Method and device for digitalizing scintillation pulse

A scintillation pulse and pulse technology, which is applied in the field of positron emission tomography imaging equipment to achieve the effects of simplifying system structure, improving integration and reducing system power consumption

Active Publication Date: 2012-12-26
RAYCAN TECH CO LTD SU ZHOU
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Problems solved by technology

[0005] Therefore, in view of the problems existing in the existing scintillation pulse acquisition and processing technology, it is necessary to provide a new metho...

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  • Method and device for digitalizing scintillation pulse
  • Method and device for digitalizing scintillation pulse

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Embodiment Construction

[0040] The invention discloses a method and device for digitizing scintillation pulses which can avoid using comparators, improve device integration and reduce system power consumption.

[0041] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] Such as figure 1 Shown, the scintillation pulse digitization method disclosed in the present invention, its steps are as follows:

[0043] (1) Set n threshold voltages V_th according to the characteristics of the flicker pulse, where n is an integer greater than 1 and ...

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Abstract

The invention provides a method for digitalizing a scintillation pulse. The method comprises the following steps of setting n threshold voltages V_th according to the characteristics of the scintillation pulse; forming a voltage comparison unit by n low voltage differential signal receiving ports, when the pulse to be sampled exceeds any threshold, the voltage comparison unit outputs a state transition and a threshold voltage corresponding to the state transition; performing digitalization sampling for the time of the state transition by a time digital converter; identifying the threshold voltage corresponding to the state transition synchronously, obtaining scintillation pulse voltage time pair and finishing digitalizing the scintillation pulse. A device for digitalizing the scintillation pulse comprises a scintillation pulse converting unit, a threshold comparison unit, a time digitalization unit and a data processing and transmitting unit. According to the method and the device provided by the invention, threshold comparison can be realized through a digital differential interface in a field programmable gate array, and the voltage time pair of the scintillation pulse can be obtained, thereby realizing digitalization of the scintillation pulse, greatly simplifying the system structure, improving integration degree of the system and reducing system power consumption.

Description

technical field [0001] The invention relates to the field of positron emission tomography equipment, in particular to a method and device for collecting and processing scintillation pulses in the positron emission tomography equipment. Background technique [0002] Positron Emission Tomography (PET) captures the gamma photons emitted by positron annihilation in the human body to obtain the distribution of tracers labeled with positron nuclides in the human body, and then obtain organ functions. , metabolism and other pathophysiological characteristics. The accuracy of obtaining energy, position and time information carried by gamma photons directly affects the imaging performance of the system. The scintillation pulse acquisition and processing unit is the key core component of the PET system. Its main function is to process the scintillation pulse formed by the front-end detector and obtain the energy, position and time information carried by the gamma photons. In order t...

Claims

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Application Information

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IPC IPC(8): H03M1/12
CPCG01T1/17G01T1/20H03M1/127G01T1/208G04F10/005H03M1/1245
Inventor 谢庆国奚道明温惠华刘祥刘苇
Owner RAYCAN TECH CO LTD SU ZHOU
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