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    • 5. 发明授权
    • X-ray detector having a large dynamic range
    • X射线探测器具有较大的动态范围
    • US06759658B2
    • 2004-07-06
    • US10067427
    • 2002-02-05
    • Michael OverdickWalter RuettenThomas Zaengel
    • Michael OverdickWalter RuettenThomas Zaengel
    • G01T100
    • G01N23/046G01N2223/419G01T1/17
    • The invention relates to an X-ray detector which includes at least one conversion unit (1) for converting absorbed X-ray quanta into electric charge signals, at least one evaluation unit (10) for amplifying and further processing the charge signals, and at least one data processing unit (11) for the acquisition, further processing and output of data. The charge signals are first amplified by an input amplifier (2) in the evaluation unit (10) after which they are evaluated in parallel in a counting channel (5) as well as in an integrator channel (7). The charge signals are then counted in the counting channel and the overall charge is integrated in the integrator channel as a measure of the energy delivered in the conversion unit (1). Because of the parallel presentation of the counting results and the integration results, more weight can be attached thereto in their respective range of the quantum flow that is optimum from a measuring point of view, so that the dynamic range of the X-ray detector is enlarged. Furthermore, additional information, for example, the mean absorption energy of the X-ray quanta, can be determined from the combination of the signals.
    • 本发明涉及一种X射线检测器,它包括用于将吸收的X射线量子转换为电荷信号的至少一个转换单元(1),用于放大和进一步处理电荷信号的至少一个评估单元(10) 至少一个用于采集,进一步处理和输出数据的数据处理单元(11)。 充电信号首先由评估单元(10)中的输入放大器(2)放大,之后它们在计数通道(5)以及积分器通道(7)中被并行评估。 然后在计数通道中计数充电信号,并将整体电荷作为在转换单元(1)中传送的能量的量度积分在积分器通道中。 由于计数结果和积分结果的并行呈现,可以在从测量的角度来看最佳的量子流的各自的范围内附加更多的权重,使得X射线检测器的动态范围为 放大 此外,可以从信号的组合来确定附加信息,例如,X射线量子的平均吸收能量。