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公开(公告)号：US20100215230A1
公开(公告)日：2010-08-26
申请号：US12707076
申请日：2010-02-17
CPC分类号： G06T11/005 , G01T1/171 , G01T1/24 , G06T2211/408
摘要： The current invention applies to photon counting silicon x-ray detectors with energy discriminating capabilities and applications in x-ray imaging systems. The overall image quality produced by such a system is improved by the presented novel methods for optimally using the energy information in Compton events and making selective use of counts induced from charges collected in neighboring pixels. The pile-up problem during high-flux imaging regimes is reduced by a novel method for signal reset, which improves the count efficiency by reducing the risk of losing event due to signal pile-up in the read out electronics chain.
摘要翻译： 本发明适用于具有能量鉴别能力和x射线成像系统中的应用的光子计数硅x射线检测器。 通过提出的用于最佳地使用康普顿事件中的能量信息的新颖方法并且选择性地使用从相邻像素中收集的电荷引起的计数来改善由这样的系统产生的整体图像质量。 高通量成像方案中的堆积问题通过一种用于信号复位的新颖方法来减少，通过降低由于读出的电子链中的信号堆积而导致的事件丢失的风险，提高了计数效率。
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公开(公告)号：US07342233B2
公开(公告)日：2008-03-11
申请号：US11282547
申请日：2005-11-18
申请人： Mats Danielsson , Mats Lundqvist
发明人： Mats Danielsson , Mats Lundqvist
CPC分类号： G01T1/2928 , A61B6/4241 , A61B6/482 , A61B6/502 , A61B6/583
摘要： An X-ray apparatus is provided for acquisition of images containing spectral information. An X-ray source and a collimator having multiple slits are operable together with a set of line detectors, the line detectors including linear arrays of photon counting channels. Each of the channels includes a photon conversion channel element which is operable to convert photons to electric pulses. A plurality of pulse counters are operable to count pulses in a plurality of different ranges of pulse strength, where the strength of a pulse depends on the energy of the photon. Further, an arrangement is included for an energy subtracting operation.
摘要翻译： 提供一种用于采集包含光谱信息的图像的X射线装置。 具有多个狭缝的X射线源和准直器与一组线检测器一起可操作，线检测器包括光子计数通道的线性阵列。 每个通道包括可操作以将光子转换成电脉冲的光子转换通道元件。 多个脉冲计数器可用于对多个不同的脉冲强度范围的脉冲进行计数，其中脉冲的强度取决于光子的能量。 此外，包括用于能量减去操作的布置。
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公开(公告)号：US20070114424A1
公开(公告)日：2007-05-24
申请号：US11282547
申请日：2005-11-18
申请人： Mats Danielsson , Mats Lundqvist
发明人： Mats Danielsson , Mats Lundqvist
IPC分类号： G01T1/24
CPC分类号： G01T1/2928 , A61B6/4241 , A61B6/482 , A61B6/502 , A61B6/583
摘要： An X-ray apparatus is provided for acquisition of images containing spectral information. An X-ray source and a collimator having multiple slits are operable together with a set of line detectors, the line detectors including linear arrays of photon counting channels. Each of the channels includes a photon conversion channel element which is operable to convert photons to electric pulses. A plurality of pulse counters are operable to count pulses in a plurality of different ranges of pulse strength, where the strength of a pulse depends on the energy of the photon. Further, an arrangement is included for an energy subtracting operation.
摘要翻译： 提供一种用于采集包含光谱信息的图像的X射线装置。 具有多个狭缝的X射线源和准直器与一组线检测器一起可操作，线检测器包括光子计数通道的线性阵列。 每个通道包括可操作以将光子转换成电脉冲的光子转换通道元件。 多个脉冲计数器可用于对多个不同的脉冲强度范围的脉冲进行计数，其中脉冲的强度取决于光子的能量。 此外，包括用于能量减去操作的布置。
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14.发明授权Diagnostic and therapeutic detector system for imaging with low and high energy X-ray and electrons 失效用于低能量和高能量X射线和电子成像的诊断和治疗探测器系统公开(公告)号：US06429578B1
公开(公告)日：2002-08-06
申请号：US09236596
申请日：1999-01-26
申请人： Mats Danielsson , Anders Brahme
发明人： Mats Danielsson , Anders Brahme
IPC分类号： H01J4300
CPC分类号： H01J47/02 , A61N5/1048 , A61N2005/1054 , G01T1/185
摘要： A detector unit for detecting photons in the energy range 1 keV to 100 MeV, includes at least two converter layers adapted to interact with incident X-ray photons and to cause electrons to be emitted therefrom, at least one amplifier adapted to interact with the electrons emitted from the converters and adapted to produce a multiplicity of secondary electrons and photons representing a signal proportional to the incident fluence of X-ray photons, a connector connecting the detector to an electric field generator providing an electric drift field for secondary electrons in the detector, and a sensor device arranged to receive the signal and provide an input to electronic signal processor.
摘要翻译： 用于检测能量范围为1keV至100MeV的光子的检测器单元包括适于与入射的X射线光子相互作用并使电子从其发射的至少两个转换器层，适于与电子相互作用的至少一个放大器 从转换器发射并且适于产生多个二次电子和光子，其表示与X射线光子的入射注量成正比的信号;将检测器连接到电场发生器的连接器，该电场产生器为检测器中的二次电子提供电漂移场 以及传感器装置，被布置成接收信号并向电子信号处理器提供输入。
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公开(公告)号：US4624053A
公开(公告)日：1986-11-25
申请号：US816302
申请日：1986-01-06
申请人： Mats Danielsson
发明人： Mats Danielsson
摘要： A saw has a plurality of generally V-shaped teeth formed by punching. The sides of each tooth define cutting edges. A bevel extends along each cutting edge. The bevels are formed by punching with a tool having a surface oriented non-perpendicular to the saw blank. Burrs formed during the punching step are not removed, but are allowed to remain to enhance the cutting ability of the teeth.
摘要翻译： 锯具有通过冲压形成的多个大致V形的齿。 每个齿的侧面限定切割边缘。 斜边沿着每个切削刃延伸。 斜面通过用具有取向为非垂直于锯切坯料的表面的工具冲压而形成。 在冲压步骤期间形成的毛刺不会被去除，而是可以保留以提高牙齿的切割能力。
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公开(公告)号：US4589306A
公开(公告)日：1986-05-20
申请号：US578367
申请日：1984-02-07
申请人： Mats Danielsson
发明人： Mats Danielsson
摘要： A saw has a plurality of generally V-shaped teeth formed by punching. The sides of each tooth define cutting edges. A bevel extends along each cutting edge. The bevels are formed by punching with a tool having a surface oriented non-perpendicular to the saw blank. Burrs formed during the punching step are not removed, but are allowed to remain to enhance the cutting ability of the teeth.
摘要翻译： 锯具有通过冲压形成的多个大致V形的齿。 每个齿的侧面限定切割边缘。 斜边沿着每个切削刃延伸。 斜面通过用具有取向为非垂直于锯切坯料的表面的工具冲压而形成。 在冲压步骤期间形成的毛刺不会被去除，而是可以保留以提高牙齿的切割能力。
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公开(公告)号：US20140016742A1
公开(公告)日：2014-01-16
申请号：US13993161
申请日：2011-10-24
申请人： Daniel Säll , Markus Wahlberg , Mats Danielsson , Torbjorn Hjarn
发明人： Daniel Säll , Markus Wahlberg , Mats Danielsson , Torbjorn Hjarn
IPC分类号： G21K1/02
摘要： The present invention relates to a method and an X-ray apparatus comprising an X-ray source, an x-ray detector, and at least a first collimator having a first active position and a second collimator having a second active position for forming a bundle of X-ray beams, wherein both of said active positions are located in a substantially straight path between said X-ray source and said detector, but at different distances from said X-ray source. The X-ray apparatus further comprises a selector arrangement for switching one of said first or second collimators in said first or second active position, whereby when one of said first or second collimators is in an active position the other collimator is in an inactive position.
摘要翻译： 本发明涉及一种包括X射线源，X射线检测器和至少具有第一活动位置的第一准直仪和具有用于形成束的第二活动位置的第二准直器的X射线设备 的X射线束，其中两个所述活动位置位于所述X射线源和所述检测器之间但在与所述X射线源不同的距离处的基本上直的路径中。 X射线设备还包括选择器装置，用于在所述第一或第二活动位置中切换所述第一或第二准直器中的一个，由此当所述第一或第二准直仪中的一个处于活动位置时，另一个准直器处于非活动位置。
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公开(公告)号：US08183535B2
公开(公告)日：2012-05-22
申请号：US12488930
申请日：2009-06-22
申请人： Mats Danielsson , Staffan Karlsson
发明人： Mats Danielsson , Staffan Karlsson
IPC分类号： G01T1/24
摘要： A Silicon detector for x-ray imaging is based on multiple semiconductor detector modules (A) arranged together to form an overall detector area, where each semiconductor detector module includes an x-ray sensor of crystalline Silicon oriented edge-on to incoming x-rays and connected to integrated circuitry for registration of x-rays interacting in the x-ray sensor through the photoelectric effect and through Compton scattering and for an incident x-ray energy between 40 keV and 250 keV to provide the spatial and energy information from these interactions to enable an image of an object. Further, anti-scatter modules (B) are interfolded between at least a subset of the semiconductor detector modules to at least partly absorb Compton scattered x-rays.
摘要翻译： 用于X射线成像的硅检测器基于多个半导体检测器模块（A），其布置在一起以形成整体检测器区域，其中每个半导体检测器模块包括结晶硅的X射线传感器，其朝向入射的X射线 并连接到集成电路，用于通过光电效应和通过康普顿散射以及在40keV至250keV之间的入射x射线能量在x射线传感器中相互作用的X射线配准，以提供来自这些相互作用的空间和能量信息 以启用对象的图像。 此外，抗散射模块（B）在半导体检测器模块的至少一个子集之间被折叠，以至少部分地吸收康普顿散射的x射线。
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19.发明授权X-ray detector, a corresponding x-ray imaging device and a method for improving the resolution of a scintillator-based x-ray detector 有权X射线检测器，相应的X射线成像装置和用于提高基于闪烁体的X射线检测器的分辨率的方法公开(公告)号：US08076647B2
公开(公告)日：2011-12-13
申请号：US12255096
申请日：2008-10-21
申请人： Mats Danielsson , Sandra Tibbelin
发明人： Mats Danielsson , Sandra Tibbelin
IPC分类号： G01T1/20
CPC分类号： G01T1/00
摘要： A device with high efficiency and high spatial resolution for detection of individual x-rays includes a detector for x-rays with energy exceeding 20 keV based on a columnar scintillator having a number of columns, and a semiconductor readout circuit coupled to the scintillator, where the detector is configured for providing a detector resolution that is independent of scintillator thickness. This may be accomplished by estimating a misalignment of the columns of the columnar scintillator with respect to the direction of incoming x-rays and either physically aligning the columns of the columnar scintillator to the direction of incoming x-rays or computationally correcting for the estimated misalignment.
摘要翻译： 具有用于检测各个x射线的高效率和高空间分辨率的装置包括基于具有多个列的柱状闪烁体的能量超过20keV的X射线检测器，以及耦合到闪烁体的半导体读出电路，其中 检测器被配置为提供独立于闪烁体厚度的检测器分辨率。 这可以通过估计柱状闪烁体的列相对于进入的x射线的方向的未对准来实现，并且将柱状闪烁体的列物理对准到入射的x射线的方向，或者对于估计的未对准进行计算校正 。
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公开(公告)号：US20070121784A1
公开(公告)日：2007-05-31
申请号：US11522536
申请日：2006-09-18
IPC分类号： G01N23/04
CPC分类号： A61B6/504 , A61B6/06 , A61B6/4035 , A61B6/4241 , A61B6/481 , A61B6/482 , A61B6/542 , A61B2503/40
摘要： An x-ray system for narrow bandwidth imaging of in particular small objects is provided. X-radiation from an x-ray source (1) is focused by chromatic x-ray optics (2) on an x-ray energy dependent distance from the optics. Asymmetric focusing of the x-ray optics is compensated for by choosing an asymmetric focal spot of the source. The energy selective focusing makes possible blocking unwanted x-ray energies (3) from reaching an object (4). In that way optimization of the energy according to the size of the object can be done to minimize dose and maximize signal-to-noise ratio (7). Furthermore, a critical edge subtraction image can be obtained at the object dependent optimal energy if the object is injected with a contrast agent having an absorption edge close to the optimal energy (8). Radiation is registered (5) and processed (6) to combine structural and energy subtraction images.
摘要翻译： 提供了用于特定小物体的窄带成像的x射线系统。 来自X射线源（1）的X射线通过彩色x射线光学器件（2）与来自光学器件的x射线能量相关距离聚焦。 通过选择源的不对称焦点来补偿x射线光学器件的不对称聚焦。 能量选择聚焦使得可能阻止不想要的x射线能量（3）到达物体（4）。 以这种方式，可以根据对象的大小优化能量，以最小化剂量并最大化信噪比（7）。 此外，如果对象被注入具有接近最佳能量（8）的吸收边缘的造影剂，则可以在物体依赖最佳能量下获得临界边缘减影图像。 辐射被注册（5）和处理（6）以组合结构和能量减影图像。
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