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Method and device for acquiring time points when scintillation pulses exceed threshold values

A technology of scintillation pulse and acquisition method, which is applied in the fields of digital signal processing, photoelectric signal processing and radiation detection and measurement, which can solve the problem of inaccurate acquisition of time points.

Active Publication Date: 2015-05-20
RAYCAN TECH CO LTD SU ZHOU
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a method and device for obtaining the time point when the scintillation pulse crosses the threshold, which is used to solve the problem that the time point cannot be accurately obtained due to noise

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  • Method and device for acquiring time points when scintillation pulses exceed threshold values
  • Method and device for acquiring time points when scintillation pulses exceed threshold values
  • Method and device for acquiring time points when scintillation pulses exceed threshold values

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Embodiment Construction

[0035] The invention discloses a method and device for acquiring the time point when a scintillation pulse crosses a threshold, which is used to solve the problem that the time point cannot be accurately acquired due to noise.

[0036] 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.

[0037] Since the scintillation pulse signal can be a positive pulse signal or a negative pulse signal, the present invention describes both positive and negative pulses.

[0038] The method for obtaining the time point when the scintill...

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Abstract

A method for acquiring a time point where a glimmering pulse passes over a threshold. The method comprises the steps as follows: converting a relationship between a pulse and a threshold into high and low level signals; segmenting output level signals, wherein for a phase where a pulse signal passes over and is higher than a preset threshold and a phase where a pulse signal passes over and is lower than the preset threshold, the two phases respectively comprise several time points generated by several jumps, and the time point where a pulse passes over a threshold is recorded as any one jump time point or a weighted value of any two or more jump time points. By selecting one jump time point or weighting any two or more jump time points, the present invention obtains a more accurate time point where a pulse actually passes over a threshold using the acquired time of several jumps.

Description

technical field [0001] The invention relates to the fields of digital signal processing, photoelectric signal processing, and radiation detection and measurement, in particular to a method and device for acquiring the time point when a scintillation pulse crosses a threshold, which can be applied to high-energy particle detection and medical imaging equipment. Background technique [0002] In the fields of Positron Emission Tomography (PET) and radiation detection and measurement, scintillator detectors are often used for the detection of high-energy particles. Its basic working principle is: use scintillation crystals to convert high-energy particles into visible light, and then use photodetectors to convert them into electrical pulse signals. Typical electrical signals such as figure 1 shown. Information such as energy and time of high-energy particles can be obtained by further processing the electric pulse. [0003] Obtaining information on the timing of an electrical ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/135
CPCH03K5/08G01T1/20G04F13/02
Inventor 奚道明刘苇谢庆国
Owner RAYCAN TECH CO LTD SU ZHOU
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