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1. 发明授权

US09208586B2 CT image reconstruction with edge-maintaining filtering 有权
标题翻译： CT图像重建与边缘维护过滤
公开(公告)号：US09208586B2
公开(公告)日：2015-12-08
申请号：US14036203
申请日：2013-09-25
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Rainer Raupach , Karl Stierstorfer
IPC分类号： G06T11/00 , G06T5/20
CPC分类号： G06T11/005 , G06T5/20
摘要： A method is disclosed for reconstructing image data of an examination object from measurement data, wherein the measurement data were captured previously during a relative rotational movement between a radiation source of a computed tomography system and the examination object. Filtered measurement data are calculated from the measurement data. First image data are calculated from the measurement data. Edge information is obtained from the first image data, wherein the edge information, depending on position, specifies strength and direction of edges within the first image data. New measurement data are calculated using the edge information by mixing the measurement data and the filtered measurement data and second image data are calculated from the new measurement data.
摘要翻译：公开了一种用于从测量数据重建检查对象的图像数据的方法，其中在计算机断层摄影系统的辐射源和检查对象之间的相对旋转运动期间先前捕获测量数据。过滤的测量数据由测量数据计算。从测量数据计算第一图像数据。从第一图像数据获得边缘信息，其中根据位置的边缘信息指定第一图像数据内的边缘的强度和方向。使用边缘信息通过混合测量数据和滤波的测量数据来计算新的测量数据，并且从新的测量数据计算第二图像数据。

2. 发明授权

US09192341B2 Computed tomography device and method for operating a computed tomography device 有权
标题翻译：用于操作计算机断层摄影装置的计算机断层摄影装置和方法
公开(公告)号：US09192341B2
公开(公告)日：2015-11-24
申请号：US13764865
申请日：2013-02-12
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Steffen Kappler , Martin Petersilka , Karl Stierstorfer
IPC分类号： A61B6/03 , A61B6/00 , G01T1/29
CPC分类号： A61B6/032 , A61B6/4233 , A61B6/542 , G01T1/2985
摘要： A method is disclosed for operating a computed tomography device including an x-ray source embodied to emit a fan-type beam bundle and a detector arrangement interacting therewith and including a plurality of detector elements. An embodiment of the method provides that an integration time provided to read out a detector element is dependent on the position of the detector element within the detector arrangement, wherein with a detector element which detects x-rays which penetrate the isocenter lying between the x-ray source and the detector arrangement, a longer integration time is provided, than with a detector element which detects x-rays which penetrate an examination volume which is further away from the isocenter.
摘要翻译：公开了一种用于操作计算机断层摄影装置的方法，所述计算机断层摄影装置包括体现为发射扇形束束的X射线源和与其相互作用并包括多个检测器元件的检测器装置。该方法的实施例提供了提供用于读出检测器元件的积分时间取决于检测器装置内的检测器元件的位置，其中利用检测器元件，其检测穿透位于x射线之间的等角点的x射线，与检测器元件相比，提供了更长的积分时间，该检测器元件检测穿透远离等角点的检查体积的X射线。

3. 发明授权

US09047696B2 Method for reconstructing CT images with scatter correction, in particular for dual-source CT devices 有权
标题翻译：用于利用散射校正重建CT图像的方法，特别是用于双源CT设备的方法
公开(公告)号：US09047696B2
公开(公告)日：2015-06-02
申请号：US13779925
申请日：2013-02-28
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Martin Petersilka , Karl Stierstorfer
IPC分类号： G06K9/00 , G06T11/00 , A61B6/00
CPC分类号： G06T11/003 , A61B6/507 , G06T11/005 , G06T11/006 , G06T2211/408
摘要： A method is disclosed for reconstructing image data of an examination object from measurement data, wherein the measurement data were acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination object. First image data of the examination object are reconstructed from the measurement data. Scatter signals are calculated from the first image data using a scattered radiation model, wherein the scattered radiation model specifies an angle-dependent scatter distribution for a scatter point as a function of a line integral corresponding to an attenuation integral of a scattered beam from the scatter point to a specific detector element. The calculated scatter signals are used for correcting the measurement data, and second image data are reconstructed using the corrected measurement data.
摘要翻译：公开了一种用于从测量数据重建检查对象的图像数据的方法，其中在计算机断层摄影系统的辐射源和检查对象之间的相对旋转运动的过程中获取测量数据。从测量数据重建检查对象的第一图像数据。使用散射辐射模型从第一图像数据计算散射信号，其中散射辐射模型指定散射点的角度依赖散射分布，作为对应于来自散射的散射光束的衰减积分的线积分的函数指向特定的检测器元件。所计算的散射信号用于校正测量数据，并且使用校正的测量数据重建第二图像数据。

4. 发明申请

US20150221406A1 X-RAY RADIATION DETECTOR, CT SYSTEM AND RELATED METHOD 有权
标题翻译： X射线辐射检测器，CT系统及相关方法
公开(公告)号：US20150221406A1
公开(公告)日：2015-08-06
申请号：US14418093
申请日：2013-07-09
申请人： Siemens Aktiengesellschaft
发明人： Fabrice Dierre , Edgar Göderer , Peter Hackenschmied , Steffen Kappler , Björn Kreisler , Miguel Labayen De Inza , Daniel Niederlöhner , Mario Reinwand , Christian Schröter , Karl Stierstorfer , Matthias Strassburg , Justus Tonn , Stefan Wirth
IPC分类号： G21K1/02 , G01N23/04 , G01T1/24
CPC分类号： G21K1/02 , G01N23/046 , G01T1/24 , G01T1/241 , G01T1/2985
摘要： A direct-converting x-ray radiation detector is disclosed for detecting x-ray radiation, in particular for use in a CT system. In an embodiment, the detector includes a semiconductor material used for detecting the x-ray radiation; at least one collimator; and at least one radiation source, to irradiate the semiconductor material with additional radiation. In at least one embodiment, the at least one collimator includes at least one reflection layer on a side facing the semiconductor material, on which the additional radiation is reflected to the semiconductor material. In another embodiment, a CT system including the direct-converting x-ray radiation detector, and a method for detecting incident x-ray radiation via a direct-converting x-ray radiation detector, in particular for use in a CT system, are disclosed.
摘要翻译：公开了用于检测x射线辐射的直接转换X射线辐射检测器，特别是用于CT系统中。在一个实施例中，检测器包括用于检测x射线辐射的半导体材料; 至少一个准直仪; 和至少一个辐射源，以用额外的辐射照射半导体材料。在至少一个实施例中，至少一个准直器包括在面向半导体材料的一侧上的至少一个反射层，附加辐射在该反射层上被反射到半导体材料。在另一个实施例中，公开了一种包括直接转换x射线辐射检测器的CT系统和用于经由直接转换X射线检测器检测入射X射线辐射的方法，特别是用于CT系统中的方法。

5. 发明授权

US09646731B2 X-ray radiation detector, CT system and related method 有权
公开(公告)号：US09646731B2
公开(公告)日：2017-05-09
申请号：US14418093
申请日：2013-07-09
申请人： Siemens Aktiengesellschaft
发明人： Fabrice Dierre , Edgar Göderer , Peter Hackenschmied , Steffen Kappler , Björn Kreisler , Miguel Labayen De Inza , Daniel Niederlöhner , Mario Reinwand , Christian Schröter , Karl Stierstorfer , Matthias Strassburg , Justus Tonn , Stefan Wirth
IPC分类号： G01T1/24 , G21K1/02 , G01T1/29 , G01N23/04
CPC分类号： G21K1/02 , G01N23/046 , G01T1/24 , G01T1/241 , G01T1/2985
摘要： A direct-converting x-ray radiation detector is disclosed for detecting x-ray radiation, in particular for use in a CT system. In an embodiment, the detector includes a semiconductor material used for detecting the x-ray radiation; at least one collimator; and at least one radiation source, to irradiate the semiconductor material with additional radiation. In at least one embodiment, the at least one collimator includes at least one reflection layer on a side facing the semiconductor material, on which the additional radiation is reflected to the semiconductor material. In another embodiment, a CT system including the direct-converting x-ray radiation detector, and a method for detecting incident x-ray radiation via a direct-converting x-ray radiation detector, in particular for use in a CT system, are disclosed.

6. 发明授权

US09176078B2 X-ray detector system for a computed tomography scanner and computed tomography device 有权
标题翻译：用于计算机断层扫描仪和计算机断层摄影装置的X射线检测器系统
公开(公告)号：US09176078B2
公开(公告)日：2015-11-03
申请号：US14031117
申请日：2013-09-19
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Thomas Flohr , Michael Grasruck , Karl Stierstorfer
IPC分类号： A61B6/00 , G01N23/04 , G01T1/29
CPC分类号： G01N23/046 , A61B6/584 , G01N2223/419 , G01N2223/501 , G01T1/2985
摘要： For improved sampling, an x-ray detector system for a computed tomography scanner is provided. In an embodiment, the x-ray detector system includes at least one detector row which includes a plurality of detector modules each having a plurality of detector elements. Along the at least one detector row, a first portion of the detector elements is arranged in a grid at a first grid spacing in relation to its respective neighboring detector elements, and a second portion of the detector elements is arranged in a grid at a second grid spacing in relation to its respective neighboring detector elements.
摘要翻译：为了改进采样，提供了一种用于计算机断层扫描仪的X射线检测器系统。在一个实施例中，X射线检测器系统包括至少一个检测器行，其包括多个检测器模块，每个检测器模块具有多个检测器元件。沿着至少一个检测器行，检测器元件的第一部分相对于其相应的相邻检测器元件以第一网格间隔布置成格栅，并且检测器元件的第二部分以第二个格栅布置相对于其相应的相邻检测器元件的网格间距。

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