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21. 发明申请

US20080317311A1 Coherent Scatter Imaging 审中-公开
标题翻译：相干散射成像
公开(公告)号：US20080317311A1
公开(公告)日：2008-12-25
申请号：US11574742
申请日：2005-09-09
申请人： Michael Grass , Jens-Peter Schlomka , Udo Van Stevendaal
发明人： Michael Grass , Jens-Peter Schlomka , Udo Van Stevendaal
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。

22. 发明申请

US20080205598A1 Coherent Scatter Computer Tomography Material Identification 审中-公开
标题翻译：相干散射计算机断层扫描材料鉴定
公开(公告)号：US20080205598A1
公开(公告)日：2008-08-28
申请号：US11813111
申请日：2006-01-10
申请人： Udo Van Stevendaal , Jens-Peter Schlomka
发明人： Udo Van Stevendaal , Jens-Peter Schlomka
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。

23. 发明申请

US20070019782A1 Fan-beam coherent-scatter computed tomography 审中-公开
标题翻译：扇形束相干散射计算机断层扫描
公开(公告)号：US20070019782A1
公开(公告)日：2007-01-25
申请号：US10575586
申请日：2004-10-05
申请人： Udo Van Stevendaal , Jens-Peter Schlomka
发明人： Udo Van Stevendaal , Jens-Peter Schlomka
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
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。

24. 发明申请

US20060203960A1 Method and device for examining an object 失效
标题翻译：用于检查物体的方法和装置
公开(公告)号：US20060203960A1
公开(公告)日：2006-09-14
申请号：US10545063
申请日：2004-02-03
申请人： Jens-Peter Schlomka , Jörg Sabczynski , Jörn Borgert
发明人： Jens-Peter Schlomka , Jörg Sabczynski , Jörn Borgert
IPC分类号： G01N23/04
CPC分类号： G01V5/0016
摘要： In the field of airport baggage inspection, a multi-level screening procedure is used. When a first level screening system (18) detects a “suspicious region” inside a bag, it is transferred to a next level system (2) where the bag gets rescanned. According to the present invention, a device/method is provided for finding and tracking the suspicious region inside the baggage which allows to reduce the area to be rescanned significantly. For this purpose, the image from the first level system together with the position of the suspicious region within the image is transferred from the first level system to the second level system. On arrival of the bag at the second level (21), a simple X-ray transmission image is measured using an additional source/detector system (6). The two images are then rigidly registered in order to exactly determine the suspicious region in the second level scanner system.
摘要翻译：在机场行李检查领域，采用多层次的筛选程序。当第一级筛选系统（18）检测到袋内的“可疑区域”时，将其转移到下一级系统（2），其中袋被重新扫描。根据本发明，提供了一种用于查找和跟踪行李内的可疑区域的装置/方法，其允许显着减少被重新扫描的区域。为此，来自第一级系统的图像以及图像内的可疑区域的位置被从第一级系统传送到第二级系统。在袋子到达第二级（21）时，使用附加的源/检测器系统（6）测量简单的X射线透射图像。然后刚刚登记两个图像以精确地确定第二级扫描器系统中的可疑区域。

25. 发明申请

US20060153328A1 Computed tomography device and method with three-dimensional backprojection 失效
标题翻译：计算机断层摄影装置与三维反投影法
公开(公告)号：US20060153328A1
公开(公告)日：2006-07-13
申请号：US10534159
申请日：2003-10-24
申请人： Jens-Peter Schlomka , Michael Grab
发明人： Jens-Peter Schlomka , Michael Grab
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/4085 , A61B6/4291 , G06T11/006 , G06T2211/421
摘要： The invention relates to a computed tomography method in which an examination zone is irradiated along a circular trajectory by a fan-shaped radiation beam. Radiation coherently scattered in the examination zone is measured by a detector unit, the variation in space of the scatter intensity in the examination zone being reconstructed from said measuring values. Reconstruction is performed by back projection in a volume which is defined by two linearly independent vectors of the rotational plane and a wave vector transfer.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中通过扇形辐射束沿着圆形轨迹照射检查区。通过检测器单元测量在检查区域中相干散射的辐射，从所述测量值重建检查区域中的散射强度的空间变化。通过由旋转平面的两个线性独立向量和波矢量传递限定的体积中的反投影执行重建。

26. 发明申请

US20140205057A1 DIFFERENTIAL PHASE CONTRAST IMAGING WITH ENERGY SENSITIVE DETECTION 有权
标题翻译：具有能量敏感检测的差分相位对比成像
公开(公告)号：US20140205057A1
公开(公告)日：2014-07-24
申请号：US14240783
申请日：2012-08-08
申请人： Thomas Koehler , Jens-Peter Schlomka
发明人： Thomas Koehler , Jens-Peter Schlomka
IPC分类号： G06T7/00 , G01N23/04
CPC分类号： G06T7/0014 , G01N23/046 , G06T5/50 , G06T11/005 , G06T2211/408
摘要： For correcting differential phase image data 52, differential phase image data 52 acquired with radiation at different energy levels is received, wherein the differential phase image data 52 comprises pixels 60, each pixel 60 having a phase gradient value 62a, 62b, 62c for each energy level. After that an energy dependent behavior of phase gradient values 62a, 62b, 62c of a pixel 60 is determined and a corrected phase gradient value 68 for the pixel 60 is determined from the phase gradient values 62a, 62b, 62c of the pixel 60 and a model for the energy dependence of the phase gradient values 62a, 62b, 62c.
摘要翻译：为了校正微分相位图像数据52，接收以不同能量级别的辐射获取的差分相位图像数据52，其中差分相位图像数据52包括像素60，每个像素60具有每个能量的相位梯度值62a，62b，62c 水平。之后，确定像素60的相位梯度值62a，62b，62c的与能量相关的行为，并且从像素60的相位梯度值62a，62b，62c确定像素60的校正相位梯度值68和模型，用于相位梯度值62a，62b，62c的能量依赖性。

27. 发明授权

US08338791B2 Digital pulse processing for multi-spectral photon counting readout circuits 有权
标题翻译：数字脉冲处理用于多光谱光子计数读出电路
公开(公告)号：US08338791B2
公开(公告)日：2012-12-25
申请号：US12665558
申请日：2008-05-23
申请人： Roland Proksa , Jens-Peter Schlomka , Ewald Roessl , Tuvia Liran , Aviv Marks
发明人： Roland Proksa , Jens-Peter Schlomka , Ewald Roessl , Tuvia Liran , Aviv Marks
IPC分类号： G01J5/02
CPC分类号： G01T1/171
摘要： An apparatus includes a local minimum identifier (408) that identifies a local minimum between overlapping pulses in a signal, wherein the pulses have amplitudes that are indicative of the energy of successively detected photons from a multi-energetic radiation beam by a radiation sensitive detector, and a pulse pile-up error corrector (232) that corrects, based on the local minimum, for a pulse pile-up energy-discrimination error when energy-discriminating the pulses using at least two thresholds corresponding to different energy levels. This technique may reduce spectral error when counting photons at a high count rate.
摘要翻译：一种装置包括识别信号中重叠脉冲之间的局部最小值的局部最小标识符（408），其中脉冲具有指示由辐射敏感检测器从多能辐射束连续检测到的光子的能量的幅度，以及脉冲堆积误差校正器（232），其基于局部最小值来校正针对对应于不同能级的至少两个阈值对脉冲进行能量鉴别的脉冲堆积能量鉴别误差。当以高计数率计数光子时，该技术可能降低光谱误差。

28. 发明授权

US08213566B2 K-edge imaging 有权
标题翻译： K边缘成像
公开(公告)号：US08213566B2
公开(公告)日：2012-07-03
申请号：US13000371
申请日：2009-06-22
申请人： Ewald Roessl , Roland Proksa , Jens-Peter Schlomka
发明人： Ewald Roessl , Roland Proksa , Jens-Peter Schlomka
IPC分类号： A61B6/00 , G06K9/00
CPC分类号： G01N23/087 , A61B5/4869 , A61B6/032 , A61B6/4241 , A61B6/481 , A61B6/482
摘要： An imaging system including a radiation source (110) that emits poly-chromatic radiation that traverses an examination region and a detector (116) that detects radiation traversing the examination region and produces a signal indicative of the energy of a detected photon. The system further includes an energy discriminator (122) that energy resolves the signal based on a plurality of different energy thresholds, wherein at least two of the energy thresholds have values corresponding to at least two different K-edge energies of two different elements in a mixture disposed in the examination region. The system also includes a signal decomposer (132) that decomposes the energy-resolved signal into at least a multi K-edge component representing the at least two different K-edge energies. In one instance, a stoichiometric ratio of the two different elements in the contrast agent is known and substantially constant.
摘要翻译：一种成像系统，包括发射穿过检查区域的多色辐射的辐射源（110）和检测穿过检查区域的辐射的检测器（116），并产生指示检测到的光子的能量的信号。所述系统还包括能量鉴别器（122），所述能量鉴别器（122）能量基于多个不同的能量阈值来解析所述信号，其中所述能量阈值中的至少两个具有对应于两个不同元素的至少两个不同K边能量的值混合物置于检查区域。该系统还包括信号分解器（132），其将能量分辨信号分解成代表至少两个不同的K边缘能量的至少多个K边缘分量。在一种情况下，造影剂中两种不同元素的化学计量比是已知的并且基本上是恒定的。

29. 发明申请

US20110096905A1 K-EDGE IMAGING 有权
标题翻译： K边形成像
公开(公告)号：US20110096905A1
公开(公告)日：2011-04-28
申请号：US13000371
申请日：2009-06-22
申请人： Ewald Roessl , Roland Proksa , Jens-Peter Schlomka
发明人： Ewald Roessl , Roland Proksa , Jens-Peter Schlomka
IPC分类号： G01N23/04
CPC分类号： G01N23/087 , A61B5/4869 , A61B6/032 , A61B6/4241 , A61B6/481 , A61B6/482
摘要： An imaging system including a radiation source (110) that emits poly-chromatic radiation that traverses an examination region and a detector (116) that detects radiation traversing the examination region and produces a signal indicative of the energy of a detected photon. The system further includes an energy discriminator (122) that energy resolves the signal based on a plurality of different energy thresholds, wherein at least two of the energy thresholds have values corresponding to at least two different K-edge energies of two different elements in a mixture disposed in the examination region. The system also includes a signal decomposer (132) that decomposes the energy-resolved signal into at least a multi K-edge component representing the at least two different K-edge energies. In one instance, a stoichiometric ratio of the two different elements in the contrast agent is known and substantially constant.
摘要翻译：一种成像系统，包括发射穿过检查区域的多色辐射的辐射源（110）和检测穿过检查区域的辐射的检测器（116），并产生指示检测到的光子的能量的信号。所述系统还包括能量鉴别器（122），所述能量鉴别器（122）能量基于多个不同的能量阈值来解析所述信号，其中所述能量阈值中的至少两个具有对应于两个不同元素的至少两个不同K边能量的值混合物置于检查区域。该系统还包括信号分解器（132），其将能量分辨信号分解成代表至少两个不同的K边缘能量的至少多个K边缘分量。在一种情况下，造影剂中两种不同元素的化学计量比是已知的并且基本上是恒定的。

30. 发明申请

US20110012014A1 SPECTRAL DETECTOR CALIBRATION 有权
标题翻译：光谱检测器校准
公开(公告)号：US20110012014A1
公开(公告)日：2011-01-20
申请号：US12934661
申请日：2009-03-20
申请人： Amir Livne , Naor Wainer , Jens-Peter Schlomka , Ewald Roessl , Roland Proksa
发明人： Amir Livne , Naor Wainer , Jens-Peter Schlomka , Ewald Roessl , Roland Proksa
IPC分类号： G01D18/00
CPC分类号： G01T7/005 , A61B6/032 , A61B6/4035 , A61B6/4042 , A61B6/4441 , A61B6/482 , A61B6/585 , G01N2223/3037 , G01T1/1647
摘要： A method includes detecting radiation that traverses a material having a known spectral characteristic with a radiation sensitive detector pixel that outputs a signal indicative of the detected radiation and determining a mapping between the output signal and the spectral characteristic. The method further includes determining an energy of a photon detected by the radiation sensitive detector pixel based on a corresponding output of the radiation sensitive detector pixel and the mapping.
摘要翻译：一种方法包括利用辐射敏感检测器像素检测穿过具有已知光谱特性的材料的辐射，所述辐射敏感检测器像素输出指示检测到的辐射的信号并确定输出信号和光谱特性之间的映射。该方法还包括基于辐射敏感检测器像素的对应输出和映射来确定由辐射敏感检测器像素检测到的光子的能量。

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