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    • 1. 发明授权
    • X-ray detector module
    • X光检测器模块
    • US06784432B2
    • 2004-08-31
    • US09994359
    • 2001-11-26
    • Herfried Karl Wieczorek
    • Herfried Karl Wieczorek
    • G01T120
    • G01T1/2018
    • An X-ray detector module (1) is provided, in which a preferably metallic carrier (3) forms tubular cells (4) in which there is provided a mixture of a binder (7) and scintillator particles (6). The absorption of X-rays by the scintillator particles (6) gives rise to the emission of light of a longer wavelength (&lgr;1, &lgr;2) that can be detected by a detector (5) arranged at the far end of the cells (4). In order to keep the light yield as high as possible, a difference of less than 20% is pursued between the refractive indices of the binder (7) and the scintillator particles (6) and/or nano-crystalline scintillator particles (6) of a size of between 1 and 100 nm are used. Preferably, the cell walls (3, 3′) are extended in the direction of incidence of the X-rays in order to form an anti-scatter grid above the detector.
    • 提供了一种X射线检测器模块(1),其中优选的金属载体(3)形成管状电池(4),其中提供了粘合剂(7)和闪烁体颗粒(6)的混合物。 由闪烁体颗粒(6)吸收的X射线会导致发射较长波长(λ1,λ2)的光,该波长可由布置在电池(4)的远端的检测器(5)检测, 。 为了保持光产率尽可能高,在粘合剂(7)和闪烁体颗粒(6)和/或纳米晶体闪烁体颗粒(6)的折射率之间追求小于20%的差异 使用1至100nm的尺寸。 优选地,细胞壁(3,3')在X射线的入射方向上延伸,以便在检测器上方形成防散射栅格。
    • 5. 发明授权
    • Event localization and fall-off correction by distance-dependent weighting
    • 通过距离相关加权的事件定位和落差校正
    • US06723993B2
    • 2004-04-20
    • US10298027
    • 2002-11-15
    • Steven E. CookeJohn F. VeselFrank P. DiFilippo
    • Steven E. CookeJohn F. VeselFrank P. DiFilippo
    • G01T120
    • G01T1/1647A61B6/037
    • A nuclear camera system includes a detector (12) for receiving radiation from a subject (14) in an exam region (16). The detector (12) includes a scintillation crystal (20) that converts radiation events into flashes of light. An array of sensors (22) is arranged to receive the light flashes from the scintillation crystal (20). Each of the photomultiplier sensors (22) generates a respective sensor output value in response to each received light flash. A processor (26) determines when each of the radiation events is detected. At least one of an initial position and an energy of each of the detected radiation events is determined in accordance with respective distances (d1 . . . d19) from a position of the detected event to the sensors (22). An image representation is generated from the initial positions and energies.
    • 核相机系统包括用于在检查区域(16)中接收来自被摄体(14)的辐射的检测器(12)。 检测器(12)包括将辐射事件转换成闪光的闪烁晶体(20)。 传感器阵列(22)布置成从闪烁晶体(20)接收闪光。 每个光电倍增管传感器(22)响应于每个接收到的闪光灯而产生相应的传感器输出值。 处理器(26)确定何时检测每个辐射事件。 根据从检测到的事件的位置到传感器(22)的相应距离(d1 ... d19)确定每个检测到的辐射事件的初始位置和能量中的至少一个。 从初始位置和能量产生图像表示。