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A Fast Judgment Method of Detector Gain State

A detector and fast technology, applied in the field of sensors, can solve problems such as inability to judge, achieve the effect of improving efficiency and reducing data analysis and processing links

Active Publication Date: 2020-06-05
JIANGSU SINOGRAM MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the existing technical problem that it is impossible to judge whether the gains of each channel are consistent, the present invention provides a method for quickly judging the gain state of the detector

Method used

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  • A Fast Judgment Method of Detector Gain State
  • A Fast Judgment Method of Detector Gain State
  • A Fast Judgment Method of Detector Gain State

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Embodiment Construction

[0035] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0036] As shown in 1, a method for quickly judging the detector gain state is provided in this embodiment, including the following steps:

[0037] Accumulate the energy spectrum of the events in the fixed position area of ​​the detector in the two-dimensional position image of the multi-channel input position-sensitive detector, and obtain the peak position of the luminescence energy spectrum corresponding to the position of the multi-channel detector;

[0038] Determine the equilibrium state of each pathway through the position of the energy peak of the energy spectrum;

[0039] If the energy spectrum peaks in each area of ​​the energy peak are closer, the gain of each signal is closer to balance.

[0040] The sensitive area refers to the fixed area on the tw...

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Abstract

The invention belongs to the technical field of sensors, and particularly relates to a quick judging method for the gain state of a detector. The quick judging method for the gain state of the detector comprises the steps that accumulation of energy spectrums is conducted on an event of a fixed position area of the detector of a two-dimensional position image of a multiplexed sensitive position detector to obtain the peak position of a light emitting energy spectrum corresponding to the position of the multiplexed sensor; balance states of all passages are determined through positions of energy peaks of the energy spectrums; the closer positions of the peaks of the energy spectrums of various areas of the energy peaks are, the more balanced the gain of signals of all paths is. After test data is collected, whether or not a photomultiplier of a PET detector is balanced can be judged, it is not necessary to retrieve data anew, the step of data analyzing and processing is omitted, and theefficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a method for quickly judging the gain state of a detector. Background technique [0002] For a complex detector array, when multiple photosensor channels are used, the gain balance state (that is, the consistent state) of each channel determines the overall performance of the detector. For example, a PET detector composed of four photomultiplier tubes, the output gain of the four photomultiplier tubes is balanced, the performance of the detector can be improved to the best state, and the key performances such as the effective count rate and time resolution of the entire PET system can be improved. [0003] Photoelectric sensors, such as photomultiplier tubes and SiPMs, have different photoelectric conversion efficiencies and signal amplification differences, resulting in different channel gains. Generally, the output gain balance of the channel can be ensured by adjusting the wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/17
CPCG01T1/17
Inventor 吴和宇吕绮雯
Owner JIANGSU SINOGRAM MEDICAL TECH CO LTD
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