专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

AU2001262881B2 Radiation detection apparatus and method 未知
公开(公告)号：AU2001262881B2
公开(公告)日：2005-03-24
申请号：AU2001262881
申请日：2001-06-05
申请人： XCOUNTER AB
发明人： PESKOV VLADIMIR , FRANCKE TOM
IPC分类号： G01T1/20 , G01T20060101 , G01T1/164 , G01T1/208 , G01T1/28 , G01T1/29 , H01J1/34 , H04N5/32 , G01T001/20 , G01T001/28
摘要： An apparatus and method for detecting ionizing radiation are presented. The apparatus includes a scintillator adapted to convert incident ionizing radiation into light; a photocathode adapted to release photoelectrons in dependence on the light; an electron avalanche amplifier adapted to avalanche amplify the photoelectrons; and a readout arrangement adapted to detect the avalanche amplified electrons. The electron avalanche amplifier in one implementation is a gaseous avalanche amplifier including an array of amplification regions. A protective layer is provided to prevent the avalanche gas from coming into contact with the photocathode.

2. 发明申请

US20040262528A1 Small field view gamma camera 审中-公开
标题翻译：小视野伽马相机
公开(公告)号：US20040262528A1
公开(公告)日：2004-12-30
申请号：US10609142
申请日：2003-06-26
发明人： Roman Zaikin , Marcia Suzuki
IPC分类号： G01T001/20
CPC分类号： G01T1/1644 , A61B6/4258
摘要： A gamma camera system having a small field of view that includes a plurality of modules, a module support board on which the modules are mounted, a module interface board, signal amplifier and detection logic mounted on the module support board, a computer interface board mounted in a computer and connected to an internal bus in the computer, and a serial connection between the module support board and the computer interface board. Each module includes a scintillation crystal array, a photodiode array coupled to the scintillation crystal array, a first PETRIC circuit coupled to the array of photodiodes in parallel to determine the crystal of highest peak analog signal and its address in the array and provide an output thereof. A second PETRIC circuit receives the analog outputs of the first PETRIC circuits and determines the crystal of the highest peak analog signal of all the modules and its address in the arrays and provides an output thereof. An analog-to-digital converter receives the output of the second PETRIC and outputs a corresponding digital signal. A first programmable field gate array is mounted on the module interface board to receive the digital signals and to output in serial fashion. A serial connection between the module interface board and the computer interface board receives the serialized digital signals output by the first programmable field gate array. A second programmable field gate array mounted on the computer interface board receives the serialized digital signals from the serial connection. A microprocessor with memory is mounted on the computer interface board to receive the digital signals from the second programmable field gate array, store the signals and output the signals in parallel fashion, and a circuit mounted on the computer interface board to receive the signals in parallel from the microprocessor and to forward them to the computer via its internal bus.

3. 发明申请

US20040262527A1 Radiation detector and a method of manufacturing the detector 有权
标题翻译：辐射探测器及其制造方法
公开(公告)号：US20040262527A1
公开(公告)日：2004-12-30
申请号：US10847393
申请日：2004-05-18
发明人： Junichi Ooi
IPC分类号： G01T001/20
CPC分类号： G01T1/1644 , A61B6/037 , G01T1/202
摘要： A radiation detector has a lattice frame laid in a light guide. The lattice frame is prepared by combining thin strips of optical elements, i.e. light reflecting elements. In manufacture, the lattice frame is placed in a recess of a trestle, and a thoroughly defoamed, optically transparent liquid resin is poured into the recess. After the liquid resin cures, the lattice frame and the resin form the light guide which is then removed from the trestle. The light guide is then contoured by cutting and polishing. This construction allows a thickness and angles of the light reflecting elements freely, and has no gaps formed between the reflecting elements and transparent resin, thereby assuring high reflecting efficiency.
摘要翻译：放射线检测器具有放置在光导中的格子框架。格子框架通过组合光学元件的薄带，即光反射元件来制备。在制造中，将格子框架放置在支架的凹部中，并将彻底消泡的光学透明液体树脂注入到凹部中。液体树脂固化后，网格框架和树脂形成导光体，然后从支架上取出。然后通过切割和抛光对光导进行轮廓。这种结构允许光反射元件的厚度和角度自由，并且在反射元件和透明树脂之间没有形成间隙，从而确保高的反射效率。

4. 发明申请

US20040251420A1 X-ray detectors with a grid structured scintillators 审中-公开
标题翻译：具有栅格结构的闪烁体的X射线探测器
公开(公告)号：US20040251420A1
公开(公告)日：2004-12-16
申请号：US10866408
申请日：2004-06-12
发明人： Xiao-Dong Sun
IPC分类号： G01J001/00 , G01T001/24 , G01T001/20
CPC分类号： G01T1/2018 , G01T1/202
摘要： Method, components, design and fabrication process of a advanced X-ray flat panel detector (FPD), with built-in anti-scattering grid to reduce the X-ray scattering are disclosed. We further disclose two methods in the new X-ray detector: In the first method, the grid is placed on top of X-ray scintillator layer of a FPD, the pixels of X-ray FPD underneath are aligned with the hole structures of anti-scatter grids. The high performance anti-scatter grid applied and aligned to the flat panel detector (FPD) pixel-by-pixel can significantly reduce the noise from the scattered X-rays. The key advantages of the improved art are substantial reduction of grid shadow, improved image contrast-to-noise ratio (CNR) and minimized attenuation of direct X-rays. The new FPD with built-in grid may significantly enhance X-ray imaging system performance for a FPD based digital detection system with high image quality, high throughput and low cost for many X-ray imaging applications. In the second method, the grid may be fully or partially filled with X-ray scintillators and the combined sensor plate can be applied as X-ray sensor on a FPD. This plate integrates X-ray scintillator with anti-scatter grid. Using this scintillator plate on FPD, the key X-ray detector performances, such as image contrast-to-noise ratio (CNR), modulation transfer function (MTF), and detective quantum efficiency (DQE) may be improved significantly. The design of the detector plate allows flexible choices of the various scintillators to meet specific requirements of an X-ray imaging system, without sacrificing the detector performances such as the scattering X-ray rejection and MTF.
摘要翻译：公开了先进的X射线平板检测器（FPD）的方法，部件，设计和制造工艺，内置防散射栅格以减少X射线散射。我们在新的X射线检测器中进一步披露了两种方法：第一种方法是将栅格放置在FPD的X射线闪烁体层的顶部，X射线FPD下面的像素与反射镜的孔结构对齐散射网格逐像素应用和对准平板检测器（FPD）的高性能防散射栅极可以显着降低散射X射线的噪声。改进的艺术的关键优点是大大减少了网格阴影，改善了图像对比噪声比（CNR）和最小化的直接X射线衰减。具有内置网格的新型FPD可以显着增强基于FPD的数字检测系统的X射线成像系统性能，具有高图像质量，高吞吐量和低成本的X射线成像应用。在第二种方法中，栅格可以用X射线闪烁体完全或部分地填充，并且组合的传感器板可以作为X射线传感器应用于FPD。该板将X射线闪烁体与防散射网格集成。在FPD上使用闪烁体板，可以显着提高关键的X射线检测器性能，如图像对比噪声比（CNR），调制传递函数（MTF）和检测量子效率（DQE）。检测器板的设计允许各种闪烁体的灵活选择以满足X射线成像系统的特定要求，而不牺牲检测器性能，例如散射X射线抑制和MTF。

5. 发明申请

US20040232342A1 Grid array having graduated reflector walls 有权
标题翻译：栅格阵列具有渐变反射器壁
公开(公告)号：US20040232342A1
公开(公告)日：2004-11-25
申请号：US10441681
申请日：2003-05-20
申请人： CTI PET Systems, Inc.
发明人： Mehmet Aykac , Matthias J. Schmand , Niraj K. Doshi , Charles W. Williams , Ronald Nutt
IPC分类号： G01T001/20
CPC分类号： G01T1/202 , B33Y70/00 , B33Y80/00 , G01T1/2002
摘要： A method for fabricating an array adapted to receive a plurality of scintillators for use in association with an imaging device. The method allows the creation of a detector array such that location of the impingement of radiation upon an individual scintillator detector is accurately determinable. The array incorporates an air gap between all the scintillator elements. Certain scintillators may have varying height reflective light partitions to control the amount of light sharing which occurs between elements. Light transmission is additionally optimized by varying the optical transmission properties of the reflective light partition, such as by varying the thickness and optical density of the light partitions. In certain locations, no light partitions exist, thereby defining an air gap between those elements. The air gap allows a large increase in the packing fraction and therefore the overall sensitivity of the array.
摘要翻译：一种用于制造适于接收与成像装置相关联使用的多个闪烁体的阵列的方法。该方法允许创建检测器阵列，使得能够准确地确定单个闪烁体检测器上的辐射冲击位置。该阵列包括所有闪烁体元件之间的气隙。某些闪烁体可以具有变化的高度反射光分区，以控制在元件之间发生的光共享的量。通过改变反射光分区的光传输特性，例如通过改变光分区的厚度和光密度来另外优化透光。在某些位置，不存在光分区，从而在这些元件之间限定气隙。空气间隙允许包装分数大幅度增加，因此阵列的整体灵敏度增加。

6. 发明申请

US20040227092A1 COLLIMATOR ASSEMBLY FOR COMPUTED TOMOGRAPHY SYSTEM 失效
标题翻译：用于计算机图像系统的收缩器组件
公开(公告)号：US20040227092A1
公开(公告)日：2004-11-18
申请号：US10249859
申请日：2003-05-13
申请人： GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC
发明人： Paul Michael Ratzmann , Mark A. Kappel
IPC分类号： G01T001/20
CPC分类号： G01T1/1648
摘要： A detector assembly 18 for an imaging system 20 is provided comprising a plurality of scintillator elements 50 positioned within a scintillator pack 56. The scintillator pack 56 forms a scintillator pack upper surface 58 and a plurality of scintillator pack walls 60 positioned between the plurality of scintillator elements 50. A plurality of collimator elements 64 are mounted on the scintillator pack upper surface 58. Each of the plurality of collimator elements 50 is comprised of a stack laminated base 66 mounted to the scintillator pack upper surface 58 and a cast upper wall 68 formed on the stack laminated base 66.
摘要翻译：提供了一种用于成像系统20的检测器组件18，其包括位于闪烁体组件56内的多个闪烁器元件50.闪烁体组件56形成闪烁体组件上表面58和位于多个闪烁体之间的多个闪烁器组件壁60 多个准直器元件64安装在闪烁体组件上表面58上。多个准直器元件50中的每个准直器元件50由安装到闪烁体组件上表面58的堆叠层压基座66和形成的铸造上壁68组成在堆叠层叠基座66上。

7. 发明申请

US20040200966A1 Gamma-ray detection apparatus and method for positron emission tomography 审中-公开
标题翻译： γ射线检测装置及正电子发射断层扫描法
公开(公告)号：US20040200966A1
公开(公告)日：2004-10-14
申请号：US10475063
申请日：2004-04-27
发明人： David Ramsden
IPC分类号： G01T001/20
CPC分类号： A61B6/5205 , A61B6/037 , G01T1/202 , G01T1/2985
摘要： A scintillation detector comprising: an array of scintillation crystal elements (22); an array of detection elements (26); and a plurality of light guides (24) connecting each crystal element to multiple ones of the detection elements, so that a scintillation event in any one of the crystal elements gives rise to a signal being generated on a particular combination of the detection elements. This design allows a detection array with a relatively small number of elements, e.g. 61, to be used in conjunction with a scintillation array with a much larger number of elements, e.g. 400. High spatial resolution is thus achievable. Moreover, a high speed digital processor (28) can be used to provide rapid read out of the address of the crystal element where any scintillation event occurred.
摘要翻译：一种闪烁检测器，包括：闪烁晶体元件阵列（22）; 一组检测元件（26）; 以及将每个晶体元件连接到多个检测元件的多个光导（24），使得任何一个晶体元件中的闪烁事件产生在检测元件的特定组合上产生的信号。该设计允许具有相对较少数量的元件的检测阵列，例如， 61，与具有更多数量的元件的闪烁阵列结合使用。因此，可以实现高空间分辨率。此外，可以使用高速数字处理器（28）来提供快速读出发生任何闪烁事件的晶体元件的地址。

8. 发明申请

US20040056203A1 Method of localizing a scintillation event in a scintillation camera 失效
标题翻译：在闪烁照相机中定位闪烁事件的方法
公开(公告)号：US20040056203A1
公开(公告)日：2004-03-25
申请号：US10373287
申请日：2003-02-24
发明人： Iain Stark , Henry Seywerd , Michel Therrien
IPC分类号： G01T001/20
CPC分类号： G01T1/1642
摘要： A method of localizing a scintillation event in a scintillation camera is disclosed. The method comprises steps of (a) assuming an ideal situation where the photomultiplier tubes of the camera behave ideally according to an ideal position-intensity distribution curve and an ideal locus for each PM tube is determined from the ideal position-intensity distribution curve such that all of the ideal loci intersect at a single point, which corresponds to the position of a scintillation event; (b) establishing a position function representing the single point, the position function depending on the coordinates of the PM tubes and the radii of ideal loci; (c) when a scintillation event occurs, measuring outputs of the PM tubes; (d) determining radii of real loci for the PM tubes by using the outputs of the PM tubes and real position-intensity distribution curves; and (e) substituting into the position function the coordinates of the PM tubes, and the radii of the real loci for the radii of the ideal loci in order to estimate the position of the scintillation event.
摘要翻译：公开了一种在闪烁照相机中定位闪烁事件的方法。该方法包括以下步骤：（a）假定相机的光电倍增管理想地根据理想的位置 - 强度分布曲线行进的理想情况，并且从理想的位置 - 强度分布曲线确定每个PM管的理想轨迹，使得所有理想的轨迹在单个点相交，这对应于闪烁事件的位置; （b）建立表示单点的位置函数，取决于PM管的坐标和理想轨迹的半径的位置函数; （c）发生闪烁事件时，测量PM管的输出; （d）通过使用PM管的输出和实际位置 - 强度分布曲线来确定PM管的实际轨迹的半径; 以及（e）为了估计闪烁事件的位置，将PM管的坐标和理想轨迹的半径的实际轨迹的半径代入位置函数。

9. 发明申请

US20040056202A1 Time-to-voltage converter 失效
标题翻译：时间到电压转换器
公开(公告)号：US20040056202A1
公开(公告)日：2004-03-25
申请号：US10065179
申请日：2002-09-24
发明人： Naresh Kesavan Rao
IPC分类号： G01T001/20 , H03K005/22
CPC分类号： G01T1/2985 , G04F10/10
摘要： A time interval to voltage converter with very low nonlinearity for time stamping events. The converter automatically selects one of two clocks related to a reference clock and ensures that the time between an event edge to a clock edge is sufficiently large to properly operate a switch and yield very linear time-to-voltage conversion.
摘要翻译：电压转换器的时间间隔对于时间戳事件具有非常低的非线性。转换器自动选择与参考时钟相关的两个时钟之一，并确保事件边沿到时钟沿之间的时间足够大，以正确操作开关，并产生非常线性的时间 - 电压转换。

10. 发明申请

US20040021082A1 Asymmetrically placed cross-coupled scintillation crystals 有权
标题翻译：不对称放置的交叉耦合闪烁晶体
公开(公告)号：US20040021082A1
公开(公告)日：2004-02-05
申请号：US10356679
申请日：2003-01-31
申请人： Board of Regents, The University of Texas System
发明人： Wai-Hoi Wong , Jorge Uribe , Hossain Baghaei , Hongdi Li
IPC分类号： G01T001/20
CPC分类号： G01T1/1644 , A61B6/037 , G01T1/208
摘要： Systems and methods are described for asymmetrically placed cross-coupled scintillation crystals. A method includes coupling a plurality of photomultiplier tubes to a scintillation crystal array, the scintillation crystal array defining a plurality of corner edges, wherein a first corner edge of the plurality of corner edges is aligned with a first center of a first photomultiplier tube of the plurality of photomultiplier tubes and a second corner edge of the plurality of corner edges is not aligned with a second center of a second photomultiplier tube of the plurality of photomultiplier tubes.
摘要翻译：对于不对称放置的交叉耦合闪烁晶体描述了系统和方法。一种方法包括将多个光电倍增管耦合到闪烁晶体阵列，所述闪烁晶体阵列限定多个角边缘，其中所述多个角边缘的第一角边缘与所述多个角边缘的第一光电倍增管的第一中心对准多个光电倍增管和多个角边缘的第二角边缘不与多个光电倍增管的第二光电倍增管的第二中心对准。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式