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发明公开
CN101779144A 用于从撞击X射线光子生成可计数脉冲的设备和方法以及对应的成像装置 有权

用于从撞击X射线光子生成可计数脉冲的设备和方法以及对应的成像装置
摘要：
本发明涉及一种用于在成像装置(16)中、尤其是在计算机断层摄影机中从撞击X射线光子(12、14)生成可计数脉冲(30)的设备(10)，所述设备(10)包括适于将由撞击光子(12、14)生成的电荷脉冲(20)转换成电信号(22)的前置放大元件(18)，和具有反馈回路(28)并适于将所述电信号(22)转换成电脉冲(30)的整形元件(26)，其中，延迟电路(38)连接至所述反馈回路(28)，从而使得延长了所述反馈回路(28)收集所述电信号(22)的电荷的时间，以便提高在所述整形元件(26)的输出(56)处的所述电脉冲(30)的幅度。本发明还涉及对应的成像装置(16)和对应的方法。
摘要（英）：

The present invention relates to an apparatus (10) for generating countable pulses (30) from impinging X-ray photons (12, 14) in an imaging device (16), in particular in a computer tomograph, the apparatus (10) comprising a pre-amplifying element (18) adapted to convert a charge pulse (20) generated by an impinging photon (12, 14) into an electrical signal (22) and a shaping element (26) having afeedback loop (28) and adapted to convert the electrical signal (22) into an electrical pulse (30), wherein a delay circuit (38) is connected to the feedback loop (28) such that a time during which the feedback loop (28) collects charges of the electrical signal (22) is extended in order to improve an amplitude of the electrical pulse (30) at an output (56) of the shaping element (26). The invention also relates to a corresponding imaging device (16) and a corresponding method.

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