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    • 3. 发明申请
    • MULTIPLEXING READOUT SCHEME FOR A GAMMA RAY DETECTOR
    • 用于伽马射线探测器的多重读取方案
    • US20110210255A1
    • 2011-09-01
    • US12714529
    • 2010-02-28
    • Chang Lyong KimDavid McDanielFloribertus P.M. Heukensfeldt Jansen
    • Chang Lyong KimDavid McDanielFloribertus P.M. Heukensfeldt Jansen
    • G01T1/20
    • G01T1/2985A61B6/037
    • A method for producing a PET image of a tissue using a PET scanner, the scanner comprising a plurality of scintillation crystals (70X/75X) and a plurality of detectors (71X/76X). The method comprises forming a first crystal group (160X) including a first subset of the plurality of crystals; forming a second crystal group (164X) including a second subset of the plurality of crystals, wherein crystals comprising the first crystal group (160X) are different from crystals comprising the second crystal group (164X); converting a first beam (120) striking one or more crystals of the first crystal group (70X/160X) to a first electrical signal (94); converting a second beam striking one or more crystals of the second crystal group (75X/164X) to a second electrical signal (98), wherein the second beam is scattered from the first beam; determining one or both of a first and a second timing relationship, wherein the first timing relationship (Δt2) is a time interval between a value of the first electrical signal (94) and a time reference (t1), and the second timing relationship (Δt3) is a time interval between a value of the second electrical signal (98) and the time reference (t1); correcting the second electrical signal (98) to produce a corrected second electrical signal using a correction factor derived from at least one of the first and the second timing relationships to compensate for energy in the second signal scattered from the first signal; and creating an image of the tissue (12) using the corrected second electrical signal.
    • 一种使用PET扫描仪生产组织的PET图像的方法,所述扫描器包括多个闪烁晶体(70X / 75X)和多个检测器(71X / 76X)。 该方法包括形成包括多个晶体的第一子集的第一晶体组(160X) 形成包含多个晶体的第二子集的第二晶体组(164X),其中包含第一晶体组(160X)的晶体与包含第二晶体组(164X)的晶体不同; 将第一晶体组(70X / 160X)的一个或多个晶体的第一光束(120)转换成第一电信号(94); 将第二晶体组(75X / 164X)的一个或多个晶体的第二光束转换成第二电信号(98),其中所述第二光束从所述第一光束散射; 确定第一和第二定时关系中的一个或两个,其中所述第一定时关系(&Dgr; t2)是所述第一电信号(94)的值与时间基准(t1)之间的时间间隔和所述第二定时 关系(&Dgr; t3)是第二电信号(98)的值与时间基准(t1)之间的时间间隔; 使用从第一和第二定时关系中的至少一个导出的校正因子校正第二电信号(98)以产生校正的第二电信号,以补偿从第一信号散射的第二信号中的能量; 以及使用校正的第二电信号创建组织(12)的图像。
    • 10. 发明申请
    • Cross-slit collimator method and system
    • 横切准直仪的方法和系统
    • US20080142719A1
    • 2008-06-19
    • US11639786
    • 2006-12-15
    • James William HuggJorge UribeFloribertus P.M. Heukensfeldt Jansen
    • James William HuggJorge UribeFloribertus P.M. Heukensfeldt Jansen
    • G01T1/166
    • G21K1/04A61B6/032A61B6/037
    • Collimator assemblies that include an outer slit collimator having one or more slits therein, and an inner slit collimator having one or more slits therein are provided. Imaging systems that include a collimator assembly and a detector array are also provided. The collimator assembly includes an outer slit collimator having one or more slits therein. The collimator assembly further includes an inner slit collimator having one or more slits therein. The imaging system also includes a detector array configured to detect gamma rays emanating from a field of view that pass through one or more apertures defined by the collimator assembly. The detector array is further configured to generate one or more signals in response to the detected gamma rays. Methods of imaging a field of view using the imaging system are also provided.
    • 包括其中具有一个或多个狭缝的外部狭缝准直器和其中具有一个或多个狭缝的内部狭缝准直器的准直器组件。 还提供了包括准直器组件和检测器阵列的成像系统。 准直器组件包括其中具有一个或多个狭缝的外部狭缝准直器。 准直器组件还包括其中具有一个或多个狭缝的内部狭缝准直器。 成像系统还包括检测器阵列,其被配置为检测从通过由准直器组件限定的一个或多个孔的视场发出的伽马射线。 检测器阵列还被配置为响应于检测到的伽马射线产生一个或多个信号。 还提供了使用成像系统对视场进行成像的方法。