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. 发明授权

US08025817B2 Fluorescent ceramic and fabrication method thereof 有权
标题翻译：荧光陶瓷及其制造方法
公开(公告)号：US08025817B2
公开(公告)日：2011-09-27
申请号：US11569068
申请日：2005-05-12
申请人： Ludmila Bolyasnikova , Vladimir Demidenko , Elena Gorokhova , Olga Ovsyannikova , Olga Khristich , Herfried Wieczorek , Cornelis Reinder Ronda , Gunter Zeitler
发明人： Ludmila Bolyasnikova , Vladimir Demidenko , Elena Gorokhova , Olga Ovsyannikova , Olga Khristich , Herfried Wieczorek , Cornelis Reinder Ronda , Gunter Zeitler
IPC分类号： C04B35/547 , C04B35/50 , C04B35/053 , C09K11/77
CPC分类号： C04B35/645 , C04B35/547 , C04B35/64 , C04B2235/3224 , C04B2235/3229 , C04B2235/446 , C04B2235/5409 , C04B2235/5436 , C04B2235/656 , C04B2235/6581 , C04B2235/662 , C04B2235/77 , C04B2235/786 , C04B2235/9653 , C09K11/7771
摘要： The present invention relates to a fluorescent ceramic having the general formula Gd2O2S doped with M, whereby M represents at least one element selected form the group Ce, Pr, Eu, Tb, Yb, Dy, Sm and/or Ho, whereby said fluorescent ceramic comprises a single phase in its volume; to a method for manufacturing a fluorescent ceramic using single-axis hot pressing; a detector for detecting ionizing radiation and to a use of said detector for detecting ionizing radiation. The method for manufacture of a fluorescent ceramic material using a single-axis hot pressing, comprises the steps: a) selecting a pigment powder of Gd2O2S doped with M, and M represents at least one element selected from the group of Eu, Tb, Yb, Dy, Sm, Ho, Ce and/or Pr, whereby the grain size of said powder used for hot-pressing is of 1 μm, and said hot-pressing is carried out at—a temperature of 1000° C. to 1400° C.; and/or—a pressure of 100 Mpa to 300 MPa; air annealing at a temperature of 700° C. to 1200° for a time period of 0.5 hours to 30 hours.
摘要翻译：本发明涉及掺杂有M的具有通式Gd 2 O 2 S的荧光陶瓷，其中M表示选自Ce，Pr，Eu，Tb，Yb，Dy，Sm和/或Ho的至少一种元素，由此所述荧光陶瓷包括其体积中的单相; 涉及使用单轴热压制造荧光陶瓷的方法; 用于检测电离辐射的检测器和用于检测电离辐射的所述检测器的用途。使用单轴热压制造荧光陶瓷材料的方法包括以下步骤：a）选择掺杂有M的Gd 2 O 2 S的颜料粉末，M表示选自Eu，Tb，Yb中的至少一种元素，Dy，Sm，Ho，Ce和/或Pr，其中用于热压的所述粉末的晶粒尺寸为1μm，所述热压在1000℃至1400℃的温度下进行 C。; 和/或 - 100MPa〜300MPa的压力; 在700℃至1200℃的温度下进行空气退火0.5小时至30小时。

2. 发明申请

US20100176301A1 HIGH RESOLUTION MEDICAL IMAGING DETECTOR 有权
标题翻译：高分辨率医学成像检测器
公开(公告)号：US20100176301A1
公开(公告)日：2010-07-15
申请号：US12063769
申请日：2006-07-27
申请人： Herfried Wieczorek , Andreas Goedicke , Thomas Frach
发明人： Herfried Wieczorek , Andreas Goedicke , Thomas Frach
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。

3. 发明申请

US20060243913A1 Detector element for spatially resolved detection of gamma radiation 有权
标题翻译：用于空间分辨检测γ辐射的检测元件
公开(公告)号：US20060243913A1
公开(公告)日：2006-11-02
申请号：US10554342
申请日：2004-04-13
申请人： Michael Overdick , Augusto Nascetti , Herfried Wieczorek
发明人： Michael Overdick , Augusto Nascetti , Herfried Wieczorek
IPC分类号： G01T1/20
CPC分类号： G01T1/2008 , G01T1/2018
摘要： The invention relates to a detector element (1) for gamma radiation, which is particularly suitable for use in a PEF apparatus. The detector element (1) consists of two or more different conversion units (11, 12), which react to the absorption of a gamma quantum (y) with light emissions (λ1, λ2) of different spectral composition. A photodetector arrangement (30) may therefore discriminate between the sites of origin of the light emissions by means of their spectral characteristics.
摘要翻译：本发明涉及用于γ辐射的检测器元件（1），其特别适用于PEF装置。检测器元件（1）由两个或更多个不同的转换单元（11,12）组成，它们与具有光发射的λ量子（y）的吸收相反应（λ1， 2）不同的光谱组成。因此，光电检测器装置（30）可以通过它们的光谱特性来区分光发射的原点。

4. 发明授权

US5194736A X-ray examination apparatus including a matrix of sensors and device measuring exposure of groups of sensors during execution of an X-ray exposure 失效
标题翻译： X射线检查装置，包括传感器矩阵和测量X射线曝光执行期间传感器组的接触装置
公开(公告)号：US5194736A
公开(公告)日：1993-03-16
申请号：US789221
申请日：1991-11-07
申请人： Hendrik J. Meulenbrugge , Ulrich Schiebel , Herfried Wieczorek
发明人： Hendrik J. Meulenbrugge , Ulrich Schiebel , Herfried Wieczorek
IPC分类号： H05G1/44 , H05G1/64
CPC分类号： H05G1/64 , H05G1/44 , H04N5/32
摘要： An X-ray examination apparatus includes a sensor matrix (41) with sensors (1) which are arranged in rows and columns and each of which comprises an X-ray sensitive photosensor element (11) and a storage capacitance (12) which is connected parallel thereto. First electrodes of the sensors are connected to a counter-electrode (2) which receives a direct voltage, second electrodes being connected to an electric switch (13) provided for each sensor. For exposure measurement the currents flowing through the counter-electrode (electrodes) (2) and/or the electric switches (13) after the brief closing of the electric switches (13) and before the reading of the charges are used to measure and/or correct the exposure of groups of the sensors during the execution of an X-ray exposure.
摘要翻译： X射线检查装置包括具有传感器（1）的传感器矩阵（41），传感器（1）以行和列排列，每个传感器矩阵包括连接有X射线敏感光电元件（11）和存储电容（12）与其平行。传感器的第一电极连接到接收直接电压的对电极（2），第二电极连接到为每个传感器提供的电开关（13）。对于曝光测量，在电开关（13）短暂关闭之后和在读取电荷之前，流过对电极（电极）（2）和/或电开关（13）的电流被用于测量和/ 或者在执行X射线曝光期间校正传感器组的曝光。

5. 发明授权

US08891726B2 Multiple-source imaging system with flat-panel detector 有权
标题翻译：具有平板检测器的多源成像系统
公开(公告)号：US08891726B2
公开(公告)日：2014-11-18
申请号：US12864880
申请日：2009-02-02
申请人： Herfried Wieczorek , Gereon Vogtmeier
发明人： Herfried Wieczorek , Gereon Vogtmeier
IPC分类号： G06K9/00 , A61B6/00 , A61B6/03
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 dimension, 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。

6. 发明授权

US08692681B2 Dynamic PET imaging with isotope contamination compensation 有权
标题翻译：动态PET成像与同位素污染补偿
公开(公告)号：US08692681B2
公开(公告)日：2014-04-08
申请号：US13382191
申请日：2010-06-15
申请人： Herfried Wieczorek , Frank O. Thiele , Manoj V. Narayanan
发明人： Herfried Wieczorek , Frank O. Thiele , Manoj V. Narayanan
IPC分类号： G08B21/00
CPC分类号： G01T1/2985 , A61B6/037
摘要： A nuclear imaging system includes a scanner (8), such as a PET scanner. A patient is injected with a [13N]ammonia radioisotope tracer which is contaminated with a small percent of 18F contamination. The scanner receives radiation from the injected tracer and a reconstruction processor (28) reconstructs the detected radiation into image representations. A calibration processor (16) generates an estimated decay curve based on the proton bombardment and a priori information about the tracer. An activity meter (42) measures radiation emitted from a sample of the tracer and a dose calibrator (44) determines a decay curve from the measured radiation. The detected radiation is corrected with one of the decay curves during reconstruction or a correction processor (50) corrects reconstructed images with one or both of the decay curves. A display (14) displays uncorrected reconstructed images and the decay curve and/or the corrected images.
摘要翻译：核成像系统包括诸如PET扫描仪的扫描器（8）。注射一个[13N]氨放射性同位素示踪剂，其被少量的18F污染物污染。扫描仪接收来自被注入示踪剂的辐射，并且重建处理器（28）将检测到的辐射重建成图像表示。校准处理器（16）基于质子轰击和关于示踪器的先验信息产生估计衰减曲线。活性计量器（42）测量从示踪剂的样品发射的辐射，剂量校准器（44）从测量的辐射确定衰减曲线。在重建过程中用一个衰减曲线来校正检测到的辐射，或者校正处理器（50）用一个或两个衰减曲线校正重建图像。显示器（14）显示未校正的重建图像和衰减曲线和/或校正图像。

7. 发明申请

US20120098671A1 DYNAMIC PET IMAGING WITH ISOTOPE CONTAMINATION COMPENSATION 有权
标题翻译：动态PET成像与同位素污染补偿
公开(公告)号：US20120098671A1
公开(公告)日：2012-04-26
申请号：US13382191
申请日：2010-06-15
申请人： Herfried Wieczorek , Frank O. Thiele , Manoj V. Narayanan
发明人： Herfried Wieczorek , Frank O. Thiele , Manoj V. Narayanan
IPC分类号： G08B21/00 , A61B6/00
CPC分类号： G01T1/2985 , A61B6/037
摘要： A nuclear imaging system includes a scanner (8), such as a PET scanner. A patient is injected with a [13N]ammonia radioisotope tracer which is contaminated with a small percent of 18F contamination. The scanner receives radiation from the injected tracer and a reconstruction processor (28) reconstructs the detected radiation into image representations. A warning generator (12) generates warnings to the clinician concerning the effects of the 18F contamination. A calibration processor (16) generates an estimated decay curve based on a time since the end of the proton bombardment which created the tracer and a priori information about the tracer. An activity meter (42) measures radiation emitted from a sample of the tracer and a dose calibrator (44) determines a decay curve from the measured radiation. Either the detected radiation is corrected in accordance with one of the decay curves during reconstruction or a correction processor (50) corrects reconstructed images in accordance with one or both of the decay curves. A display (14) displays uncorrected reconstructed images and the decay curve and/or the corrected images.
摘要翻译：核成像系统包括诸如PET扫描仪的扫描器（8）。注射一个[13N]氨放射性同位素示踪剂，其被少量的18F污染物污染。扫描仪接收来自被注入示踪剂的辐射，并且重建处理器（28）将检测到的辐射重建成图像表示。警告发生器（12）向临床医生发出关于18F污染的影响的警告。校准处理器（16）基于自产生示踪剂的质子轰击结束以及关于示踪剂的先验信息之后的时间产生估计衰减曲线。活性计量器（42）测量从示踪剂的样品发射的辐射，剂量校准器（44）从测量的辐射确定衰减曲线。根据重建期间的衰减曲线之一校正检测到的辐射，或者校正处理器（50）根据衰减曲线中的一个或两个来校正重建图像。显示器（14）显示未校正的重建图像和衰减曲线和/或校正图像。

8. 发明申请

US20090032716A1 NUCLEAR MEDICINE IMAGING SYSTEM WITH HIGH EFFICIENCY TRANSMISSION MEASUREMENT 审中-公开
标题翻译：具有高效率传输测量的核医学成像系统
公开(公告)号：US20090032716A1
公开(公告)日：2009-02-05
申请号：US12282911
申请日：2007-03-05
申请人： Herfried Wieczorek , Michael J. Petrillo , Carsten Degenhardt
发明人： Herfried Wieczorek , Michael J. Petrillo , Carsten Degenhardt
IPC分类号： G01T1/166
CPC分类号： G01T1/1648 , A61B6/032 , A61B6/037 , G01T1/1615 , G01T1/2985
摘要： A nuclear medicine imaging system that includes a plurality of detectors arranged about an imaging region. A transmission source can be provided opposite the detectors and rotating about the imaging region to obtain different imaging angles. The nuclear imaging system provides for the ability to acquire high sensitivity transmission data with high emission data spatial resolution.
摘要翻译：一种核医学成像系统，包括围绕成像区域布置的多个检测器。传输源可以与检测器相对地设置并围绕成像区域旋转以获得不同的成像角度。核成像系统提供了以高发射数据空间分辨率获取高灵敏度传输数据的能力。

9. 发明申请

US20060056593A1 X-ray examination apparatus 有权
标题翻译： X光检查仪
公开(公告)号：US20060056593A1
公开(公告)日：2006-03-16
申请号：US10535058
申请日：2003-10-27
申请人： Herfried Wieczorek
发明人： Herfried Wieczorek
IPC分类号： H05G1/58 , H05G1/54
CPC分类号： H01L27/14676
摘要： An x-ray examination apparatus comprises an x-ray source and an x-ray detector. The x-ray detector includes a photoconductor to derive electric charges from incident x-radiation and read-out elements which derive electrical pixel-signals from the electric charges from the photoconductor. A central group of the read-out elements is located in a central region of the x-ray detector and a peripheral group of the read-out elements is located in a peripheral region which surrounds the central region. The x-ray examination apparatus being provided with a selection system to select the central group of read-out elements so as to supply pixel-signals from the central group of read-elements to the output circuit. The selection system may include an encompassing electrode to drain electric charges from the peripheral group. Or the selection system shields the peripheral group from x-rays.
摘要翻译： x射线检查装置包括x射线源和x射线检测器。 X射线检测器包括光电导体，以从入射的X射线和读出元件导出电荷，该元件从光电导体得到电子像素信号。读出元件的中心组位于x射线检测器的中心区域，并且读出元件的外围组位于围绕中心区域的外围区域中。 X射线检查装置设置有选择系统，以选择读出元件的中心组，以便将来自读取元件的中心组的像素信号提供给输出电路。选择系统可以包括围绕电极排出来自周边组的电荷。或者选择系统屏蔽外围组与X射线。

10. 发明申请

US20050258369A1 Radiation detector 有权
标题翻译：辐射检测器
公开(公告)号：US20050258369A1
公开(公告)日：2005-11-24
申请号：US10527890
申请日：2003-08-04
申请人： Herfried Wieczorek
发明人： Herfried Wieczorek
IPC分类号： G01T7/00 , G01T1/161 , G01T1/20 , G01T1/24 , G01T1/29 , H01L27/14 , H01L31/09 , G01T1/164
CPC分类号： G01T1/1615 , G01T1/2018 , G01T1/2985
摘要： A radiation detector comprises a plurality of detector units and x-ray absorption members placed between the respective detector units. An individual detector unit includes a sensor element and read-out circuitry. The x-ray absorption members have a wider portion and a narrower portion and the read-out circuitry is accommodated at the narrower portion of the x-ray absorption member. Hence, the read-out circuitry is shielded from incident x-rays by the wider portion.
摘要翻译：放射线检测器包括放置在各个检测器单元之间的多个检测器单元和x射线吸收构件。单独的检测器单元包括传感器元件和读出电路。 X射线吸收构件具有较宽的部分和较窄的部分，并且读出电路容纳在x射线吸收构件的较窄部分处。因此，读出电路被较宽的部分屏蔽入射的x射线。

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