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公开(公告)号：US07626174B2
公开(公告)日：2009-12-01
申请号：US11570900
申请日：2005-06-24
申请人： Bernd Schweizer , Gereon Vogtmeier , Klaus Engel
发明人： Bernd Schweizer , Gereon Vogtmeier , Klaus Engel
IPC分类号： H01L27/146
CPC分类号： G01T1/1648
摘要： The invention refers to X-ray devices, an X-ray detector and a method of correcting intensity signals. An X-ray detector then comprises for determining the intensity of X-rays, which comprise a proportion of primary radiation having an irradiation direction and a proportion of scattered radiation, at least a first sensor elements, which are each provided for converting the X-rays into first and second intensity signals, and a filter element, which is provided for decreasing the proportion of scattered radiation in the intensity of the X-rays, wherein the second sensor elements are arranged in irradiation direction behind the filter element and wherein the first sensor element fastened to the filter element is provided for determining the intensity of the X-rays before leaving the filter element. The proportion of the scattered radiation calculated from the measuring data of the first and second sensor elements is provided for correcting the second intensity signals for the following image generation.
摘要翻译： 本发明涉及X射线装置，X射线检测器和校正强度信号的方法。 然后，X射线检测器包括用于确定包括具有照射方向和散射辐射的比例的一次辐射的比例的X射线的强度，至少第一传感器元件，其被设置用于转换X射线， 射线成为第一和第二强度信号;以及滤波器元件，其设置用于减小X射线强度中的散射辐射的比例，其中第二传感器元件沿着过滤元件后面的照射方向排列，并且其中第一 固定在过滤元件上的传感器元件用于确定离开过滤元件之前的X射线的强度。 提供从第一和第二传感器元件的测量数据计算的散射辐射的比例，用于校正用于后续图像生成的第二强度信号。
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公开(公告)号：US20080272309A1
公开(公告)日：2008-11-06
申请号：US11570900
申请日：2005-06-24
IPC分类号： G01J1/42
CPC分类号： G01T1/1648
摘要： The invention refers to X-ray devices, an X-ray detector and a method of correcting intensity signals. An X-ray detector then comprises for determining the intensity of X-rays, which comprise a proportion of primary radiation having an irradiation direction and a proportion of scattered radiation, at least a first sensor elements, which are each provided for converting the X-rays into first and second intensity signals, and a filter element, which is provided for decreasing the proportion of scattered radiation in the intensity of the X-rays, wherein the second sensor elements are arranged in irradiation direction behind the filter element and wherein the first sensor element fastened to the filter element is provided for determining the intensity of the X-rays before leaving the filter element. The proportion of the scattered radiation calculated from the measuring data of the first and second sensor elements is provided for correcting the second intensity signals for the following image generation.
摘要翻译： 本发明涉及X射线装置，X射线检测器和校正强度信号的方法。 然后，X射线检测器包括用于确定包括具有照射方向和散射辐射的比例的一次辐射的比例的X射线的强度，至少第一传感器元件，其被设置用于转换X射线， 射线成为第一和第二强度信号;以及滤波器元件，其设置用于减小X射线强度中的散射辐射的比例，其中第二传感器元件沿着过滤元件后面的照射方向排列，并且其中第一 固定在过滤元件上的传感器元件用于确定离开过滤元件之前的X射线的强度。 提供从第一和第二传感器元件的测量数据计算的散射辐射的比例，用于校正用于后续图像生成的第二强度信号。
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公开(公告)号：US20070057192A1
公开(公告)日：2007-03-15
申请号：US10596152
申请日：2004-12-02
IPC分类号： G01T1/20
CPC分类号： G01T1/2018
摘要： The invention relates to an X-ray detector with detector elements (1) arranged in a layer. The detector elements (1) contain a scintillator element (2) for the conversion of X-rays (X) into photons (v), a photodiode (5) for detection of the photons (v), and a processing circuit (4) for the processing of electric signals generated by the photodiode (5). In order to protect the electronics (4) from X-rays a shielding (3) of variable effective thickness (d1, d2) is disposed in front of the electronics (4). This shielding (3) can in particular be L-shaped. By reduction of the effective thickness of the shielding (3) to a necessary minimum the volume of the scintillator unit (2) can be maximized.
摘要翻译： 本发明涉及一种具有布置在一层中的检测器元件（1）的X射线检测器。 检测器元件（1）包括用于将X射线（X）转换成光子（v）的闪烁体元件（2），用于检测光子（v）的光电二极管（5）和处理电路（4） 用于处理由光电二极管（5）产生的电信号。 为了保护电子器件（4）免受X射线影响，可变有效厚度（d 1，d 2）的屏蔽层（3）设置在电子器件（4）的前面。 这种屏蔽（3）可以特别是L形。 通过将屏蔽（3）的有效厚度减小到所需的最小值，可以使闪烁体单元（2）的体积最大化。
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公开(公告)号：US09348067B2
公开(公告)日：2016-05-24
申请号：US13319196
申请日：2010-06-09
CPC分类号： G02B5/1857 , A61B6/484 , G21K2201/06 , G21K2207/005
摘要： The present invention relates to phase-contrast imaging which visualizes the phase information of coherent radiation passing a scanned object. Focused gratings are used which reduce the creation of trapezoid profile in a projection with a particular angle to the optical axis. A laser supported method is used in combination with a dedicating etching process for creating such focused grating structures.
摘要翻译： 本发明涉及相位成像，其可视化通过扫描对象的相干辐射的相位信息。 使用聚焦光栅，其减小了与光轴具有特定角度的投影中的梯形轮廓的产生。 激光支持的方法与用于产生这种聚焦光栅结构的专用蚀刻工艺组合使用。
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公开(公告)号：US08699657B2
公开(公告)日：2014-04-15
申请号：US13139308
申请日：2009-12-10
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4007 , A61B6/4028 , A61B6/4035 , A61B6/4241 , A61B6/482
摘要： The present invention relates to an examination apparatus and a corresponding method to realize a Spectral x-ray imaging device through inverse-geometry CT. The proposed examination apparatus comprises: an X-ray source unit (14) comprising a plurality of X-ray sources (15) for emitting X-rays (24) at a plurality of locations, an X-ray detection unit (18) for detecting X-rays emitted from one or more of said X-ray sources (15) after penetration of an examination area (19) between said X-ray source unit (14) said X-ray detection unit (18) and for generating detection signals, a processing unit (36) for processing the generated detection signals, and—a control unit (26) for controlling said X-ray sources (15) to subsequently, alone or in groups emit X-rays at least two different energy spectra such that in the time interval, during which a particular X-ray source (15a) or said group of X-ray sources (15a,15d, 15g), is switched over to emit X-rays at a different energy spectrum, said particular X-ray source (15a) or said group of X-ray sources (15a, 15d, 15g) is switched off and one or more other X-ray sources (15b, 15c) or groups of X-ray sources (15b, 15e, 15h; 15c, 15f, 15i) are subsequently switched on to emit X-rays.
摘要翻译： 本发明涉及通过逆几何CT实现光谱X射线成像装置的检查装置和相应的方法。 所提出的检查装置包括：X射线源单元（14），包括用于在多个位置发射X射线（24）的多个X射线源（15）; X射线检测单元（18），用于 检测在所述X射线源单元（14）所述X射线检测单元（18）上的检查区域（19）穿透之后从一个或多个所述X射线源（15）发射的X射线，并且用于产生检测 信号，用于处理所生成的检测信号的处理单元（36），以及用于随后单独或分组地控制所述X射线源（15）的控制单元（26）发射X射线至少两个不同的能谱 使得在特定X射线源（15a）或所述X射线源组（15a，15d，15g）的切换期间以不同的能谱发射X射线的时间间隔中，所述特定 X射线源（15a）或X射线源组（15a，15d，15g）被切断，一个或多个X射线源（15b，15c）或X射线组 （15b，15e，15h; 15c，15f，15i）随后被接通以发射X射线。
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6.发明申请公开(公告)号：US20110122999A1
公开(公告)日：2011-05-26
申请号：US13055512
申请日：2009-08-06
申请人： Gereon Vogtmeier , Ralf Dorscheid
发明人： Gereon Vogtmeier , Ralf Dorscheid
CPC分类号： G21K1/025 , B22F3/114 , B22F7/002 , B22F2998/10 , B33Y70/00 , B33Y80/00 , Y02P10/295 , B22F3/1055
摘要： A grid (1) for selective transmission of electromagnetic radiation and a method for manufacturing such grid is proposed. Therein, the grid (1) comprises a structural element with walls (3) comprising a plurality of particles (19) of a radiation-absorbing material wherein the particles (19) are sintered together such that pores (21) are present between neighbouring particles (19). The pores (21) are at least partially filled with a second solid material. The filling of the pores (21) can be done by inserting the second material in a liquid, preferably molten form into the pores. The second material can be itself radiation-absorbing as well and may help to both, increase the mechanical stability of the grid and to enhance the radiation-absorbing properties.
摘要翻译： 提出了用于电磁辐射选择性传输的电网（1）及其制造方法。 其中，网格（1）包括具有壁（3）的结构元件，所述壁（3）包括多个辐射吸收材料的颗粒（19），其中所述颗粒（19）被烧结在一起，使得孔（21）存在于相邻颗粒 （19）。 孔（21）至少部分地填充有第二固体材料。 孔（21）的填充可以通过将第二材料以液体，优选熔融形式插入孔中来完成。 第二种材料本身也可以是吸收辐射的，并且可以帮助两者，增加电网的机械稳定性并增强辐射吸收性能。
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公开(公告)号：US20110079865A1
公开(公告)日：2011-04-07
申请号：US12996400
申请日：2009-06-09
IPC分类号： H01L31/0224 , H01L21/02
CPC分类号： G01T1/2928
摘要： The invention relates to a radiation detector (10), comprising an array of pixels (1), wherein each pixel (1) comprises a conversion layer of a semiconductor material (4) for converting incident radiation into electrical signals and wherein each pixel (1) is surrounded by a trench (3) that is at least partly filled with a barrier material that absorbs at least a part of photons generated by the incident radiation. The invention also relates to a method of manufacturing such a radiation detector (10).
摘要翻译： 本发明涉及一种包括像素阵列（1）的辐射检测器（10），其中每个像素（1）包括用于将入射辐射转换成电信号的半导体材料（4）的转换层，并且其中每个像素 ）由至少部分地填充有吸收入射辐射产生的光子的至少一部分的阻挡材料的沟槽（3）包围。 本发明还涉及一种制造这种辐射探测器（10）的方法。
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公开(公告)号：US20100008558A1
公开(公告)日：2010-01-14
申请号：US12518480
申请日：2007-12-11
IPC分类号： G06K9/00
摘要： The invention relates to an X-ray imaging device (100), particularly a Spectral-CT scanner, that comprises an X-ray source (10) for generating X-radiation with an energy spectrum (P(E,t)) which varies continuously during an observation period (T). In a preferred embodiment, the radiation (X) is attenuated in an object (1) according to an energy-dependent attenuation coefficient μ(E,r), the transmitted radiation is measured by sensor units (22) of a detector (20, 30), and the resulting measurement signal (i(t)) is sampled and A/D converted. This is preferably done by an oversampling A/D converter, for example a ΣΔ-ADC. The tube voltage (U(t)) that drives the X-ray source is sampled with high frequency. In an evaluation system (50), these sampled measurement values can be associated with corresponding effective energy spectra (Φ(E)) to determine the energy dependent attenuation coefficient μ(E,r).
摘要翻译： 本发明涉及一种X射线成像装置（100），特别是一种光谱CT扫描仪，其包括用于产生具有变化的能谱（P（E，t））的X射线的X射线源（10） 在观察期间（T）持续。 在优选实施例中，辐射（X）根据能量依赖衰减系数μ（E，r）在物体（1）中衰减，透射辐射由检测器（20,20）的传感器单元（22） 30），并且对所得到的测量信号（i（t））进行采样和A / D转换。 这最好由过采样A / D转换器，例如SigmaDelta-ADC完成。 驱动X射线源的管电压（U（t））以高频率进行采样。 在评估系统（50）中，这些采样的测量值可以与相应的有效能量谱（Phi（E））相关联，以确定能量依赖衰减系数μ（E，r）。
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公开(公告)号：US07627086B2
公开(公告)日：2009-12-01
申请号：US10596025
申请日：2004-11-19
申请人： Gereon Vogtmeier
发明人： Gereon Vogtmeier
IPC分类号： H05G1/64 , H01L27/146
CPC分类号： G01T1/2985 , G01T1/2018
摘要： A detector arrangement (10) for detecting and transferring detector signals to a processing unit is described. This detector arrangement is provided in particular for use in a computer tomograph for high-resolution detection of X-rays, the processing unit being in the form of a central processing unit or buffer memory (Z) on a rotatable portion of a gantry (1). To transfer the detector signals with the minimum number of contacts or plug-in connectors also in the case of a high-resolution detector arrangement (10), this comprises at least one detector module having a plurality of individual detector elements as well as an electrical unit having an electro-optical transducer for processing the signals of the detector elements and for generating optical detector module output signals.
摘要翻译： 描述了用于检测和传送检测器信号到处理单元的检测器装置（10）。 该检测器装置特别用于在X射线的高分辨率检测的计算机断层摄影机中使用，处理单元在台架的可旋转部分（1）上呈中央处理单元或缓冲存储器（Z）的形式 ）。 为了在具有高分辨率检测器装置（10）的情况下传送具有最小数量的触点或插入式连接器的检测器信号，这包括至少一个检测器模块，其具有多个单独的检测器元件以及电 单元具有用于处理检测器元件的信号并用于产生光学检测器模块输出信号的电光换能器。
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公开(公告)号：US07545912B2
公开(公告)日：2009-06-09
申请号：US10573743
申请日：2004-09-24
摘要： An X-ray unit according to the invention has a first arrangement (2) that is intended for the contactless and X-ray free measurement of first data of an object (1). A control unit (3) controls, on the basis of the first data of the object, a second arrangement (4) that measures X-ray data of the object by means of X-rays. With such an X-ray unit, first data 5 of the object can be obtained without using X-rays and control of the measurement of the X-ray data is made possible, with the result that, for the optimum quality of the X-ray data, only a minimum X-ray dose is applied to the object.
摘要翻译： 根据本发明的X射线单元具有用于对物体（1）的第一数据进行非接触式和无X射线测量的第一布置（2）。 控制单元（3）基于物体的第一数据来控制通过X射线测量物体的X射线数据的第二装置（4）。 利用这样的X射线单元，可以不使用X射线来获得物体的第一数据5，并且可以进行X射线数据的测量的控制，结果，对于X射线单元的最佳质量， 射线数据，只有最小X射线剂量被施加到物体。
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