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公开(公告)号：US4491732A
公开(公告)日：1985-01-01
申请号：US411419
申请日：1982-08-25
CPC分类号： G01T1/2018 , G01T1/1644
摘要： In a modular solid state detector of the type including a scintillator and diodes for converting x-ray flux to a measurable electrical signal, the diodes are mounted out of the path of incident x-radiation to minimize noise and to limit degradation. The resulting configuration reduces efficiency because the active diode area is limited and the length of the light path between the scintillator and diode is increased. In order to compensate for that reduction in efficiency, optical potting material is used to join the scintillator to the diodes in order to minimize light attenuation between those elements. In addition, the outer surface of the cured optical potting material is coated with a thin specular layer of silver to keep the light within the optical potting material and thus most efficiently reflected from the scintillator to the diode.
摘要翻译： 在包括用于将x射线通量转换成可测量电信号的闪烁体和二极管的模块化固态检测器中，二极管被安装在入射x辐射的路径之外，以使噪声最小化并限制退化。 所产生的配置降低了效率，因为有源二极管面积是有限的，并且闪烁体和二极管之间的光路长度增加。 为了补偿效率的降低，使用光封装材料将闪烁体连接到二极管，以便使这些元件之间的光衰减最小化。 此外，固化的光封装材料的外表面涂覆有薄的镜面银层，以将光保持在光封装材料内，从而最有效地从闪烁体反射到二极管。
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公开(公告)号：US4521689A
公开(公告)日：1985-06-04
申请号：US469195
申请日：1983-02-24
申请人： Dennis H. Pritzkow
发明人： Dennis H. Pritzkow
摘要： A modular radiation-detecting array composed of a plurality of detector modules having detector cells supported between upper and lower insulating substrates utilizes nut plates fastened to the insulating substrates for rigidly and releasably securing the detector modules between parallel frame members.
摘要翻译： 由多个检测器模块组成的模块化辐射检测阵列，其具有支撑在上下绝缘基板之间的检测器单元，利用紧固到绝缘基板的螺母板，用于将检测器模块刚性地和可释放地固定在平行框架构件之间。
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3.发明授权
公开(公告)号：US4429227A
公开(公告)日：1984-01-31
申请号：US335183
申请日：1981-12-28
CPC分类号： G01T1/2018 , G01T1/1644
摘要： A modular solid state x-radiation detector. A detector array is made up of a plurality of collimator plates having pockets formed in the planar surfaces thereof to carry scintillator bars, and dimensioned so that the edges of the scintillators are shielded by the pockets, yielding several advantages. Wider scintillator bars are thus possible, increasing quantum detection efficiency while guarding against energy dependent punch through at the edges of the scintillator, thereby to enhance spectral linearity. The arrangement also prevents x-rays from bypassing the scintillator, thus protecting the adhesive which bonds the scintillator to the plate and the photodiodes mounted behind the scintillator. A further benefit is an increase in optical transfer of light to the rear of the scintillator where the diode is mounted since there is a less severe aspect ratio of depth to width, reducing the number of reflections encountered by light travelling to the photodiode. The collimator plates are also provided with opposed legs which engage slots in a photosensor assembly to accurately align the photosensor and scintillator.
摘要翻译： 模块式固态x辐射探测器。 检测器阵列由多个准直器板构成，其具有形成在其平面表面中的凹穴，以携带闪烁棒，并且尺寸使得闪烁体的边缘被凹穴屏蔽，产生若干优点。 因此，更宽的闪烁棒可能，从而提高量子检测效率，同时防止闪烁体边缘处的能量依赖穿透，从而提高光谱线性。 该布置还防止X射线绕过闪烁体，从而保护将闪烁体粘合到板上的粘合剂和安装在闪烁体后面的光电二极管。 另外的好处是由于深度与宽度之间存在不太严重的纵横比，减少了光线传播到光电二极管所遇到的反射次数，所以光的安置在二极管安装的闪烁器的背面的光学传递增加。 准直板还设置有相对的腿，其接合光传感器组件中的狭槽以精确对准光传感器和闪烁体。
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公开(公告)号：US4496841A
公开(公告)日：1985-01-29
申请号：US481420
申请日：1983-04-01
CPC分类号： H01J47/02
摘要： The radiation detector employs a rigid stiffener plate fastened to the detector housing to translate the housing resonant frequency outside the band of frequencies associated with the detector signals containing imaging information. In this manner, microphonic noise induced by the resonating housing does not interfere with the desired signals and does not degrade image quality.
摘要翻译： 放射线检测器使用紧固到检测器壳体的刚性加强板，以将壳体谐振频率平移到与包含成像信息的检测器信号相关联的频率带之外。 以这种方式，由谐振壳体引起的麦克风噪声不会干扰所需的信号，并且不会降低图像质量。
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公开(公告)号：US4405863A
公开(公告)日：1983-09-20
申请号：US312557
申请日：1981-10-19
CPC分类号： H01J47/02
摘要： Improved end blocks for the electrode array of a multicell radiation detector support the array and isolate it from the interior walls of an enclosed ionization chamber. A plunger extends from the rear wall of each end block and is biased by a spring within the end block to bear against the rear wall of the detector chamber, biasing the electrode array forwardly against front spacers to position the front edges of the electrodes in equidistantly spaced relation to a x-ray transmissive window formed in the front wall of the detector housing. The bias exerted by the springs is adjustable. A tool is inserted into each end block during assembly of the detector to retract the plungers while the array is being positioned within the opened ionization chamber.The invention greatly reduces noise in the detector caused by microphonics, thus improving the integrity of the detected signal and permitting shorter scanning times and other advantages.
摘要翻译： 用于多单元辐射检测器的电极阵列的改进的端块支撑阵列并将其与封闭电离室的内壁隔离。 柱塞从每个端块的后壁延伸并且被端块内的弹簧偏压以抵靠检测器室的后壁，将电极阵列向前偏压抵靠前间隔件以将电极的前边缘等距地定位 与形成在检测器壳体的前壁中的x射线透射窗口间隔开。 弹簧施加的偏压是可调节的。 在组装检测器以在阵列被定位在打开的电离室内时收缩柱塞的工具被插入每个端块中。 本发明大大降低了由麦克风引起的检测器中的噪声，从而提高了检测信号的完整性，并允许更短的扫描时间和其他优点。
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