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公开(公告)号：US20090245458A1
公开(公告)日：2009-10-01
申请号：US12300640
申请日：2007-05-08
CPC分类号： A61B6/032 , A61B6/483 , G01N23/046 , G01N2223/419 , G06T11/005
摘要： According to an embodiment of the present invention, a reconstruction scheme for a CSCT is provided which is capable of reconstructing data acquired just over a half turn, i.e. 180° plus fan angle. The reconstruction scheme may provide for an extension of the reconstruction towards smaller and larger q-regions as compared with a 360°-reconstruction, if the short scan reconstruction technique is applied to a full scan data set.
摘要翻译： 根据本发明的实施例，提供了一种用于CSCT的重建方案，其能够重建刚刚超过半圈，即180°加上扇角的数据。 如果将短扫描重建技术应用于全扫描数据集，则与360度重建相比，重建方案可以提供重建向更小和更大的q区域的扩展。
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公开(公告)号：US20080253509A1
公开(公告)日：2008-10-16
申请号：US12089404
申请日：2006-10-04
IPC分类号： G01N23/04
CPC分类号： G01V5/0025 , G01V5/005
摘要： Whereas the CT image can be acquired in a single revolution, the CSCT image acquisition may require several revolutions. According to an exemplary embodiment of the present invention, a CT/CSCT apparatus may be provided which uses CT data acquired during the first revolution to optimize acquisition parameters for the subsequent revolutions. Furthermore, projection data acquired with a pre-scanner may also be used for determining current modulation or setting an optimum voltage for the subsequent CSCT scan.
摘要翻译： 虽然CT图像可以在一个旋转中获取，但CSCT图像采集可能需要几圈。 根据本发明的示例性实施例，可以提供CT / CSCT装置，其使用在第一次旋转期间获取的CT数据来优化随后转数的采集参数。 此外，用预扫描器获取的投影数据也可以用于确定当前调制或为随后的CSCT扫描设置最佳电压。
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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：US20110096892A1
公开(公告)日：2011-04-28
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： H05G1/60
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：US20080317311A1
公开(公告)日：2008-12-25
申请号：US11574742
申请日：2005-09-09
IPC分类号： G06K9/00
CPC分类号： G01V5/0025 , G01T1/1644
摘要： A region of interest is identified using a conventional CT or X-ray approach. Then, the region of interest is scanned using a plurality of pencil beams (28) to obtain a plurality of different scattered X-ray spectra. A geometric correction is then applied to each spectrum as if the spectrum was solely due to features in the region of interest. The various spectra recorded using the beams are combined and correlated to determine features of the region of interest (32) whilst minimising the effect of features in the rest of the sample (30).
摘要翻译： 使用常规CT或X射线方法识别感兴趣区域。 然后，使用多个笔形光束（28）扫描感兴趣区域，以获得多个不同的散射X射线光谱。 然后将几何校正应用于每个频谱，好像光谱完全是由于感兴趣区域中的特征。 使用光束记录的各种光谱被组合并相关，以确定感兴趣区域（32）的特征，同时最小化样本（30）的其余部分中的特征的影响。
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公开(公告)号：US20080205598A1
公开(公告)日：2008-08-28
申请号：US11813111
申请日：2006-01-10
IPC分类号： G01N23/201
CPC分类号： A61B6/032 , A61B6/483 , A61B6/5235 , G01N23/046 , G01N23/20083 , G01N2223/419
摘要： In a CSCT material identification apparatus CT-information and differential scatter cross-sections are used for material identification. According to an aspect of the present invention, a material identification is provided which uses both the differential and the total scatter cross-sections. This may yield an improved material discrimination, i.e. a better detection rate and a lower false alarm rate.
摘要翻译： 在CSCT材料识别装置中，CT信息和差分散射截面用于材料识别。 根据本发明的一个方面，提供了使用差分和总散射截面两者的材料识别。 这可能产生改进的材料鉴别，即更好的检测率和更低的误报率。
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公开(公告)号：US20070019782A1
公开(公告)日：2007-01-25
申请号：US10575586
申请日：2004-10-05
CPC分类号： A61B6/032 , G01N23/046 , G01N2223/419 , G06T11/006 , G06T2211/416 , G06T2211/421
摘要： A reconstruction of data from CSCT data usually requires a long reconstruction time. According to the present invention, a filtered back-projection of CSCT data, wherein the CSCT data comprises a spectrum acquired by means of an energy resolving detector element is provided, wherein the filtered back-projection is performed along curved lines represented by the wave-vector transfer in the reconstruction volume. Advantageously, a reconstruction time may be reduced, while allowing for a good image quality.
摘要翻译： 从CSCT数据重建数据通常需要很长的重建时间。 根据本发明，提供CSCT数据的滤波反投影，其中CSCT数据包括通过能量分辨检测器元件获取的频谱，其中滤波反投影沿着由波 - 矢量传输在重建体积。 有利地，可以减少重建时间，同时允许良好的图像质量。
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公开(公告)号：US20070253532A1
公开(公告)日：2007-11-01
申请号：US11574741
申请日：2005-09-09
IPC分类号： G01N23/201
CPC分类号： G01T1/1644 , A61B6/03 , A61B6/483 , G01V5/0025
摘要： A CSI system is described that uses pencil beams 40,42,44,46 through a sample 30 having a region of interest 32. Each coherent scatter spectrum of sample beams 40, 44 through the region of interest is subtracted by the spectra using respective reference beams 42, 46. The measurements are combined to determine features of the region of interest 32 whilst minimising the effect of features in the rest of the sample 30.
摘要翻译： 描述了CSI系统，其通过具有感兴趣区域32的样本30使用笔束40,42,44,46。通过使用相应参考的频谱将样本波束40,44通过感兴趣区域的每个相干散射光谱减去 光束42,46。将测量结合以确定感兴趣区域32的特征，同时最小化样本30的其余部分中的特征的影响。
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公开(公告)号：US20100183115A1
公开(公告)日：2010-07-22
申请号：US12376584
申请日：2007-08-07
IPC分类号： H05G1/60
CPC分类号： G01N23/046 , G01N2223/419
摘要： A Computer Tomography system for examining an object is disclosed. The system comprises a first X-ray tube, a second X-ray tube, a first X-ray detection unit and a second X-ray detection unit. Preferably, the first X-ray detection unit is adapted to acquire a first data set by detecting radiation emitted by the first X-ray tube after passing through the object under examination, and the second X-ray detection unit is adapted to acquire a second data set by detecting radiation emitted by the second X-ray tube after being scattered by the object under examination. The system has particular application to the field of baggage inspection.
摘要翻译： 公开了一种用于检查物体的计算机断层摄影系统。 该系统包括第一X射线管，第二X射线管，第一X射线检测单元和第二X射线检测单元。 优选地，第一X射线检测单元适于通过在通过被检查物体之后检测由第一X射线管发射的辐射来获取第一数据组，并且第二X射线检测单元适于获取第二X射线检测单元 通过检测由被检查物体散射后的第二X射线管发射的辐射而设定的数据。 该系统特别适用于行李检查领域。
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10.发明申请COMPUTER TOMOGRAPHY APPARATUS AND METHOD OF EXAMINING AN OBJECT OF INTEREST WITH A COMPUTER TOMOGRAPHY APPARATUS 审中-公开计算机测绘装置和计算机计算机装置检查对象的方法公开(公告)号：US20090074132A1
公开(公告)日：2009-03-19
申请号：US11577738
申请日：2005-10-24
IPC分类号： A61B6/00
CPC分类号： G01V5/0025 , A61B6/032 , A61B6/483 , G01V5/005
摘要： A computer tomography apparatus (300) for examination of an object of interest, the computer tomography apparatus (300) comprising an X-ray source (302) adapted to emit X-rays to an object of interest, first detecting elements (304) adapted to detect X-rays coherently scattered from an object of interest (301) in an energy-resolving manner, second detecting elements (305) adapted to detect X-rays coherently scattered from an object of interest (301) in a non-energy-resolving manner, and a determination unit (306) adapted to determine, based on detecting signals received from the first detecting elements (304) and/or from the second detecting elements (305), structural information concerning the object of interest (301).
摘要翻译： 一种用于检查感兴趣对象的计算机断层摄影装置（300），所述计算机断层摄影装置（300）包括适于向感兴趣对象发射X射线的X射线源（302），适于 以能量分辨方式检测从感兴趣对象（301）相干散射的X射线，适于以非能量方式检测从感兴趣对象（301）相干散射的X射线的第二检测元件（305） 以及确定单元（306），其适于基于从所述第一检测元件（304）和/或从所述第二检测元件（305）检测到的信号来确定关于所述感兴趣对象的结构信息（301）。
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