Photon measurement front-end circuit

A front-end circuit and photon technology, applied in the circuit field, can solve problems such as complex interface, difficult implementation, complex circuit structure, etc., and achieve the effect of simple interface and convenient expansion

Active Publication Date: 2015-11-25
ZHONGPAI S&T SHENZHEN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that it requires a subsequent digital circuit to read out the digitized energy and time signals, and the interface between the photon measurement front-end circuit and the subsequent digital circuit is rel

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Embodiment Construction

[0018] In the following description, numerous details are provided in order to provide a thorough understanding of the invention. However, it will be appreciated by those skilled in the art that the following description relates only to preferred embodiments of the invention and that the invention may be practiced without one or more of these details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0019] According to one aspect of the present invention, a photon measurement front-end circuit is provided. figure 1 A schematic block diagram of a photon measurement front-end circuit 100 according to one embodiment of the present invention is shown.

[0020] Such as figure 1 As shown, the photon measurement front-end circuit 100 includes one or more signal processing circuits 110 and a main processing circuit 120 corresponding to one or more sets of sensor cells. Each of the one or more signal p...

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Abstract

The invention provides a photon measurement front-end circuit which comprises the components of one or a plurality of signal processing circuits which are in one-to-one correspondence with one or a plurality of sensor element sets, and a main processing circuit. Each signal processing circuit in the one or the plurality of signal processing circuits comprises the components of one or a plurality of front-end processing circuits which are in one-to-one correspondence with one or a plurality of sensor elements in a corresponding sensor element set, and a back-end processing circuit. The front-end processing circuit is used for receiving an initial current signal from a corresponding sensor element and outputting a pulse current signal when the amplitude of the initial current signal is larger than a current threshold. The back-end processing circuit is used for processing each pulse current signal from one or the plurality of front-end processing circuits for generating an output signal. The main processing circuit is used for measuring the photons which are detected by the one or the plurality of sensor element sets according to the output signal of each back-end processing circuit in the one or the plurality of signal processing circuits. The photon measurement front-end circuit has advantages of simple structure and easy expansion to an array.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a photon measurement front-end circuit. Background technique [0002] The front-end detection device of a high-energy photon (X-ray, gamma photon, etc.) measurement system generally includes three parts: a scintillation crystal, a photodetector (or photoelectric sensor) and a photon measurement front-end circuit. The interaction of high-energy photons with the scintillation crystal produces a group of lower-energy visible photons. The photoelectric sensor converts the light signal carried by the visible photon group into an electrical signal. The main purpose of the photon measurement front-end circuit is to obtain the energy and arrival time of high-energy photons by measuring the electrical signal generated by the photoelectric sensor. For example, in positron emission tomography (PET) and single photon emission tomography (SPECT) systems, gamma photons interact with scintillation cry...

Claims

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Application Information

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IPC IPC(8): G01T1/208
CPCG01T1/208
Inventor 龚政赵指向许剑锋黄秋彭旗宇
Owner ZHONGPAI S&T SHENZHEN CO LTD
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