-
公开(公告)号：US20050199819A1
公开(公告)日：2005-09-15
申请号：US10516137
申请日：2003-05-16
申请人： Herfried Wieczorek
发明人： Herfried Wieczorek
CPC分类号： G01T1/20 , G01T1/2018
摘要： An x-ray detector comprises a conversion layer for converting x-radiation into optical radiation. Photosensitive elements notably photodiodes to derive electronic signals from the optical radiation received by the photosensitive elements. The conversion layer contains Caesium-iodide doped with Thallium (CsI:Tl); the Caesium-iodide doped with Thallium is ultrapure and the Tl-doping level is in the range of 0.25-1.00 at %.
摘要翻译： X射线检测器包括用于将x辐射转换成光辐射的转换层。 感光元件尤其是光电二极管，以从光敏元件接收的光辐射中导出电子信号。 转化层含有掺杂有铊的碘化铯（CsI：T1）; 掺杂有铊的碘化铯是超纯的，并且Tl掺杂水平在0.25-1.00at％的范围内。
-
公开(公告)号：US5120964A
公开(公告)日：1992-06-09
申请号：US628303
申请日：1990-12-14
申请人： Herfried Wieczorek
发明人： Herfried Wieczorek
IPC分类号： H04N5/335 , H01L27/146
CPC分类号： H01L27/14643
摘要： A device for reading the charges of several sensor elements (12, 13, 22, . . . ) which are arranged in a matrix, for each column of sensors there being provided a common read line (82, 83) while for each row of sensors there is provided a common switching line (19, 29, . . . , 79). In order to achieve a reduction of the read capacitances for each column of sensors there are also provided several segmented read lines (91, 92, . . . ) which are connectable to only a few sensor elements (12, 13, 22, . . . ) of a column, via the switches (2) thereof, and which are individually connectable, via further electric switches (4, 5), to the common read line (82, 83) of the column; for a read operation of a row of sensors, those segmented read lines (91, 92, . . . ) of each column, which are connected to the activated row of sensors, via the switches (2) thereof are connectable to the common read lines (82, 83).
摘要翻译： 一种用于读取布置在矩阵中的几个传感器元件（12,13,22 ...）的电荷的装置，其中为每列传感器提供公共读取线（82,83），同时为每行 传感器提供了一个公共的开关线（19,29，...，79）。 为了实现每列传感器的读取电容的减小，还提供了几个分段读取线（91,92 ...），其可连接到仅几个传感器元件（12,13,22，...） 通过其开关（2）经由另外的电开关（4,5）独立地连接到列的公共读取线（82,83）; 对于一行传感器的读取操作，经由其开关（2）连接到激活的传感器行的每列的分段读取线（91,92 ...）可连接到公共读取 线（82,83）。
-
公开(公告)号：US20100322498A1
公开(公告)日：2010-12-23
申请号：US12864880
申请日：2009-02-02
IPC分类号： G06K9/00
CPC分类号： A61B6/4007 , A61B6/032 , A61B6/4014 , A61B6/4028 , A61B6/4233 , A61B6/4447 , A61B6/4488
摘要： When performing nuclear (e.g., SPECT or PET) and CT scans on a patient, an imaging system (10) includes three or more carbon nanotube x-ray sources (20) are circumferentially spaced along an arc of a rotatable gantry (16) that spans a distance larger than a maximum cross-sectional dimension of a section of a patient (14) to be imaged. The x-ray sources are sequentially pulsed to emit x-rays for scanning a section of a patient (14) including a volume of interest (VOI) (13). Only one source (20) is in an ON state at a time to create a duty cycle, which reduces cooling time for the respective sources as well as radiation dose to the subject. X-rays traversing the patient (14) are received at a flat panel x-ray detector (22) that has a width smaller than the maximum cross-sectional dimesion, which further reduces the weight and size of the system (10).
摘要翻译： 当对患者进行核（例如SPECT或PET）和CT扫描时，成像系统（10）包括三个或更多个碳纳米管x射线源（20）沿着可旋转机架（16）的圆弧沿圆周间隔开， 跨越要被成像的患者（14）的一部分的最大横截面尺寸的距离。 x射线源被顺序地脉冲以发射X射线，用于扫描包括感兴趣体积（VOI）（13）的患者（14）的一部分。 一次只有一个源（20）处于ON状态以创建占空比，这降低了各个源的冷却时间以及对被摄体的辐射剂量。 穿过患者（14）的X射线被接收在具有小于最大横截面尺寸的宽度的平板X射线检测器（22）上，这进一步减小了系统（10）的重量和尺寸。
-
公开(公告)号：US07405408B2
公开(公告)日：2008-07-29
申请号：US10596152
申请日：2004-12-02
申请人： Gereon Vogtmeier , Roger Steadman , Klaus Jurgen Engel , Herfried Wieczorek , Wolfgang Eckenbach
发明人： Gereon Vogtmeier , Roger Steadman , Klaus Jurgen Engel , Herfried Wieczorek , Wolfgang Eckenbach
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。
-
公开(公告)号：US06292528B1
公开(公告)日：2001-09-18
申请号：US09428770
申请日：1999-10-28
IPC分类号： A61B600
CPC分类号： A61B6/032 , A61B6/4085 , G01T1/202 , G01T1/2985
摘要： A computer tomograph detector for the detection of electromagnetic radiation transmitted by an object, which detector includes at least one detector row which consists of a plurality of detector elements, each detector element including a scintillator for converting radiation of a first energy level into radiation of a second energy level, as well as a photosensor for converting the radiation into an electrical current, each photosensor being associated with an amplifier element, is extended in such a manner that it can include a plurality of detector rows while the electronic noise is nevertheless reduced and at the same time a higher DQE is obtained; this is achieved by arranging a plurality of photosensors and the associated amplifier elements on the same substrate in integrated semiconductor technique.
摘要翻译： 一种用于检测由物体发射的电磁辐射的计算机断层摄影检测器，该检测器包括由多个检测器元件组成的至少一个检测器行，每个检测器元件包括用于将第一能级的辐射转换成辐射的闪烁体， 第二能级，以及用于将辐射转换成电流的光电传感器，每个与放大器元件相关联的光传感器以这样的方式被扩展，使得它可以包括多个检测器行，同时电子噪声仍然减少， 同时获得更高的DQE; 这是通过在集成半导体技术中在相同的衬底上布置多个光电传感器和相关联的放大器元件来实现的。
-
公开(公告)号：US5572257A
公开(公告)日：1996-11-05
申请号：US400427
申请日：1995-03-03
IPC分类号： A61B6/03 , G01T1/00 , G01T1/24 , H04N5/32 , H04N5/335 , H04N5/345 , H04N5/359 , H04N5/374 , H04N5/376 , H04N3/14
CPC分类号： H04N5/376 , H04N5/32 , H04N5/3597 , H04N5/374
摘要： In an arrangement of light-sensitive or X-ray sensitive sensors (S.sub.1,1, . . . , S.sub.2048,2048) arranged in a matrix in rows and columns, which sensors produce charge states in dependence upon the amount of incident radiation and each have an electrical switch, for each sensor row a switching line (33.sub.1, . . . , 33.sub.2048) via which the switches (3) can be activated so that the charge states of the sensors of the activated sensor row are read or reset simultaneously via associated read lines (8, 9, 10), there is provided a reset device (30a, 30b) for resetting the charge states of previously read sensor rows, which device activates at least one of the previously read sensor rows, which activates another of the previously read sensor rows after a predetermined number of clock pulses of a reset clock signal (T.sub.32), and which deactivates each activated sensor row a predetermined number of clock pulses after its activation.
摘要翻译： 在以行和列排列成矩阵的感光或X射线敏感传感器（S1,1，...，S2048,2048）的布置中，这些传感器根据入射辐射量和每个传感器产生电荷状态 具有电开关，对于每个传感器行，可以激活开关（3）的开关线（331，...，332048），使得激活的传感器行的传感器的充电状态通过 提供了一种用于重置先前读取的传感器行的电荷状态的复位装置（30a，30b），该装置激活先前读取的传感器行中的至少一个，其激活另一个 先前读取的传感器行在复位时钟信号（T32）的预定数量的时钟脉冲之后，并且在其激活之后使每个激活的传感器行停用预定数量的时钟脉冲。
-
公开(公告)号：US5184018A
公开(公告)日：1993-02-02
申请号：US644713
申请日：1991-01-23
IPC分类号： H01L27/146 , H01L27/14 , H04N5/32 , H04N5/374 , H04N5/378
CPC分类号： H04N3/1575 , H04N3/1506 , H04N5/32
摘要： A matrix of light-sensitive or x-ray sensitive sensors (S.sub.1,1, . . . S.sub.2000,200) are arranged in rows and columns and generate charges in dependence on the amount of incident radiation. The sensors comprise a respective electric switch (3) and are constructed, like the electric switches (3), of thin-film technology. Each sensor row has a switching line (5, 6, . . . , 7) via which the switches can be activated so that the charges of the relevant activated sensor row are simultaneously output via read lines (8, 9, . . . , 10, . . . ). Transfer means convert the signals read in parallel into a serial output signal; in order to achieve an as favorable as possible noise behavior. An amplifier (11, 12, . . . , 13) is in each read line and is constructed as a silicon crystal and precedes the transfer means. During the read operations, the amplifiers simplify the signals read from the sensors (S.sub.1.1, . . . S.sub.2000,2000) connected to the relevant read line (8, 9, . . . , 10, . . . ).
摘要翻译： 光敏或X射线敏感传感器（S1,1，...，S2000,200）的矩阵以行和列排列，并根据入射辐射量产生电荷。 这些传感器包括相应的电开关（3），并且像电动开关（3）一样构成薄膜技术。 每个传感器行都有一个开关线（5,6，...，7），通过该开关线可以启动开关，使得相关激活的传感器行的电荷通过读取线（8,9，...， 10，...）。 传输装置将并行读取的信号转换为串行输出信号; 以达到尽可能有利的噪音行为。 放大器（11,12，...，13）位于每条读取线中，并被构造为硅晶体，并且在传送装置之前。 在读取操作期间，放大器简化从连接到相关读取线（8,9，...，10 ...）的传感器读取的信号（S1.1，...，S2000,2000）。
-
公开(公告)号：US08884239B2
公开(公告)日：2014-11-11
申请号：US12063769
申请日：2006-07-27
IPC分类号： G01T1/164
CPC分类号： G01T1/1642
摘要： A detector arrangement providing imaging information at the edge of the scintillator is provided. The detector arrangement provides complete information and improved spatial resolution. SiPMs can be used in place of PMTs in order to provide the geometrical coverage of the scintillator and improved spatial resolution. With such detector arrangements, the spatial resolution can be under 2 mm. Furthermore, the overall thickness of the detector can be substantially reduced and depth of interaction resolution is also improved.
摘要翻译： 提供了一种在闪烁体边缘处提供成像信息的检测器装置。 检测器布置提供完整的信息和改进的空间分辨率。 可以使用SiPM代替PMT，以提供闪烁体的几何覆盖和改善的空间分辨率。 利用这种检测器布置，空间分辨率可以在2mm以下。 此外，可以显着地减少检测器的总体厚度，并且还提高了相互作用分辨率的深度。
-
公开(公告)号：US08779366B2
公开(公告)日：2014-07-15
申请号：US12777285
申请日：2010-05-11
申请人： Herfried Wieczorek
发明人： Herfried Wieczorek
IPC分类号： G01T1/164 , G01T1/29 , G01T1/20 , H01L27/146
CPC分类号： H01L27/14663 , A61B6/037 , G01T1/2018 , G01T1/2985
摘要： A radiation detector module for use in nuclear medical imagers employing radiation transmission or radiopharmaceuticals includes a rigid, optically opaque grid defined around a plurality of scintillator crystals. The grid defines a plurality of cells in which each scintillator crystal is completely disposed within in such a manner that an air layer exists between the scintillator crystal and the walls of the grid. A plurality of photoelectric detectors, each of which is associated with a corresponding scintillator crystal, are optically coupled to corresponding scintillator crystals by an optical coupling layer disposed within the cell.
摘要翻译： 用于使用辐射透射或放射性药物的核医学成像器中的辐射检测器模块包括围绕多个闪烁体晶体限定的刚性的光学不透明网格。 栅格限定多个单元，其中每个闪烁体晶体完全设置在闪烁体晶体和栅格壁之间存在空气层的方式。 每个与对应的闪烁体晶体相关联的多个光电检测器通过设置在单元内的光耦合层光耦合到相应的闪烁体晶体。
-
公开(公告)号：US08242453B2
公开(公告)日：2012-08-14
申请号：US12488824
申请日：2009-06-22
申请人： Herfried Wieczorek
发明人： Herfried Wieczorek
CPC分类号： G01T1/1648 , G01T1/1615
摘要： A imaging system for acquiring an image of a subject comprising a gantry (810) having a plurality of detection modules (812). Each detection module comprising a radiation detector and a collimator adjacent a radiation receiving face of the detector. The collimator comprises a plurality of spaced slats and a body adjacent the slats which defines at least one elongated slit extending in an axial direction (824). The slit is arranged such that radiation (822) passes through the slit and between the slats to the detector. The body is opaque to the radiation. The detection modules have a common focus (820) and do not move during acquisition of the image.
摘要翻译： 一种用于获取对象图像的成像系统，包括具有多个检测模块（812）的台架（810）。 每个检测模块包括与检测器的辐射接收面相邻的辐射检测器和准直仪。 准直器包括多个间隔开的板条和邻近板条的主体，其限定沿轴向方向（824）延伸的至少一个细长狭缝。 狭缝被布置成使得辐射（822）穿过狭缝并且在板条之间穿过检测器。 身体对辐射是不透明的。 检测模块具有共同的焦点（820），并且在拍摄图像期间不移动。
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.027 秒)
