 , A61B6/00
CPC分类号： A61B6/502 , A61B6/032 , A61B6/4007 , A61B6/4014 , A61B6/4035 , A61B6/4042 , A61B6/481 , A61B6/482
摘要： A mammography CT system is disclosed which includes an X-ray generator; and a first radiator-detector system. A contrast medium, including an opacifying element including an absorption peak in a first energy range, is useable for tomographic imaging of a female breast of a patient. After filtering, the X-rays with a prespecified tube voltage that form at an anode, are configured to emit an X-ray spectrum having a second energy range, wherein the radiator-detector system is configured to acquire a plurality of circumferential projections around the breast. The first energy range is a part of the second energy range and the second energy range includes an upper limit of less than 70 keV and a lower limit of greater than 20 keV. A corresponding method for generating tomographic mammography CT images is also disclosed.
摘要翻译：公开了一种包括X射线发生器的乳房摄影CT系统; 和第一散热器检测器系统。包括在第一能量范围内包括吸收峰的遮光元件的造影剂可用于患者的女性乳房的层析成像。在过滤之后，在阳极处形成具有预先规定的管电压的X射线被配置为发射具有第二能量范围的X射线光谱，其中散热器 - 检测器系统被配置为获取周围的多个周向突起乳房。第一能量范围是第二能量范围的一部分，第二能量范围包括小于70keV的上限和大于20keV的下限。还公开了用于产生断层摄影乳房X线照相CT图像的相应方法。

2. 发明授权

US11406751B2 Determination of a time-dependent contrast agent injection curve as a function of CT scan parameters 有权
公开(公告)号：US11406751B2
公开(公告)日：2022-08-09
申请号：US15138501
申请日：2016-04-26
申请人： Siemens Aktiengesellschaft , Bayer Pharma Aktiengesellschaft
发明人： Thomas Flohr , Gregor Jost , Hubertus Pietsch
IPC分类号： A61M5/00 , A61B6/00 , A61B6/03 , G01R33/56
摘要： A method for the automatic determination of a contrast agent protocol for a contrast agent-enhanced medical imaging method is described. The method includes an overview recording of a region of interest of an object under examination. In addition, an image recording protocol including a plurality of recording parameters is defined on the basis of the overview recording. Furthermore, recording time points are determined for a plurality of z-positions of the region of interest on the basis of the image recording protocol. In addition, the structures acquired with the overview recording are assigned to the recording time points determined. Finally, a contrast agent protocol including the temporal course of a contrast agent injection curve is defined as a function of the acquired structures and the assigned recording time points. A contrast agent protocol determination device is also described, as well as an imaging medicinal device.

3. 发明授权

US09826943B2 Method for operating a computer tomography system, and computer tomography system 有权
公开(公告)号：US09826943B2
公开(公告)日：2017-11-28
申请号：US14407200
申请日：2013-06-03
申请人： Siemens Aktiengesellschaft
发明人： Herbert Bruder , Thomas Flohr
IPC分类号： A61B6/00 , A61B6/03 , A61B6/02 , G01T1/29
CPC分类号： A61B6/032 , A61B6/027 , A61B6/03 , A61B6/4233 , A61B6/52 , A61B6/54 , A61B6/547 , G01T1/2985
摘要： In a computer tomography system having an x-ray detector with a detector surface at which sensor pixels, for detection of x-ray radiation, are distributed non-uniformly, and a method for operating such a system, either a pitch factor is selected, and a value range for an extent of a reconstruction field for image data is determined dependent on the distribution of the sensor pixels and dependent on the selected pitch factor, or a value for the extent of the reconstruction field is selected, and a value range for the pitch factor is determined dependent on the distribution of the sensor pixels and dependent on the selected value for the extent of the reconstruction field.

4. 发明授权

US09619869B2 Image-based motion compensation of image data 有权
公开(公告)号：US09619869B2
公开(公告)日：2017-04-11
申请号：US14457215
申请日：2014-08-12
申请人： Siemens Aktiengesellschaft
发明人： Thomas Allmendinger , Herbert Bruder , Thomas Flohr , Christopher Rohkohl
IPC分类号： A61B6/00 , G06T5/00 , A61B6/03 , G06T7/00 , G06T19/20 , G06T11/00
CPC分类号： G06T5/003 , A61B6/03 , A61B6/032 , A61B6/4078 , A61B6/4085 , A61B6/4441 , A61B6/481 , A61B6/482 , A61B6/503 , A61B6/507 , A61B6/5205 , A61B6/5264 , A61B6/5288 , A61B6/541 , G06T7/0012 , G06T11/005 , G06T19/20 , G06T2200/04 , G06T2207/10081 , G06T2207/20048 , G06T2207/20201 , G06T2207/20221 , G06T2211/412 , G06T2211/416 , G06T2211/421 , G06T2211/436
摘要： A method, a computer program, a computer program product and a computed tomography system are disclosed. The image data is a spatially three-dimensional reconstruction. At least one value for an image metric of the image data is determined. A motion field for motion compensation of the image data is then determined on the basis of image data as a function of the image metric. Essentially, partial image data is determined, wherein the partial image data corresponds in each case to the spatially three-dimensional reconstruction from scan data of an angular sub-range. The motion field of the image data is determined at the control points via an optimization method as a function of the image metric, so that, thereafter, the partial image data is transformed in accordance with the motion of the motion field. New image data is then produced by merging the partial image data.

5. 发明授权

US09439617B2 Tomographic imaging with asymmetric detection 有权
标题翻译：具有不对称检测的断层成像
公开(公告)号：US09439617B2
公开(公告)日：2016-09-13
申请号：US14029941
申请日：2013-09-18
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Thomas Flohr
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/5235 , A61B6/032 , A61B6/4233
摘要： A recording unit is rotatable about an axis of rotation, and includes an X-ray emitter and detector to detect X-rays from a fan-shaped region. The fan-shaped region is asymmetrical in relation to a vertical to the axis of rotation, running through the X-ray detector wherein the two edges of the fan-shaped region, on rotation, in each case tangentially delimit a first projection region and a second projection region. The second projection region abuts the first projection region. A method includes recording projections of the two projection regions during a full rotation of the recording unit for the reconstruction of a first image of the first projection region in such a way that the projection angle intervals in each case exhibit the same start angle. It further includes reconstructing a second image of the second projection region to merge the two reconstructed projection regions to form one unitary image.
摘要翻译：记录单元可围绕旋转轴线旋转，并且包括用于检测来自扇形区域的X射线的X射线发射器和检测器。扇形区域相对于旋转轴的垂直方向是不对称的，穿过X射线检测器，其中扇形区域的两个边缘在旋转时在每种情况下切向地限定第一突出区域和第二投影区域。第二投影区域邻接第一投影区域。一种方法包括在记录单元的完全旋转期间记录两个投影区域的突起，以便重构第一投影区域的第一图像，使得每种情况下的投影角度间隔呈现相同的起始角度。它还包括重建第二投影区域的第二图像以合并两个重建的投影区域以形成一个单一图像。

6. 发明授权

US09254109B2 Selection of a radiation shaping filter 有权
标题翻译：选择辐射整形滤波器
公开(公告)号：US09254109B2
公开(公告)日：2016-02-09
申请号：US14023626
申请日：2013-09-11
申请人： SIEMENS AKTIENGESELLSCHAFT , KLINIKUM DER UNIVERSITATE MUNCHEN
发明人： Hans-Christoph Becker , Thomas Flohr , Bernhard Schmidt
IPC分类号： A61B6/03 , G21K1/10 , A61B6/00 , A61B6/06 , A61B6/08 , A61B6/04
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/035 , A61B6/0457 , A61B6/0492 , A61B6/06 , A61B6/08 , A61B6/40 , A61B6/4435 , A61B6/482 , A61B6/542 , A61B6/544 , A61B6/545 , G21K1/10
摘要： A method for selecting a radiation shaping filter is disclosed, which modifies the spatial distribution of the intensity and/or the spectrum of x-rays of an x-ray source of an imaging system. In an embodiment, anatomical measurement data of an object under examination is recorded, from which with the aid of the imaging system image data is created. The radiation shaping filter is selected automatically on the basis of the recorded anatomical measurement data of the object under examination. An imaging system, in which a radiation shaping filter is selected, is further disclosed.
摘要翻译：公开了一种用于选择辐射整形滤波器的方法，其改变成像系统的x射线源的X射线的强度和/或光谱的空间分布。在一个实施例中，记录被检查对象的解剖测量数据，借助于成像系统，创建图像数据。根据被检查对象的记录解剖测量数据自动选择辐射整形滤波器。进一步公开了其中选择了辐射整形滤波器的成像系统。

7. 发明授权

US09992854B2 Automatic stipulation of a spectral distribution of x-ray radiation of a number of x-ray sources 有权
公开(公告)号：US09992854B2
公开(公告)日：2018-06-05
申请号：US14430583
申请日：2013-09-11
申请人： Siemens Aktiengesellschaft
发明人： Thomas Allmendinger , Thomas Flohr , Bernhard Schmidt
IPC分类号： A61B6/00 , H05G1/32 , A61B6/03 , H05G1/70
CPC分类号： H05G1/32 , A61B6/032 , A61B6/4007 , A61B6/4014 , A61B6/405 , A61B6/482 , A61B6/544 , A61B6/545 , H05G1/70
摘要： An example embodiment relates to a method for automatically stipulating a spectral distribution of the X-ray radiation of a number of X-ray sources of a computed tomography system. This involves firstly stipulating start control parameters of an X-ray source, which determine the dose and spectral distribution of X-ray radiation. On the basis of an expected attenuation of the X-ray radiation by an examination object, an examination-object-specific basic control parameter is then ascertained proceeding from the start control parameters. Afterwards, on the basis of the expected attenuation of the X-ray radiation by the examination object and the basic control parameter, first target control parameters and second target control parameters are ascertained for setting the spectral distribution of the X-ray radiation in a subsequent multi-energy measurement on the examination object. Moreover, a method, a control device suitable, and a computed tomography system comprising such a control device are described.

8. 发明授权

US09888890B2 Filter arrangement for CT system having a plurality of X-ray sources 有权
公开(公告)号：US09888890B2
公开(公告)日：2018-02-13
申请号：US15077939
申请日：2016-03-23
申请人： Siemens Aktiengesellschaft
发明人： Thomas Flohr , Bernhard Schmidt
IPC分类号： G06K9/00 , A61B6/00 , A61B6/03 , G06T11/00
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/4014 , A61B6/4078 , A61B6/482 , A61B6/5211 , G06T11/005
摘要： A filter arrangement is described. The filter arrangement includes an inner filter region, covering a cross-sectional area of a fan beam of a first X-ray source, and an outer filter region covering, together with the inner filter region, a larger cross-sectional area of a larger fan beam of a second X-ray source. The inner filter region has a first spectral filter function. The outer filter region is divided into a first subregion having a second spectral filter function and a second subregion having a third different spectral filter function. A computed tomography system is described. A method for producing a filter arrangement for a spectral filtering of X-ray radiation of a CT system having a first X-ray source and a second X-ray source is also presented. A method for reconstructing image data on the basis of projection measurement data is also described.

9. 发明申请

US20150271903A1 AUTOMATIC STIPULATION OF A SPECTRAL DISTRIBUTION OF X-RAY RADIATION OF A NUMBER OF X-RAY SOURCES 有权
标题翻译： X射线源的X射线辐射的光谱分布的自动刺激
公开(公告)号：US20150271903A1
公开(公告)日：2015-09-24
申请号：US14430583
申请日：2013-09-11
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Thomas Allmendiger , Thomas Flohr , Bernhard Schmidt
IPC分类号： H05G1/32 , A61B6/00 , H05G1/70 , A61B6/03
CPC分类号： H05G1/32 , A61B6/032 , A61B6/4007 , A61B6/4014 , A61B6/405 , A61B6/482 , A61B6/544 , A61B6/545 , H05G1/70
摘要： An example embodiment relates to a method for automatically stipulating a spectral distribution of the X-ray radiation of a number of X-ray sources of a computed tomography system. This involves firstly stipulating start control parameters of an X-ray source, which determine the dose and spectral distribution of X-ray radiation. On the basis of an expected attenuation of the X-ray radiation by an examination object, an examination-object-specific basic control parameter is then ascertained proceeding from the start control parameters. Afterwards, on the basis of the expected attenuation of the X-ray radiation by the examination object and the basic control parameter, first target control parameters and second target control parameters are ascertained for setting the spectral distribution of the X-ray radiation in a subsequent multi-energy measurement on the examination object. Moreover, a method, a control device suitable, and a computed tomography system comprising such a control device are described.
摘要翻译：示例性实施例涉及一种用于自动规定计算机断层摄影系统的多个X射线源的X射线辐射的光谱分布的方法。首先要规定X射线源的起始控制参数，确定X射线辐射的剂量和光谱分布。基于检查对象的X射线辐射的预期衰减的基础，然后从起始控制参数确定检查对象特有的基本控制参数。之后，基于检查对象的X射线辐射的预期衰减和基本控制参数，确定第一目标控制参数和第二目标控制参数，以便在随后的X射线辐射中设定光谱分布考核对象多能量测量。此外，描述了包括这种控制装置的方法，适合的控制装置和计算机断层摄影系统。

10. 发明授权

US09265471B2 Determination of a multi-energy image 有权
标题翻译：多能量图像的确定
公开(公告)号：US09265471B2
公开(公告)日：2016-02-23
申请号：US14094893
申请日：2013-12-03
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Thomas Flohr , Bernhard Schmidt
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/482 , A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/481 , A61B6/504
摘要： A method is disclosed for determining a multi-energy image via an x-ray device, including an x-ray source and an x-ray detector. The method includes a temporal sequence of individual steps. A first contrast agent-assisted image of an object area is first recorded with a first energy. Then a second contrast agent-assisted image of an object area is recorded with a second energy. A third recording of a third contrast agent-assisted image of the object area is now made with the first energy. By taking the temporal change in the contrast agent signal into account between the first and the third image, a multi-energy image is finally determined by means of the three recordings.
摘要翻译：公开了一种用于通过包括X射线源和X射线检测器的X射线装置确定多能量图像的方法。该方法包括各个步骤的时间序列。首先用第一能量记录对象区域的第一造影剂辅助图像。然后用第二能量记录对象区域的第二造影剂辅助图像。现在用第一能量对目标区域的第三造影剂辅助图像进行第三次记录。通过将造影剂信号的时间变化考虑在第一和第三图像之间，最终通过三个记录来确定多能图像。

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