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A processing method and device for stacking pulse signals

A pulse signal and stacking pulse technology, applied in the field of nuclear medicine, can solve problems such as image quality degradation, achieve the effects of reducing bit error rate, effective identification, and improving quality

Active Publication Date: 2017-03-29
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problem of image quality degradation caused by the inability to identify the accumulation of pulse signals within the energy threshold in the prior art, the present invention provides a processing method and device for the accumulation of pulse signals, which realizes more The identification of a wide range of accumulated pulse signals improves the image quality and facilitates doctors to diagnose diseases more accurately

Method used

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  • A processing method and device for stacking pulse signals
  • A processing method and device for stacking pulse signals

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Embodiment 1

[0073] see figure 1 , which is a flow chart of Embodiment 1 of a method for processing an accumulation pulse signal provided by the present invention.

[0074] The pulse accumulation processing method provided in this embodiment includes the following steps:

[0075] Step S101: Acquire a pulse signal.

[0076] The scintillation crystal array is composed of scintillation crystal units engraved with several light-splitting grooves of different depths. When the gamma photons are incident on the scintillation crystal array to excite visible light, the light-splitting groove or light guide splits the visible light according to a certain ratio. Each beam of photoelectrons is received by the corresponding photomultiplier tube, multiplied and accelerated by the photomultiplier tube, and forms its own current pulse signal output on the anode. We call this respective current pulse signal a sub-pulse signal. The sub-pulse signal is used to calculate the position coordinates of the scin...

Embodiment 2

[0101] The main difference between this embodiment and the method embodiment 1 is that: after the accumulation pulse signal is identified in the method embodiment 1, the accumulation pulse signal can be processed. This embodiment provides a method for processing the accumulation pulse signal. The method of processing.

[0102] see Figure 4 , which is a flow chart of Embodiment 2 of a method for processing an accumulation pulse signal provided by an embodiment of the present invention.

[0103] The processing method of the accumulation pulse signal provided in this embodiment includes the following steps:

[0104] Step S201: Obtain a pulse signal.

[0105] Step S202: Calculate the total energy value of the pulse signal.

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Abstract

The embodiment of the invention discloses a processing method for a pile-up pulse signal. The method includes the steps of obtaining the pulse signal, dividing the pulse signal into two sections, wherein the first section of the pulse signal is a pulse signal from the time when the pulse signal is generated to the time when the first voltage continuously drops to the peak value, the peak value is within the first preset range, and the second section of the pulse signal is the rest of the signal except the first pulse signal in the pulse signal; calculating the first energy value corresponding to the first section of the pulse signal and the second energy value corresponding to the second section of the pulse signal, and calculating the energy ratio which is the ratio of the first energy value to the second energy value; judging whether the energy ratio is within the first threshold value range or not; identifying the pulse signal to be the pile-up pulse signal if the energy ratio is within the first threshold value range. The embodiment of the invention further discloses a processing device for the pile-up pulse signal. The pile-up pulse signals can be more effectively identified, the error rate of a system is decreased, and the image quality is improved.

Description

technical field [0001] The invention relates to the field of nuclear medicine, in particular to a processing method and device for accumulation pulse signals. Background technique [0002] Nuclear medicine equipment is currently commonly used detection equipment in medicine, for example, single electron emission computed tomography (SPECT) equipment, positron emission computed tomography (PET) equipment, and the like. Nuclear medicine equipment can form an image of the distribution of drugs containing radionuclides in the body, which can reflect human metabolism, tissue function, and structural form. [0003] In nuclear medicine equipment, the core component is the nuclear detector, which is used to detect the radiation (such as gamma ray) emitted by the radionuclide introduced into the patient's body. Nuclear detectors are generally composed of scintillation crystal arrays, photomultiplier tubes and corresponding electronic instruments. The working process is: the interact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/02G06F19/00
Inventor 赵健李楠吴国城梁国栋韩东辉
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD